₦airaland Forum

Hello All,

Please i need help with my Honda Civic 2008, Some times in the morning when we start the vehicle and engage the gear, it have this very rough jerking, and when this happens during movement you would notice a bit of jerking when the gears are changing. However, once movement have being made for like 10 mins thereabout and the engine is restarted, everything go smoothly. No jerking, change between gears is very smooth.

We have scanned it and there are no codes. The oil is well guaged.. its a on and off thing.. Maybe once or twice in a week.

Please help

Louiscars:
Top three best option woukd be the
2006 - 2008 highlander- pretty much reliable, you can even get one with third row option, for your budget the latter year ( 2008 ) would be a little expensive to get though
2008-2010 Rav4 - also well within budget, get a 4 plugs variant for fuel economy and try pushing for the 2010 model year with the 2AR engine it’s much better than the former year
2008-2012 Acura mdx - well within budget for a registered 2011 model year, honestly it a really reliable suv and would also give you a premium feel compared to the other ones above , but it’s not the best when it comes to gas mileage and again you have to be mindful of the fuel that goes into it, thank you

Thank so much.
What about a crv?

luvlyoracle:
Thank so much.
What about a crv?

the 2008-2010 Crv is a very good option also, Infact with 8m you’d get a solid toks standard unit while for Tokunbo from average price listing of this car you’d spend 10.2m ( you’d actually see cheaper options Infact some close to your budget but please be wary of Rust most especially on Canadian ones, they’re pretty common, confirm duty on the car is paid and also confirm drivetrain ) if you don’t mind I can help you get a good unit that checks all the boxes.

temi4fash:
Hello All,

Please i need help with my Honda Civic 2008, Some times in the morning when we start the vehicle and engage the gear, it have this very rough jerking, and when this happens during movement you would notice a bit of jerking when the gears are changing. However, once movement have being made for like 10 mins thereabout and the engine is restarted, everything go smoothly. No jerking, change between gears is very smooth.

We have scanned it and there are no codes. The oil is well guaged.. its a on and off thing.. Maybe once or twice in a week.

Please help

Good morning sir.

Vehicle: Honda Civic 2008 (Automatic)
Concern: Intermittent rough jerking during cold start and gear engagement, especially in the morning

Let’s address this properly before unnecessary gearbox replacement or random repairs begin.


* Professional Diagnostic Insight

From your explanation:

• Jerking happens mostly during cold start
• Vehicle jerks when shifted into gear
• Gear changes also become rough during movement
• After about 10 minutes of driving and restart, everything becomes smooth again
• No fault codes stored
• Transmission fluid level is okay
• Problem is intermittent (once or twice weekly)

This is a very important pattern.

The fact that the issue:
• Happens mainly when cold
• Disappears once the vehicle warms up

…strongly suggests a cold-condition hydraulic or electronic control issue, not necessarily a completely damaged transmission.


* Important Observation

Many people assume:
“No code = no problem.”

But in transmission diagnosis, that is not always true.

A transmission can still have:
• Pressure irregularities
• Solenoid sticking
• Valve body wear
• Or weak mounts

…without immediately triggering fault codes.

* Most Likely Causes (Based on Your Symptoms)

1. Transmission Fluid Condition / Hydraulic Delay
Even if fluid level is correct:

• Old or degraded ATF can lose cold-flow performance
• Hydraulic pressure becomes unstable during morning startup

This can cause:
• Harsh engagement
• Jerking during shifts
• Delayed pressure response


2. Valve Body or Solenoid Sticking (Very Common on Cold Start)
When the transmission is cold:

• Solenoids may respond slowly
• Valves may stick temporarily

Once warm:
Fluid flows better and operation becomes smooth again.

⸻

3. Weak Engine or Transmission Mounts
Mounts can exaggerate jerking sensation, especially:
• During gear engagement
• During cold idle vibration

Even if the gearbox itself is not severely damaged.


4. Early Torque Converter or Pressure Regulation Issue
Possible if:
• RPM fluctuates during shift
• Jerking feels heavy during acceleration


* What Should Be Checked Now

Before replacing any gearbox components:

1. Inspect Transmission Fluid Condition
Check for:
• Burnt smell
• Dark coloration
• Incorrect fluid type


2. Perform Cold-Start Live Data Scan
This is very important.

Monitor:
• Shift timing
• Solenoid operation
• Transmission temperature
• Line pressure behavior


3. Inspect Engine & Transmission Mounts
Especially if:
• Jerking feels excessive physically


4. Check for Pending Transmission Codes
Some faults may remain in:
• Pending status
• History memory
without triggering dashboard lights.


