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Tell Us Your Car Faults. Let's Assess And Fix Them - Car Talk (210) - Nairaland

Nairaland Forum › Nairaland General › Car Talk › Tell Us Your Car Faults. Let's Assess And Fix Them (268608 Views)

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Re: Tell Us Your Car Faults. Let's Assess And Fix Them by czar2k16(m): 10:39am On Oct 15
Good Day good people, please I need your help 🙏🏾
My car sometimes makes a sudden grrr sound accompanied with slight vibrations.
This occurs intermittently & can happen at any speed but rarely at high speed.

I had it scanned, and i attached the result below.
The vehicle is a 2008 Toyota Camry.

I sorted out the ignition coil & Air Conditioning issue.

Thanks

Re: Tell Us Your Car Faults. Let's Assess And Fix Them by RyanAutomotive: 12:14pm On Oct 15
czar2k16:
Good Day good people, please I need your help 🙏🏾
My car sometimes makes a sudden grrr sound accompanied with slight vibrations.
This occurs intermittently & can happen at any speed but rarely at high speed.

I had it scanned, and i attached the result below.
The vehicle is a 2008 Toyota Camry.

I sorted out the ignition coil & Air Conditioning issue.

Thanks
Good afternoon sir.

Vehicle Details
Make: Toyota
Model: Camry
Year: 2008


Main Complaint: Intermittent grinding/“grrr” sound accompanied by slight vibrations, occurring at different speeds but rarely at high speed.

Diagnostic Report: Multiple fault codes recorded in the Engine/ECT, ABS/VSC/TRC and A/C systems.

I have reviewed the diagnostic report you shared. Since you have already attended to the ignition coil and air-conditioning issues, let’s concentrate on the intermittent grinding noise and the remaining fault codes before any further parts replacement.


1, Understanding the ABS/VSC/TRC Fault Codes

Your diagnostic report shows the following codes:

• C0200 — Front Speed Sensor RH Circuit

This indicates a fault involving the right-front wheel-speed sensor circuit.

• C0210 — Rear Speed Sensor RH Circuit

This indicates a fault involving the right-rear wheel-speed sensor circuit.

• C1333 — Open Circuit in Left Rear Speed Sensor Circuit

This indicates an open electrical circuit or an interruption in the left-rear wheel-speed sensor circuit.

• C1237 — Speed Sensor Rotor Faulty

This indicates a fault associated with the wheel-speed sensing signal or the sensor rotor/encoder system, depending on the vehicle’s configuration.

These codes deserve careful attention because the ABS, traction control and vehicle stability systems depend on reliable wheel-speed information.

Possible causes include:

* Damaged wheel-speed sensor wiring.
* Loose, corroded or damaged connectors.
* Faulty wheel-speed sensors.
* Damaged or contaminated sensor rotors or magnetic encoder rings.
* Incorrect sensor installation or excessive sensor-to-rotor clearance, where applicable.
* Wheel-bearing or hub problems affecting the encoder signal.

Important: The codes do not automatically mean that all the wheel-speed sensors need replacement. Multiple sensor-circuit codes may indicate separate faults, wiring damage or a shared electrical issue. Testing is required to establish the actual cause.


2. Could the ABS/Speed Sensor Faults Be Causing the Grinding Noise?

Possibly, but we should not assume that they are responsible for the noise without further inspection.

A damaged wheel bearing, hub or sensor rotor may sometimes produce noise while also affecting the wheel-speed signal. However, an electrical sensor fault alone would not normally explain a physical grinding sound.

The intermittent “grrr” sound and slight vibration could also originate from:

* A worn or damaged wheel bearing.
* A brake pad, brake disc or brake dust shield making contact.
* A damaged CV joint or driveshaft component.
* A loose suspension or underbody component.
* A tyre defect or foreign object contacting a rotating component.
* A drivetrain component developing an intermittent mechanical fault.

The priority is to identify exactly where the noise originates and determine whether it is related to wheel rotation, braking, acceleration or vehicle speed.


3, Understanding the Engine Fault Codes

Your report also shows:

• P0441 — Evaporative Emission Control System Incorrect Purge Flow (Pending)

This indicates that the engine computer has detected an unexpected purge-flow condition in the fuel-vapour emission control system.

Possible causes include a faulty purge valve, leaking or obstructed EVAP hoses, a vent-system issue or another fault affecting purge flow.

This code would not normally explain a grinding noise accompanied by vibration, so it should be investigated separately.

• P0352 — Ignition Coil “B” Primary/Secondary Circuit (Current and History)

This indicates a fault in the electrical circuit associated with ignition coil B.

Since you mentioned that you have already sorted out the ignition coil issue, the next step is to confirm whether P0352 has returned after the repair.

If it remains current, the coil, connector, wiring, power supply and control circuit should be checked. If it is only stored in history and the fault no longer returns, it may relate to the previous problem.


4, Understanding the A/C Fault Code

• B1423 — Open in Pressure Sensor Circuit / Abnormal Refrigerant Pressure

This code indicates an issue involving the A/C refrigerant-pressure sensing circuit or an abnormal pressure-related signal, depending on the system.

Possible causes include:

* A faulty refrigerant-pressure sensor.
* Damaged wiring or a poor connector connection.
* An electrical supply or ground issue.
* An actual refrigerant-pressure problem requiring further investigation.

