₦airaland Forum

Ktaophyc:
It's important you first recall that Fuel prices have increased and thus consumption comparison is best done wrt liters of fuel bought and not the amount.

A few components to be checked during Diagnostics are:
1. O2 sensors
2. Exhaust leak
3. Misfire
4. Blocked inlet
5. Blocked exhaust

please help me shed more lights on number 3 and 4

Hello folk. my rx400h makes this noise every morning or mostly after 24 hours of sitting idle. What could be happening? Thanks.


https://www.youtube.com/watch?v=fCupMrDaGi8

Engine knocked or cracked spark plugs.starved oil or failed oil pump

AfDapone:
Hello folk. my rx400h makes this noise every morning or mostly after 24 hours of sitting idle. What could be happening? Thanks.


https://www.youtube.com/watch?v=fCupMrDaGi8

AfDapone:
Hello folk. my rx400h makes this noise every morning or mostly after 24 hours of sitting idle. What could be happening? Thanks.


https://www.youtube.com/watch?v=fCupMrDaGi8

Camshaft vvt actuators going out
Due to its failure it rattles upon start up but then dies down when oil circulates through the actuators. You should also have fault codes pointing to them also

2cribz:
Engine knocked or cracked spark plugs.starved oil or failed oil pump

Louiscars:
Camshaft vvt actuators going out
Due to its failure it rattles upon start up but then dies down when oil circulates through the actuators. You should also have fault codes pointing to them also

Thanks a lot. At least I have fore knowledge and I'll know how to go about it with mechanic.

Don rush and start explaining things. Forst tel him to loose all the plugs nd check for cracks on the ceramic or if the pkugs have expired or worn out. If pkuga are good..ruled out. Next tell him to guage the oil or you remove the dipstick?clean and insert then reove and check for imtbe level if its low or guaged. Thirdly he ahoyld check if the oil pump and oil pump mesh filter screen under the oil sump is blocked or dirty.... if after that he should check the timing belts?pulleys,adjuster where the fan belt sits on timing chain..if after every ..then the engine don knock be that. Some of these meko dey place one or half inch screw Inside your engine crankcase when you are not there. It will now hook the pistons or valves and bend them and hence engine knocked. He ahud check where I told u too. Don't go there and be doing big man o . Make sure u r there.mke no be say na spark plugs.them go tell u say engine don knock.cos every meko eyes dey red now and dem go chop anyone.

AfDapone:
Thanks a lot. At least I have fore knowledge and I'll know how to go about it with mechanic.

2cribz:
Don rush and start explaining things. Forst tel him to loose all the plugs nd check for cracks on the ceramic or if the pkugs have expired or worn out. If pkuga are good..ruled out. Next tell him to guage the oil or you remove the dipstick?clean and insert then reove and check for imtbe level if its low or guaged. Thirdly he ahoyld check if the oil pump and oil pump mesh filter screen under the oil sump is blocked or dirty.... if after that he should check the timing belts?pulleys,adjuster where the fan belt sits on timing chain..if after every ..then the engine don knock be that. Some of these meko dey place one or half inch screw Inside your engine crankcase when you are not there. It will now hook the pistons or valves and bend them and hence engine knocked. He ahud check where I told u too. Don't go there and be doing big man o . Make sure u r there.mke no be say na spark plugs.them go tell u say engine don knock.cos every meko eyes dey red now and dem go chop anyone.

😂 2cribz baba so amazing when reeling out details

2cribz:
Don rush and start explaining things. Forst tel him to loose all the plugs nd check for cracks on the ceramic or if the pkugs have expired or worn out. If pkuga are good..ruled out. Next tell him to guage the oil or you remove the dipstick?clean and insert then reove and check for imtbe level if its low or guaged. Thirdly he ahoyld check if the oil pump and oil pump mesh filter screen under the oil sump is blocked or dirty.... if after that he should check the timing belts?pulleys,adjuster where the fan belt sits on timing chain..if after every ..then the engine don knock be that. Some of these meko dey place one or half inch screw Inside your engine crankcase when you are not there. It will now hook the pistons or valves and bend them and hence engine knocked. He ahud check where I told u too. Don't go there and be doing big man o . Make sure u r there.mke no be say na spark plugs.them go tell u say engine don knock.cos every meko eyes dey red now and dem go chop anyone.

This is very misleading

Topmaike007:
please help me shed more lights on number 3 and 4

Misfire mwans there's a cylinder not working well. The main cause of blocked inlet is the clogged Air filter.

AfDapone:
Hello folk. my rx400h makes this noise every morning or mostly after 24 hours of sitting idle. What could be happening? Thanks.


https://www.youtube.com/watch?v=fCupMrDaGi8

Yours is an Hybrid Vehicle. The main issue here is the Camshaft grinding due to slow oil supply to thetop cylinder. An important advice is to first ensure you're handing your car over to a Mechanic that understands that your vehicle is an Hybrid. Once you are with a professional, step back and let him do the job.