* Do NOT Do This

• Do NOT rush into gearbox replacement
• Do NOT keep resetting ECU repeatedly
• Do NOT allow random “gear calibration” without diagnosis
• Do NOT ignore the issue because it disappears later


• Professional Insight

Your transmission is showing signs of:
Cold-condition pressure or control instability.

The good news is:
Since the vehicle becomes smooth after warming up, this may still be at an early stage.

Early diagnosis can prevent:
• Valve body damage
• Clutch wear
• Full transmission failure later.

* Ryan Automotive Limited Recommendation

The correct next step is a structured cold-start transmission diagnosis, focusing on:

• Live data analysis during morning startup
• Solenoid response evaluation
• Transmission fluid condition
• Mount inspection
• Hydraulic pressure behavior

At Ryan Automotive Limited, we carry out professional transmission diagnostics and fault tracing to accurately identify intermittent issues like this instead of relying on guesswork or unnecessary part replacement.

If diagnosed early, the repair is usually far cheaper than waiting for complete gearbox failure.


Precision • Transparency • Excellence

Ryan Automotive Limited

temi4fash:
Hello All,

Please i need help with my Honda Civic 2008, Some times in the morning when we start the vehicle and engage the gear, it have this very rough jerking, and when this happens during movement you would notice a bit of jerking when the gears are changing. However, once movement have being made for like 10 mins thereabout and the engine is restarted, everything go smoothly. No jerking, change between gears is very smooth.

We have scanned it and there are no codes. The oil is well guaged.. its a on and off thing.. Maybe once or twice in a week.

Please help

Check the filter if it's clogged.
Replace it if you've never done that before.

MAP Sensor Failure Symptoms: Diagnosis and Repair
This article explains the working principles of a MAP sensor (manifold absolute pressure sensor), lists seven common malfunction symptoms and causes, and explains how to quickly locate the problem using professional auto diagnostic tools like the Autel scanner, as well as common repair methods.

Finally, it addresses some of the most pressing questions car owners have, such as "Can I still drive my car if my MAP sensor is broken?"

What is a MAP sensor?
The MAP sensor is a crucial component of the engine's fuel injection system. Its primary function is to monitor pressure changes within the intake manifold and convert them into electrical signals that are transmitted to the engine control unit (ECU).

The ECU then uses these signals, combined with data from oxygen sensors, temperature sensors, and other sensors, to calculate the appropriate fuel injection amount and ignition timing, ensuring efficient and stable engine operation under various operating conditions.

The location of the MAP sensor varies depending on the vehicle model, but is commonly found in:

On or near the intake manifold
In the intake manifold after the turbocharger
Inside the air filter box
In the firewall (connected to the manifold via a vacuum line, such as in some Ford F-Series trucks)

How does a MAP sensor work?
When the vehicle is started, the ECU provides a reference voltage to the MAP sensor. The piezoresistive or piezoelectric element within the sensor senses subtle changes in intake pressure and converts them into electrical signals.

For example, when you press the accelerator pedal, the throttle opening widens, increasing intake pressure. The MAP sensor then responds with a new voltage signal. The ECU then recalculates the fuel injection rate and ignition timing to ensure efficient engine combustion and control exhaust emissions.

Common Symptoms of a MAP Sensor Failure
When the MAP sensor is malfunctioning, it can affect engine combustion, fuel consumption, and emissions. Common symptoms include:

Check Engine Light (CEL) illumination
Idling rough or jittery
Engine difficulty starting or stalling
Misfire or knocking
Significantly increased fuel consumption
Exhaust emissions exceeding standards, resulting in failure to pass the annual inspection
The vehicle enters "limp mode" (limited power)
👉 For example, a Harley-Davidson motorcycle with a faulty MAP sensor may experience noticeable jitter at idle or even stall.

When the MAP sensor is not functioning properly, the Check Engine Light (CEL) comes on.
The check engine light may be on due to a bad MAP sensor.

Common Causes of MAP Sensor Failure
External Contamination: Oil, dust, or moisture can cause abnormal readings.
Internal Damage: Deterioration of the sensor element, circuit breakage, or loose connections.
Intake System Leaks: Cracked hoses or loose connectors can cause pressure to differ from actual pressure.
Installation or Accident Damage: Physical impact or improper installation can damage the sensor.



Reading fault codes:
Using Autel Scanner to read DTCs from the ECU can quickly identify whether the MAP sensor is involved. You can also view the real-time data stream to determine if the sensor is outputting abnormal signals.

Visual Inspection:
Check for damage to the sensor, deterioration or loosening of the vacuum tube, and poor contact in the connectors

Measure Voltage:
Turn on the ignition (without starting the vehicle) and check whether the sensor provides a normal reference voltage (generally approximately 5V).