Since you mentioned that you have already attended to the A/C issue, this code should be rechecked to determine whether it remains active.

Do not replace the pressure sensor simply because the code appears; the circuit and actual refrigerant pressure should be assessed first.


5, What Should Be Checked Now?

Before buying any additional parts, I recommend the following diagnostic procedure:

1, Locate the Grinding Noise

Carry out a careful road test, where safe, to establish whether the noise changes with vehicle speed, braking, acceleration or steering direction.

2, Inspect All Four Wheel Ends

Check the wheel bearings, hubs, brake discs, pads, dust shields and tyres for wear, looseness or physical contact.

3, Diagnose the ABS Wheel-Speed Circuits

Inspect the wiring and connectors associated with the right-front, right-rear and left-rear wheel-speed sensors.

4, Examine Live Wheel-Speed Data

Use a suitable diagnostic scanner to compare all four wheel-speed readings during controlled testing. An intermittent or inconsistent signal may help identify the affected circuit.

5, Inspect the Sensor Rotors and Encoder Rings

Check for damage, contamination, incorrect installation or faults in the magnetic encoder system, where fitted.

6,Recheck the Engine and A/C Codes

Confirm which codes remain current after the previous repairs and investigate any that return.


6, Do NOT Do This

* Do not replace all the ABS sensors simply because multiple codes are present.
* Do not assume the grinding noise is electrical without inspecting the mechanical components.
* Do not ignore a possible wheel-bearing or brake fault.
* Do not clear the codes and assume the problem has been resolved.
* Do not continue driving if the grinding becomes severe, the vehicle pulls unexpectedly, a wheel develops excessive play, or braking performance changes.

If the noise is coming from a wheel bearing, brake component or another rotating part, continued driving could worsen the damage.


7, Professional Insight

The most important concern here is the combination of an intermittent grinding noise, slight vibration and multiple ABS wheel-speed circuit faults.

These faults may be related if a wheel-end component, encoder or wiring is damaged, but they may also represent separate problems.

My recommendation is to investigate the grinding noise and wheel-speed sensor circuits first, while treating the P0441, P0352 and B1423 codes as separate diagnostic items unless testing establishes a connection.

This approach will help prevent unnecessary sensor replacement and ensure that a potentially safety-related mechanical fault is not overlooked.


8, Ryan Automotive Limited Recommendation

At Ryan Automotive Limited, we recommend a structured diagnosis that combines physical inspection with computerized testing.

Our assessment can include:

• Road-test diagnosis of the intermittent noise.
• Wheel bearing, hub and brake inspection.
• ABS/VSC/TRC fault diagnosis.
• Wheel-speed sensor circuit and live-data testing.
• Engine fault-code verification.
• A/C pressure-sensor circuit assessment.
• Identification of the root cause before repairs are recommended.

If you are in Lagos or can bring the vehicle down, you are welcome to visit Ryan Automotive Limited, along LASU–Isheri Road, for a professional assessment.

We diagnose the fault first and explain our findings before recommending repairs. Our goal is to identify the root cause, not simply replace parts until the symptoms disappear.

RYAN AUTOMOTIVE LIMITED
Precision • Transparency • Excellence.
Re: Tell Us Your Car Faults. Let's Assess And Fix Them by Talismann: 4:27pm On Oct 15
RyanAutomotive:
Good afternoon sir.

Vehicle Details
Make: Toyota
Model: Camry
Year: 2008


Main Complaint: Intermittent grinding/“grrr” sound accompanied by slight vibrations, occurring at different speeds but rarely at high speed.

Diagnostic Report: Multiple fault codes recorded in the Engine/ECT, ABS/VSC/TRC and A/C systems.

I have reviewed the diagnostic report you shared. Since you have already attended to the ignition coil and air-conditioning issues, let’s concentrate on the intermittent grinding noise and the remaining fault codes before any further parts replacement.


1, Understanding the ABS/VSC/TRC Fault Codes

Your diagnostic report shows the following codes:

• C0200 — Front Speed Sensor RH Circuit

This indicates a fault involving the right-front wheel-speed sensor circuit.

• C0210 — Rear Speed Sensor RH Circuit

This indicates a fault involving the right-rear wheel-speed sensor circuit.

• C1333 — Open Circuit in Left Rear Speed Sensor Circuit

This indicates an open electrical circuit or an interruption in the left-rear wheel-speed sensor circuit.

• C1237 — Speed Sensor Rotor Faulty

This indicates a fault associated with the wheel-speed sensing signal or the sensor rotor/encoder system, depending on the vehicle’s configuration.

These codes deserve careful attention because the ABS, traction control and vehicle stability systems depend on reliable wheel-speed information.

Possible causes include:

* Damaged wheel-speed sensor wiring.
* Loose, corroded or damaged connectors.
* Faulty wheel-speed sensors.
* Damaged or contaminated sensor rotors or magnetic encoder rings.
* Incorrect sensor installation or excessive sensor-to-rotor clearance, where applicable.
* Wheel-bearing or hub problems affecting the encoder signal.

Important: The codes do not automatically mean that all the wheel-speed sensors need replacement. Multiple sensor-circuit codes may indicate separate faults, wiring damage or a shared electrical issue. Testing is required to establish the actual cause.