Dictating what to do to a technician even if not a Service Professional don't usually pay off and becomes more costly.

Ktaophyc:
Misfire mwans there's a cylinder not working well. The main cause of blocked inlet is the clogged Air filter.

thank you bro

The steering oil in our rav4 started leaking uncontrollably. What is the solution?

WhizdomXX:
The steering oil in our rav4 started leaking uncontrollably. What is the solution?

Stop the leaks na. Trace the point(s) of leaks, change the damaged pipes or components and fill up with fresh Dextron 2 or 3

Guys, I need help. My RX350 2013 does no longer detect my key fob. It started last night. I also observed that my driver's seat exit system stopped working (steering doesn't go in or out and seat doesn't slide front or back when I start or switch off the car. This also started yesterday after I replaced all the fuses in the car to new ones. Please what may be wrong with it? Your advise will be appreciated 🙏. Thank you.

Kindly note: the steering tilts up and down and goes in and out when operated from the knob on the steering system. The seat also moves in and out when prompted by its buttons.

Profesoh:
Guys, I need help. My RX350 2013 does no longer detect my key fob. It started last night. I also observed that my driver's seat exit system stopped working (steering doesn't go in or out and seat doesn't slide front or back when I start or switch off the car. This also started yesterday after I replaced all the fuses in the car to new ones. Please what may be wrong with it? Your advise will be appreciated 🙏. Thank you.

Kindly note: the steering tilts up and down and goes in and out when operated from the knob on the steering system. The seat also moves in and out when prompted by its buttons.

What prompted you to replace all the fuses?

I replaced the fuses because many of them had wires wrapped around them. So, I said rather than manage, let's replace and we bought four packs

Thank you so much my brother. We took the car for recalibration and Tcm reset and the tranny is very fine now. I'm just seeing your detailed response. God bless you and thank you for the good job that you're doing here.

RyanAutomotive:
Good morning sir.

Thank you for the detailed explanation. Transmission issues like this require a very careful and structured diagnostic approach, especially on modern Lexus vehicles. Let’s examine the situation properly before any expensive components like the TCM are replaced.

⸻

🔎 Professional Diagnostic Insight

Vehicle: Lexus RX350 2013
Initial Fault Code: P0715 – Input/Turbine Speed Sensor “A” Circuit

This sensor monitors the speed of the transmission input shaft and sends that information to the Transmission Control Module (TCM) so the system can determine:

• Correct gear engagement
• Shift timing
• Torque converter operation
• Hydraulic pressure control

When the sensor fails or sends incorrect data, the transmission may:

• Get stuck in a specific gear
• Shift erratically
• Enter a protective fail-safe mode

Replacing the sensor was the correct first step, and the fact that the vehicle now selects all six gears again indicates that the original fault was likely addressed.

However, the remaining slip between gear 1 and 2 suggests there may still be an underlying issue.

⸻

1️⃣ Residual Adaptation / Calibration Issue

After replacing certain transmission components or sensors, the transmission computer may still retain old adaptive learning values.

These stored values affect:

• Shift pressure
• Clutch engagement timing
• Gear transition behavior

If they are not properly reset using a professional diagnostic scanner, the transmission may continue to behave incorrectly.

A proper TCM adaptive reset and relearn procedure is sometimes required.

⸻

2️⃣ Valve Body or Solenoid Performance

If the slipping occurs only between gear 1 and 2, this may indicate a hydraulic control issue within the valve body assembly.

Possible causes include:

• Weak or sticking shift solenoid
• Hydraulic pressure imbalance
• Internal valve body wear

These issues may not always trigger fault codes, especially if the system still manages to complete the shift.

⸻

3️⃣ Transmission Fluid Condition

Transmission slipping can also occur when:

• Fluid is degraded or burnt
• Incorrect fluid type is used
• Fluid level is not correctly set at operating temperature

The RX350 transmission is very sensitive to fluid condition, and improper servicing can affect gear engagement.

⸻

4️⃣ TCM Replacement Consideration

Replacing the Transmission Control Module (TCM) should always be the last step, not the first.

In practice, TCM failure on this model is much less common than:

• Valve body issues
• Solenoid performance problems
• Fluid pressure imbalance
• Incomplete adaptation reset

Therefore, replacing the TCM without confirming these areas can lead to unnecessary expense without solving the problem.

⸻

⚠️ Important Observation

The absence of fault codes does not always mean the transmission is perfectly healthy.

Many hydraulic or mechanical issues occur without immediately triggering diagnostic codes, especially when the system still manages to shift through the gears.

⸻

📌 What Should Be Checked Next

Before considering TCM replacement, the following should be done:

1️⃣ Perform a complete transmission live-data analysis
2️⃣ Verify transmission fluid condition and level
3️⃣ Perform a proper TCM adaptive reset and relearn procedure
4️⃣ Test shift solenoid response and hydraulic pressure behavior
5️⃣ Inspect the valve body assembly if slipping persists

This approach ensures the exact cause is identified rather than replacing parts based on assumption.