Repairing MAP Sensor Faults
Sensor Replacement: If the sensor is confirmed to be damaged, replace it directly.
Clearing DTCs: After replacement, use an Autel scanner to clear the fault history.
Road Test: Drive again and observe whether starting, idling, and acceleration return to normal. Scan again to confirm no new DTCs.
Can I still drive with a faulty MAP sensor?
Technically, the vehicle will still operate, but the following may occur:

Lack of power, slow acceleration
Significantly increased fuel consumption
Difficulty starting
Severely excessive emissions
⚠️ Driving with this fault for an extended period may damage the engine and catalytic converter, so continued driving is not recommended.

FAQs
Q1: What happens if the MAP sensor fails?
A: Engine performance degrades, fuel consumption increases, and exhaust emissions fall below standard. The fault light illuminates, prompting the owner to promptly inspect the sensor.

Q2: What happens if the MAP sensor is unplugged?
A: The ECU enters protection mode, significantly reducing vehicle power and forcing the vehicle to travel to a repair center at low speeds. Fuel consumption and emissions also deteriorate dramatically.

📖 Summary
Although small, the MAP sensor is directly related to engine combustion efficiency and emissions control. If an abnormality occurs, use diagnostic tools to promptly identify the problem and replace or repair it as appropriate to avoid significant losses.

jceesquare:
Check the filter if it's clogged.
Replace it if you've never done that before.

Transmission box filter?

Am not sure we have before and I have never seen a filter in it too.

Would ask my mechanic

Thank you

Jesustheking:
Pls respond to your email

Much respect boss

Good morning. Sorry the redirect function isn't working because I'm logged in on the mobile site and not the app.

Please chat me on whatsapp
08145186824

temi4fash:
Transmission box filter?

Am not sure we have before and I have never seen a filter in it too.

Would ask my mechanic

Thank you

It is on the transmission underneath the air filter box and not inside.

It stopped when I fixed my gear switch. I drive 07 accord

temi4fash:
Hello All,

Please i need help with my Honda Civic 2008, Some times in the morning when we start the vehicle and engage the gear, it have this very rough jerking, and when this happens during movement you would notice a bit of jerking when the gears are changing. However, once movement have being made for like 10 mins thereabout and the engine is restarted, everything go smoothly. No jerking, change between gears is very smooth.

We have scanned it and there are no codes. The oil is well guaged.. its a on and off thing.. Maybe once or twice in a week.

Please help

Please my car is displaying Maint reqd and also displaying the red warning sign.
This happen after I embarked on a long trip and it popped up on my way back.

Experts in the house, please what should I do?

cryptocherith:
Please my car is displaying Maint reqd and also displaying the red warning sign.
This happen after I embarked on a long trip and it popped up on my way back.

Experts in the house, please what should I do?

When last did you service the car? That why the maintenance light is coming on.

Scan the car to know why the other light is coming on

Thanks for the quality information.

Abbeyismo:
When last did you service the car? That why the maintenance light is coming on.

Scan the car to know why the other light is coming on

I just confirmed from the seller I got it from that it was serviced about 11 months ago.

Thank you for the information.

I will go do the scan asap.

cryptocherith:
I just confirmed from the seller I got it from that it was serviced about 11 months ago.

Thank you for the information.

I will go do the scan asap.

Omooo,una dey try to

11 months?

You don't need to scan the car, just change your engine oil and oil filter and watch how to reset maintenance required light in YouTube or you tell your mechanic do reset it and the light would disappear

cryptocherith:
I just confirmed from the seller I got it from that it was serviced about 11 months ago.

Thank you for the information.

I will go do the scan asap.

cryptocherith:
I just confirmed from the seller I got it from that it was serviced about 11 months ago.

Thank you for the information.

I will go do the scan asap.

Service ur car and reset the maintenance light it will go off after reset

Abbeyismo:
Service ur car and reset the maintenance light it will go off after reset

2010 Toyota camry. 2AR venza Engine.
P0014 Code.
Issue started when one camshaft was replaced due to damage.


Car jerks alot.

Looking for timing chain expert.

elvisco44:
2010 Toyota camry. 2AR venza Engine.
P0014 Code.
Issue started when one camshaft was replaced due to damage.


Car jerks alot.

Looking for timing chain expert.

Where's your location?

lyort:
Where's your location?

Lagos

elvisco44:
Lagos

Which part of Lagos

Hello sir. I need some guidance on what to check,
Car, Hyundai sonata 2008. 2.4.
When driving after like 30mins to 1 hours. The car finds it difficult to fire especially after hitting the breaks, it gradually picks, climbing hill with this can be hard.
I have changed the fuel pump, drove on Sunday same issues, drove today, picks especially when you fire gradually.