2. Could the ABS/Speed Sensor Faults Be Causing the Grinding Noise?

Possibly, but we should not assume that they are responsible for the noise without further inspection.

A damaged wheel bearing, hub or sensor rotor may sometimes produce noise while also affecting the wheel-speed signal. However, an electrical sensor fault alone would not normally explain a physical grinding sound.

The intermittent “grrr” sound and slight vibration could also originate from:

* A worn or damaged wheel bearing.
* A brake pad, brake disc or brake dust shield making contact.
* A damaged CV joint or driveshaft component.
* A loose suspension or underbody component.
* A tyre defect or foreign object contacting a rotating component.
* A drivetrain component developing an intermittent mechanical fault.

The priority is to identify exactly where the noise originates and determine whether it is related to wheel rotation, braking, acceleration or vehicle speed.


3, Understanding the Engine Fault Codes

Your report also shows:

• P0441 — Evaporative Emission Control System Incorrect Purge Flow (Pending)

This indicates that the engine computer has detected an unexpected purge-flow condition in the fuel-vapour emission control system.

Possible causes include a faulty purge valve, leaking or obstructed EVAP hoses, a vent-system issue or another fault affecting purge flow.

This code would not normally explain a grinding noise accompanied by vibration, so it should be investigated separately.

• P0352 — Ignition Coil “B” Primary/Secondary Circuit (Current and History)

This indicates a fault in the electrical circuit associated with ignition coil B.

Since you mentioned that you have already sorted out the ignition coil issue, the next step is to confirm whether P0352 has returned after the repair.

If it remains current, the coil, connector, wiring, power supply and control circuit should be checked. If it is only stored in history and the fault no longer returns, it may relate to the previous problem.


4, Understanding the A/C Fault Code

• B1423 — Open in Pressure Sensor Circuit / Abnormal Refrigerant Pressure

This code indicates an issue involving the A/C refrigerant-pressure sensing circuit or an abnormal pressure-related signal, depending on the system.

Possible causes include:

* A faulty refrigerant-pressure sensor.
* Damaged wiring or a poor connector connection.
* An electrical supply or ground issue.
* An actual refrigerant-pressure problem requiring further investigation.

Since you mentioned that you have already attended to the A/C issue, this code should be rechecked to determine whether it remains active.

Do not replace the pressure sensor simply because the code appears; the circuit and actual refrigerant pressure should be assessed first.


5, What Should Be Checked Now?

Before buying any additional parts, I recommend the following diagnostic procedure:

1, Locate the Grinding Noise

Carry out a careful road test, where safe, to establish whether the noise changes with vehicle speed, braking, acceleration or steering direction.

2, Inspect All Four Wheel Ends

Check the wheel bearings, hubs, brake discs, pads, dust shields and tyres for wear, looseness or physical contact.

3, Diagnose the ABS Wheel-Speed Circuits

Inspect the wiring and connectors associated with the right-front, right-rear and left-rear wheel-speed sensors.

4, Examine Live Wheel-Speed Data

Use a suitable diagnostic scanner to compare all four wheel-speed readings during controlled testing. An intermittent or inconsistent signal may help identify the affected circuit.

5, Inspect the Sensor Rotors and Encoder Rings

Check for damage, contamination, incorrect installation or faults in the magnetic encoder system, where fitted.

6,Recheck the Engine and A/C Codes

Confirm which codes remain current after the previous repairs and investigate any that return.


6, Do NOT Do This

* Do not replace all the ABS sensors simply because multiple codes are present.
* Do not assume the grinding noise is electrical without inspecting the mechanical components.
* Do not ignore a possible wheel-bearing or brake fault.
* Do not clear the codes and assume the problem has been resolved.
* Do not continue driving if the grinding becomes severe, the vehicle pulls unexpectedly, a wheel develops excessive play, or braking performance changes.

If the noise is coming from a wheel bearing, brake component or another rotating part, continued driving could worsen the damage.


7, Professional Insight

The most important concern here is the combination of an intermittent grinding noise, slight vibration and multiple ABS wheel-speed circuit faults.

These faults may be related if a wheel-end component, encoder or wiring is damaged, but they may also represent separate problems.

My recommendation is to investigate the grinding noise and wheel-speed sensor circuits first, while treating the P0441, P0352 and B1423 codes as separate diagnostic items unless testing establishes a connection.

This approach will help prevent unnecessary sensor replacement and ensure that a potentially safety-related mechanical fault is not overlooked.


8, Ryan Automotive Limited Recommendation

At Ryan Automotive Limited, we recommend a structured diagnosis that combines physical inspection with computerized testing.

Our assessment can include:

• Road-test diagnosis of the intermittent noise.
• Wheel bearing, hub and brake inspection.
• ABS/VSC/TRC fault diagnosis.
• Wheel-speed sensor circuit and live-data testing.
• Engine fault-code verification.
• A/C pressure-sensor circuit assessment.
• Identification of the root cause before repairs are recommended.

If you are in Lagos or can bring the vehicle down, you are welcome to visit Ryan Automotive Limited, along LASU–Isheri Road, for a professional assessment.

We diagnose the fault first and explain our findings before recommending repairs. Our goal is to identify the root cause, not simply replace parts until the symptoms disappear.