⸻

🎯 Professional Take

From experience with Lexus RX transmissions, slipping between 1st and 2nd gear after sensor replacement is more commonly related to adaptation or valve body control, not the TCM itself.

Proper diagnostic testing will determine whether the issue is electronic calibration or hydraulic control.

Addressing it early helps prevent further internal clutch wear.

⸻

🏢 Ryan Automotive Limited Recommendation

At this stage, the vehicle should undergo structured transmission diagnostics, including live data analysis and adaptive system reset, before any major component replacement.

This ensures the exact source of the slipping is identified and resolved correctly.

If you are able to bring the vehicle down, Ryan Automotive Limited performs professional transmission diagnostics and fault isolation to accurately determine whether the issue lies with calibration, solenoids, or internal hydraulic control.

This avoids unnecessary replacement of expensive components like the TCM.

⸻

Precision • Transparency • Excellence

Ryan Automotive Limited
Transmission Diagnostics | Fault Code Analysis | Professional Repair Approach 🚗🔧

Profesoh:
Thank you so much my brother. We took the car for recalibration and Tcm reset and the tranny is very fine now. I'm just seeing your detailed response. God bless you and thank you for the good job that you're doing here.

You are welcome sir

Please is there any car audio expert recommendations here?

I'm searching for a JBL amplifier for 2016 Avalon

I bought a direct Belgium 1zz engine about a week plus now, I discovered that my car vibrates when parked and when moving slowly. I have changed all the engine seats, I have changed throttle, I have check the exhaust, I even changed the plugs but it's still vibrating.. what could be the cause.
It doesn't vibrate when I am speeding. It only does when I am idle(parked) or driving slowly.

CLIQBOY:
Please is there any car audio expert recommendations here?

I'm searching for a JBL amplifier for 2016 Avalon

If you’re in Lagos, I could refer you to a lady in Ladipo she’ll help you get it

The electrical faults on this Mercedes GLE350 are so funny. Front SAM or Rear SAM? Actually the Rear SAM was the problem. Once changed all is now ok..

Good morning house

I'm new here

Kindly advise on what I can do 🙏
My big daddy Camry is showing check engine light and after scanning the attached error are seen

What does it mean and how can I fix it ?

Note that it's my first car and I bought it as Nigeria used some months ago.

Jesustheking:
Good morning house

I'm new here

Kindly advise on what I can do 🙏
My big daddy Camry is showing check engine light and after scanning the attached error are seen

What does it mean and how can I fix it ?

Note that it's my first car and I bought it as Nigeria used some months ago.

A flashing check engine light on a high-mileage Toyota Camry often indicates a severe cylinder misfire, possibly accompanied by a "system too lean" code or a faulty catalytic converter. This requires immediate attention to prevent engine damage or catalytic converter failure.

Jesustheking:
Good morning house

I'm new here

Kindly advise on what I can do 🙏
My big daddy Camry is showing check engine light and after scanning the attached error are seen

What does it mean and how can I fix it ?

Note that it's my first car and I bought it as Nigeria used some months ago.

Check if the fuse for the AF and O2 sensors are intact, if they are intact and hasn't blown up, replace the sensors.

Thanks for your contribution boss🙏

Meanwhile any advice on how to fix it because my fear is my mechanic might not understand all this English

Alapereketu:
A flashing check engine light on a high-mileage Toyota Camry often indicates a severe cylinder misfire, possibly accompanied by a "system too lean" code or a faulty catalytic converter. This requires immediate attention to prevent engine damage or catalytic converter failure.

Thanks boss🙏

Like I said I'm new to auto because this is my first car which I just bought some months ago so I don't even know all these things that you mentioned

I hope my mechanic will understand it

kingreign:
Check if the fuse for the AF and O2 sensors are intact, if they are intact and hasn't blown up, replace the sensors.

Jesustheking:
Thanks boss🙏

Like I said I'm new to auto because this is my first car which I just bought some months ago so I don't even know all these things that you mentioned

I hope my mechanic will understand it

Tell him exhaust sensors

I drive Honda Accord 2008, I noticed the Engine oil light has stop to turn off, I changed the oil the light is still on

WhizdomXX:
The steering oil in our rav4 started leaking uncontrollably. What is the solution?

Find the leak and fix it. Simple.

Tejutope2:
I drive Honda Accord 2008, I noticed the Engine oil light has stop to turn off, I changed the oil the light is still on

Check the wire and the socket of the oil switch. If all is clear and still on, check the oil switch itself for blockage in the oil flow orifice. If clear, replace the switch.

Jesustheking:
Good morning house

I'm new here

Kindly advise on what I can do 🙏
My big daddy Camry is showing check engine light and after scanning the attached error are seen

What does it mean and how can I fix it ?

Note that it's my first car and I bought it as Nigeria used some months ago.

Definitely a result of mutilated exhaust system or modified catalytic converters. Check the conditions of your exhaust systems.