RYAN AUTOMOTIVE LIMITED
Precision • Transparency • Excellence.
you just succeeded in making this thread which we all love become boring with all these unending AI slop. why not go create your own thread for that sole purpose?
Re: Tell Us Your Car Faults. Let's Assess And Fix Them by czar2k16(m): 6:10pm On Oct 15
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Re: Tell Us Your Car Faults. Let's Assess And Fix Them by cyif2003(m): 9:19am On Oct 16
Abeg all this new car batteries in d market no dey last 6months again. Who get tokumbo battery follow come for sale
Re: Tell Us Your Car Faults. Let's Assess And Fix Them by 3kay945(m): 9:44pm On Oct 16
czar2k16:
Good Day good people, please I need your help 🙏🏾
My car sometimes makes a sudden grrr sound accompanied with slight vibrations.
This occurs intermittently & can happen at any speed but rarely at high speed.

I had it scanned, and i attached the result below.
The vehicle is a 2008 Toyota Camry.

I sorted out the ignition coil & Air Conditioning issue.

Thanks
If I get your grr sound well and compare to the experience I had, I can suggest you check the ABS or speed sensor expecially at the rear wheels. There could be partial contact. You can disconnect the sensor and drive it.

I experience that when the two wires had contact. More pronounced when I wanted to move over a speed bumps.
Re: Tell Us Your Car Faults. Let's Assess And Fix Them by 3kay945(m): 9:45pm On Oct 16
cyif2003:
Abeg all this new car batteries in d market no dey last 6months again. Who get tokumbo battery follow come for sale
Have you tried RUNALL?
Re: Tell Us Your Car Faults. Let's Assess And Fix Them by Dynamicboss: 8:16am On Oct 17
ugreat:
You need to be banned from this place. You're constituting nuisance.
"Simply clearing the dashboard warning light without properly repairing the SRS system is unsafe and is not a professional solution. The airbag system is a critical safety feature and should be restored to factory operating condition" Where did he mention this? You're using AI irresponsibly. You don't even read what AI gives you.
Are you sure that character is not even an AI? He behaves stoic and robotic
Re: Tell Us Your Car Faults. Let's Assess And Fix Them by cyif2003(m): 12:05pm On Oct 20
na for aba dem dey make runal battery
3kay945:
Have you tried RUNALL?
Re: Tell Us Your Car Faults. Let's Assess And Fix Them by 3kay945(m): 12:13pm On Oct 20
cyif2003:
na for aba dem dey make runal battery
ehnn... if so, i guess Solite too is from Aba.
Cos, i left Solite for Runall and its lasted more than the Solite. in my own case though.

That is good niyen. grin
Re: Tell Us Your Car Faults. Let's Assess And Fix Them by cyif2003(m): 1:18pm On Oct 20
hmmm ok nice
3kay945:
ehnn... if so, i guess Solite too is from Aba.
Cos, i left Solite for Runall and its lasted more than the Solite. in my own case though.

That is good niyen. grin
Re: Tell Us Your Car Faults. Let's Assess And Fix Them by cyif2003(m): 2:18pm On Oct 20
i experience this too mne is anytime i want to accelerate from gear one
3kay945:
If I get your grr sound well and compare to the experience I had, I can suggest you check the ABS or speed sensor expecially at the rear wheels. There could be partial contact. You can disconnect the sensor and drive it.

I experience that when the two wires had contact. More pronounced when I wanted to move over a speed bumps.
Re: Tell Us Your Car Faults. Let's Assess And Fix Them by Seunisco: 5:58pm On Oct 20
Hi guys, thanks for everything.


My sister’s 04 corolla, the window/glass stopped winding up or down.

I was told it’s the engine of the side door.

Please how much is the engine or cost of repair?

Thank you
Re: Tell Us Your Car Faults. Let's Assess And Fix Them by flootintin: 7:31pm On Oct 20
I have power issue with my car. My battery rans down on motion and when I checked the alternator, it was working well. I notice that at night, my dashboard light is dim. Battery is just 3 months old. What could be the issue. Car is honda accord evil spirit.
Re: Tell Us Your Car Faults. Let's Assess And Fix Them by Nemesisobaara: 11:39pm On Oct 22
RyanAutomotive:
Your office location is far from me. I can’t take the car all the way. Please anyone close to Ago palace way to help me with this?

Good morning sir.

Vehicle: Lexus RX350
Concern: Infotainment/Bluetooth system was working before electrical work was carried out around the gear selector. Subsequently, the infotainment system was disconnected/rewired, an alternative radio connection and AUX setup were installed, and now the Bluetooth audio is distorted. The steering-wheel audio controls also no longer function.

Let’s address this carefully because the symptoms strongly suggest that the original infotainment wiring/configuration has been altered, and further cutting or joining wires may create additional problems.


• Understanding the Situation

There are actually two separate issues here:

1. Bluetooth Audio Is Distorted

Since the radio still works normally but music played through the modified Bluetooth/AUX arrangement sounds distorted, the problem could be related to:

• Incorrect AUX/audio signal connection.
• Poor-quality or damaged AUX interface.
• Incorrect grounding.
• Incorrect audio input/output connection.
• Damaged connector or wiring.
• An aftermarket interface that is not compatible with the factory infotainment system.
• The original factory Bluetooth/audio module no longer communicating correctly.

Simply connecting an AUX cable to another radio system does not necessarily restore the factory audio architecture.


2. Steering-Wheel Audio Controls No Longer Work

This is particularly important.

The steering-wheel controls communicate with the vehicle’s infotainment system through the factory wiring/network.

If a connector or branch cable was removed and the system was then connected differently, it can cause:

• Loss of steering-wheel volume control.
• Loss of track/station controls.
• Loss of audio control communication.
• Communication errors between the infotainment system and other vehicle modules.

So your suspicion that the modification may be related to the steering controls is reasonable, but it should be confirmed rather than assumed.



• Important Observation

I would strongly advise against allowing another technician to simply cut more wires or install another aftermarket radio.

The fact that the system originally worked and the problem appeared after the gear-selector/infotainment wiring was disturbed is an important diagnostic clue.

The correct approach is to determine:

What was originally connected → what was removed → what was modified → what is currently connected.

That is much better than continuing to modify the system blindly.



• What Should Be Checked Now

A professional technician should first:

1. Inspect the entire infotainment wiring and connectors.

2. Identify the cable that was removed and determine its original factory function.

3. Verify all factory connectors behind the infotainment unit.

4. Check for:

• Bent or damaged pins.
• Loose connectors.
• Broken wires.
• Incorrectly joined wires.
• Poor grounds.
• Non-factory connections.

5. Perform a computerized scan of the relevant vehicle modules to check for communication faults.

6. Test the factory infotainment system before reconnecting any aftermarket AUX equipment.

7. Verify the steering-wheel audio-control communication.

8. Restore the factory wiring configuration wherever possible.

9. Test the original Bluetooth system again before considering replacement of the head unit or other expensive components.


• Do NOT Do This

• Do NOT allow anyone to keep cutting the factory wiring to make the system work.

• Do NOT replace the entire infotainment system before checking the wiring and communication network.

• Do NOT assume the radio itself is bad simply because Bluetooth audio is distorted.

• Do NOT continue adding AUX adapters and other components until the original wiring has been properly assessed.

Most importantly, don’t let anyone randomly reconnect those cables based on colour alone. Factory wiring should be identified using the correct wiring diagram and circuit testing.


• Professional Insight

From the sequence you’ve described, I would first investigate the electrical/wiring modification and factory infotainment communication, rather than immediately condemning the infotainment unit.

The radio working while Bluetooth is distorted and the steering-wheel controls have simultaneously stopped working gives us useful information.

It is possible that there is more than one issue, but the timing of the problem—after the infotainment/gear-selector area was dismantled and rewired—means that the previous work needs to be carefully reviewed.

Also, because the vehicle has already had multiple modifications, the first objective should be to restore and verify the original factory connections before introducing another solution.


• Ryan Automotive Limited Recommendation

If you’re in Lagos or can bring the RX350 down, Ryan Automotive Limited can properly assess the electrical and infotainment system.

Our approach would be:

1. Computerized diagnostic scan
2. Physical inspection of the infotainment wiring
3. Factory connector and circuit verification
4. Steering-wheel control testing
5. Bluetooth/audio system testing
6. Identification of previous modifications
7. Restoration of the correct factory connections where possible

If we discover a damaged cable, connector, module, or infotainment component, we’ll explain exactly what has been found and provide the repair options before any additional work is carried out.

The objective is not simply to make the music play—we want to restore the system correctly and determine why the factory controls stopped working in the first place.

You’re welcome to bring the RX350 to Ryan Automotive Limited, Lagos, for a structured diagnosis.

Ryan Automotive Limited
Precision • Transparency • Excellence
Re: Tell Us Your Car Faults. Let's Assess And Fix Them by czar2k16(m): 3:37pm On Oct 23
My Vehicle’s door lock remote controlnis misbehahing.

My rewire diagnosed the vehicles door control reciever as the culprit.

Hes charging me N40k total cost for replacement.
Im of the opinion the price is a bit high, or ami I wrong?

Vehicle ia a 2008 Toyota Camry.
Location Lagos - Abule Egba
Picture of the faulty device is attached.

Re: Tell Us Your Car Faults. Let's Assess And Fix Them by kingreign(op): 8:21pm On Oct 24
czar2k16:
My Vehicle’s door lock remote controlnis misbehahing.

My rewire diagnosed the vehicles door control reciever as the culprit.

Hes charging me N40k total cost for replacement.
Im of the opinion the price is a bit high, or ami I wrong?

Vehicle ia a 2008 Toyota Camry.
Location Lagos - Abule Egba
Picture of the faulty device is attached.
If you have this opinion, why not engage someone else who you have trust in and that that can do it at your own desired price. Rather than resort to dealing with someone you do not trust?
Re: Tell Us Your Car Faults. Let's Assess And Fix Them by EdihA: 2:13am On Oct 25
Please my 2014 Corolla cvt gearbox that was replaced earlier this year is seriously leaking oil. Tried to patch it with different types of gums but still leakage always finds a way to come out. The vehicle also struggles to move when the car has heated up. Any time I try to accelerate during stop and go traffic or climbing a hill, it will be dragging and struggling to accelerate as if I'm towing a train behind me. Any reliable gearbox specialist here especially in port harcourt area?
Re: Tell Us Your Car Faults. Let's Assess And Fix Them by RyanAutomotive: 6:12am On Oct 25
EdihA:
Please my 2014 Corolla cvt gearbox that was replaced earlier this year is seriously leaking oil. Tried to patch it with different types of gums but still leakage always finds a way to come out. The vehicle also struggles to move when the car has heated up. Any time I try to accelerate during stop and go traffic or climbing a hill, it will be dragging and struggling to accelerate as if I'm towing a train behind me. Any reliable gearbox specialist here especially in port harcourt area?
Good morning sir.

Vehicle Details
Make: Toyota
Model: Corolla
Year: 2014
Transmission: CVT (Continuously Variable Transmission)

Complaints:

1. Severe transmission fluid leakage despite repeated attempts to seal it with different types of gum.
2. Poor acceleration and difficulty moving when the vehicle becomes hot, particularly in stop-and-go traffic and when climbing hills.
3. The gearbox was replaced earlier this year, but the problems have persisted.

Sir, these symptoms require urgent attention. I would strongly advise against applying more sealants or continuing to drive the vehicle under these conditions before the actual cause is established.



1, Why Does the CVT Gearbox Keep Leaking Oil?

Since you have tried different sealants without success, the first step is to identify the exact point of leakage.

Possible causes include:

• A damaged or incorrectly installed transmission oil seal.
• Leakage from the transmission pan or its gasket, where applicable.
• A damaged transmission casing or sealing surface.
• A loose, damaged or improperly sealed transmission connection.
• Leakage from the axle seals, cooler lines or related fittings.
• Incorrect installation or damage sustained during the previous gearbox replacement.

Important: If the leakage is coming from a seal, joint or damaged casing, applying gum externally may not provide a reliable repair. The correct repair depends on the actual source of the leak.

⸻

2, Why Does the Vehicle Struggle When Hot?

This is the more concerning symptom.

You explained that the vehicle struggles to accelerate after heating up, particularly in traffic or when climbing hills.

Possible causes include:

A. Low CVT Fluid Level

If the transmission is losing fluid, the level may fall below the manufacturer’s specified range. This can interfere with the transmission’s ability to operate correctly and may contribute to poor acceleration or loss of drive.

B. CVT Overheating

Stop-and-go traffic and uphill driving can increase transmission operating demands. If the CVT is overheating, it may reduce performance or enter a protective operating mode, depending on the vehicle’s control strategy.

C. Incorrect or Unsuitable CVT Fluid

The 2014 Corolla requires the correct fluid specification for its particular transmission. Incorrect fluid or an improperly established fluid level can affect transmission operation.

D. Internal CVT Problems

If the fluid level and specification are correct but the problem persists, possible causes include hydraulic pressure problems, a malfunctioning valve body or solenoid, pump-related issues, or internal belt-and-pulley wear.

E. Installation-Related Problems

Since the gearbox was replaced earlier this year, the installation, fluid specification, cooler connections, seals and compatibility of the replacement unit should also be verified.


3, Important Observation

The combination of severe fluid leakage and poor acceleration when hot is a serious warning sign.

If the transmission fluid level is low, continuing to drive can cause further damage. If the CVT is overheating or experiencing internal slipping, repeated acceleration under heavy load may make the problem worse.

We should not automatically conclude that the replacement gearbox is damaged beyond repair. However, the unit and its installation need to be assessed properly.

4, What Should Be Checked Now?

Before spending more money, I recommend the following diagnostic procedure:

1, Locate the Exact Leakage Point

Clean the affected area and trace the leak to its source. Inspect the seals, casing, pan or gasket where applicable, cooler lines and connections.

2, Verify the CVT Fluid Level

Check the fluid using the manufacturer’s specified procedure and temperature conditions. Do not simply pour in additional fluid without establishing the correct level.

3, Confirm the Correct Fluid Specification

Verify the exact transmission variant and the fluid specification required for that unit.

4, Scan the Engine and Transmission Systems

Retrieve relevant fault codes and monitor available live data, including transmission temperature and pressure-related parameters where supported.

5, Investigate the Hot-Running Symptoms

Determine whether the vehicle is experiencing overheating, inadequate hydraulic pressure, internal slipping or an engine performance problem.

6, Inspect the Previous Installation

Check whether the replacement gearbox is compatible and whether the installation, sealing surfaces, fluid connections and related components are correct.

7, Perform Further Transmission Tests if Necessary

If the initial checks point to an internal fault, conduct the appropriate manufacturer-guided tests before deciding whether the gearbox needs repair or replacement.


5, Do NOT Do This

• Do not continue applying different types of gum or sealant without identifying the leak.

• Do not continue driving with a significant transmission fluid leak.

• Do not keep accelerating hard uphill or in traffic while the vehicle is struggling.

• Do not use arbitrary transmission additives to mask the symptoms.

• Do not agree to another gearbox replacement until the leakage source, fluid condition and cause of the poor acceleration have been investigated.

My advice: If the leak is severe or the vehicle is struggling to move, stop driving it and arrange recovery to a qualified workshop. This may help prevent further transmission damage.


6, Professional Insight

Because the CVT gearbox was replaced earlier this year, I would pay particular attention to the quality of the installation, the source of the leak, the correct fluid level and specification, and the transmission’s behaviour once hot.

The leakage and poor acceleration may be connected, especially if fluid loss has affected the transmission’s operation. However, the possibility of overheating, hydraulic faults or internal damage must also be investigated.

The priority is to stop the fluid loss, establish the correct fluid level and determine why the CVT struggles when hot before authorizing major repairs.


7, Ryan Automotive Limited Recommendation

At Ryan Automotive Limited, we recommend a systematic diagnosis rather than repeated sealing attempts or replacing parts through guesswork.

Our assessment can include:

• Transmission leakage inspection.
• CVT fluid level and specification verification.
• Computerized engine and transmission diagnostics.
• Transmission temperature and live-data assessment.
• Inspection of the previous gearbox installation.
• Further testing to determine whether the problem is external, hydraulic or internal.

We are based along LASU–Isheri Road, Lagos. Since you mentioned Port Harcourt, please note that our workshop is in Lagos, so you would need to consider the cost and safety of transporting the vehicle before arranging an assessment with us.

If recovery or transport to Lagos is impractical, I recommend finding a qualified CVT specialist in Port Harcourt who can perform these checks before recommending another gearbox.

RYAN AUTOMOTIVE LIMITED
Precision • Transparency • Excellence.
Re: Tell Us Your Car Faults. Let's Assess And Fix Them by conqueror221: 7:07am On Oct 25
Please how much is this brain box? And where can I get the original one at a fair price?

It's for Corolla 2010. My location is Enugu state.

Thank you.

Re: Tell Us Your Car Faults. Let's Assess And Fix Them by freeman500: 8:11am On Oct 28
flootintin:
I have power issue with my car. My battery rans down on motion and when I checked the alternator, it was working well. I notice that at night, my dashboard light is dim. Battery is just 3 months old. What could be the issue. Car is honda accord evil spirit.
If you have a multimeter check the voltage when the car is on. If it's not up to 13.8v then it's not charging well, and can run your battery down. I've experienced such in my Camry. No battery light, but battery runs down overnight.
Re: Tell Us Your Car Faults. Let's Assess And Fix Them by shamoni85: 9:00am On Oct 31
My 2012 Kia Cerato consumes a lot of fuel ever since it was bought in 2013, brand new as in, am the first owner straight from the factory. Catalyst is intact, exhaust is fine.
What could be the problem abi na follow come error?
Re: Tell Us Your Car Faults. Let's Assess And Fix Them by RyanAutomotive: 12:50pm On Oct 31
shamoni85:
My 2012 Kia Cerato consumes a lot of fuel ever since it was bought in 2013, brand new as in, am the first owner straight from the factory. Catalyst is intact, exhaust is fine.
What could be the problem abi na follow come error?
Good afternoon sir.

Vehicle Details
Make: Kia
Model: Cerato
Year: 2012
Ownership: First owner, purchased brand new in 2013.

Main Complaint: Persistently high fuel consumption since the vehicle was purchased.

You also mentioned that the catalytic converter is intact and the exhaust system is in good condition.

Sir, I would not immediately conclude that this is a factory error or a problem that came with the vehicle. Since the fuel consumption has been unusually high from the beginning, we need to establish whether it is related to the engine’s fuel-management system, vehicle operating conditions or a possible mechanical issue.

Let’s examine the possibilities.



1, Possible Causes of Excessive Fuel Consumption

Several components and operating conditions can cause a vehicle to consume more fuel than expected.

A. Oxygen Sensor (O2 Sensor)

The oxygen sensor monitors the oxygen content in the exhaust and helps the engine computer regulate the air-fuel mixture.

If the sensor provides inaccurate readings, the engine may deliver more fuel than necessary.

B. Engine Coolant Temperature Sensor

This sensor tells the engine computer how hot the engine is.

If it incorrectly reports that the engine is colder than it actually is, the computer may continue supplying additional fuel, potentially increasing consumption.

C. Mass Airflow or MAP Sensor

Depending on the engine configuration, the airflow or manifold pressure sensor helps calculate the amount of air entering the engine.

Incorrect readings can affect fuel delivery and cause excessive consumption.

D. Fuel Injectors

Leaking, dirty or poorly atomizing injectors can interfere with proper fuel delivery.

An injector that does not close properly may also allow excess fuel into the engine.

E. Thermostat

If the thermostat remains open or the engine consistently operates below its intended temperature, fuel consumption may increase because the engine management system may remain in a warm-up strategy longer than necessary.

F. Ignition System

Worn spark plugs, weak ignition coils or incomplete combustion can reduce engine efficiency and increase fuel consumption.

G. Fuel Pressure Regulation

Excessive fuel pressure or a faulty fuel-pressure control system can cause more fuel to enter the engine than required.


2, Important Observation

You mentioned that the vehicle has consumed excessive fuel since it was purchased brand new in 2013.

That is an important detail.

If the problem has genuinely existed throughout the vehicle’s ownership, we should investigate whether:

* The vehicle has always been operating outside its expected fuel-consumption range.
* The engine has an incorrect sensor reading or calibration issue.
* The driving conditions are contributing significantly to consumption.
* The engine is operating correctly but the owner’s expectations differ from the vehicle’s actual fuel economy.

Also, having an intact catalytic converter and exhaust system does not automatically mean that the engine’s fuel-management system is functioning correctly.

⸻

3, What Should Be Checked Now?

Before replacing any components, I recommend the following:

1. Computerized Diagnostic Scan

Scan the engine control system for current, pending and stored fault codes.

2. Fuel Trim Analysis

Examine Short-Term Fuel Trim (STFT) and Long-Term Fuel Trim (LTFT) to determine whether the engine computer is adding or removing fuel to correct the air-fuel mixture.

3. Oxygen Sensor Assessment

Check oxygen sensor readings and response using live data.

4. Engine Temperature Verification

Compare the coolant temperature sensor reading with the actual engine temperature and verify that the thermostat operates correctly.

5. Airflow and Intake System Inspection

Check the MAF/MAP sensor, air filter, intake system and possible vacuum leaks, depending on the engine configuration.

6. Fuel System Inspection

Check fuel pressure, injector operation and possible injector leakage.

7. Ignition System Assessment

Inspect spark plugs, ignition coils and combustion performance.


4. Do NOT Do This

• Do not replace oxygen sensors simply because someone suspects them.

• Do not change injectors without testing their operation.

• Do not remove the catalytic converter in an attempt to reduce fuel consumption.

• Do not start replacing multiple sensors through trial and error.

• Do not assume the vehicle has a factory defect without comparing its actual fuel consumption against the manufacturer’s specifications.

The goal is to identify why the engine is consuming more fuel than expected.


5. Professional Insight

A 2012 Kia Cerato should not automatically be considered fuel-hungry simply because it has been consuming more fuel than expected.

The fact that the problem has existed since the vehicle was purchased makes a proper fuel-management and engine-performance assessment particularly important.

My recommendation is to establish the actual fuel consumption first, then compare the engine’s live data against the manufacturer’s specifications.

We need to diagnose the reason for the excessive consumption rather than assume it is a factory error.


6. Ryan Automotive Limited Recommendation

At Ryan Automotive Limited, we recommend a structured engine-performance and fuel-consumption diagnosis.

Our assessment can include:

• Computerized engine diagnostics.
• Fuel trim and oxygen sensor analysis.
• MAF/MAP sensor assessment.
• Engine temperature and thermostat checks.
• Fuel pressure and injector testing.
• Ignition and combustion inspection.
• Identification of the root cause before recommending repairs.

If you are in Lagos or can bring the vehicle down, you are welcome to visit Ryan Automotive Limited, along LASU–Isheri Road, for a professional assessment.

• Kindly provide these additional details:

1. Is your Cerato the 1.6L or 2.0L engine?
2. Is it automatic or manual?
3. Approximately how many litres of petrol does it consume per 100km, or how much fuel does it consume over a known distance?
4. Is the high consumption worse in traffic, on the highway or both?
5. Does the check-engine light come on?

These details will help us narrow down the possible causes.

RYAN AUTOMOTIVE LIMITED
Precision • Transparency • Excellence.
Re: Tell Us Your Car Faults. Let's Assess And Fix Them by Akinetdave: 11:49pm On Oct 31
Good day house. please my Toyota camry oil seal was bad and I try to get it fixed while trying to do that we realised the converter was the issue..that no matter the times I fixed the oil seal, it will still leak oil as long as the converter is bad. So I decided to change everything once but the problem now is that, after the engine and the gear has been installed back the car work has not been complete. it started shaking whenever I start it, doing slow on hills and even turn off sometimes. I told the mechanic what happened and what he said was that I should drive it very well that it will stop but it's draining a lot of fuel and I have consulted another mechanic and after working and changing the injector nuzzles and coils but it's still d same thing..
Re: Tell Us Your Car Faults. Let's Assess And Fix Them by RyanAutomotive: 6:46am On Nov 01
Akinetdave:
Good day house. please my Toyota camry oil seal was bad and I try to get it fixed while trying to do that we realised the converter was the issue..that no matter the times I fixed the oil seal, it will still leak oil as long as the converter is bad. So I decided to change everything once but the problem now is that, after the engine and the gear has been installed back the car work has not been complete. it started shaking whenever I start it, doing slow on hills and even turn off sometimes. I told the mechanic what happened and what he said was that I should drive it very well that it will stop but it's draining a lot of fuel and I have consulted another mechanic and after working and changing the injector nuzzles and coils but it's still d same thing..
Google Ryan Automotive Limited
Re: Tell Us Your Car Faults. Let's Assess And Fix Them by Abbeyismo(m): 7:18am
Akinetdave:
Good day house. please my Toyota camry oil seal was bad and I try to get it fixed while trying to do that we realised the converter was the issue..that no matter the times I fixed the oil seal, it will still leak oil as long as the converter is bad. So I decided to change everything once but the problem now is that, after the engine and the gear has been installed back the car work has not been complete. it started shaking whenever I start it, doing slow on hills and even turn off sometimes. I told the mechanic what happened and what he said was that I should drive it very well that it will stop but it's draining a lot of fuel and I have consulted another mechanic and after working and changing the injector nuzzles and coils but it's still d same thing..
Scan the car for error codes. Drop scan result
Get a good technician to check the transmission for you.
Where's the car located
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