Skip the auto shop - Our mechanics make house calls

Q: Rough idle and stalling with exhaust popping

asked by on

truck recently started idling really rough, stalling at times with exhaust popping sounds. i had to hold the gas pedal just to keep it from stalling. it would finally smooth out once it warmed up, only stalling or bogging down every now and then. it definitely has a hard time staying cranked when the engine it cold. a mechanic a few days ago replaced the EGR gasket and pressure sensor and cleaned out the ports and replaced the spark plugs and wires. he said it could be the air filter being dirty and possibly the MAF could be bad. i cleaned the air filter out and re-oiled it. still the same problem. just hoping to get a second opinion on if the MAF could be the culprit. thanks!

My car has 220000 miles.
My car has an automatic transmission.

A: The first thing to do is to get rid of the ...

The first thing to do is to get rid of the oil type air filter. This oil bath type filter can cause the mass air flow to be contaminated with the oil from the filter you are using. You should first try and change out the air filter with a factory paper type. Then clean out the mass air flow sensor using special mass air cleaner spray and let it dry completely and reinstall it. Road test vehicle to see if problem is corrected. If it is then scan the computer and clear the Check Engine Light. If codes to the mass airflow sensor return and vehicle runs bad still then replace the mass airflow sensor. Sometimes cleaning the oil that contaminated the sensor will fix the problem if the sensor was not shorted out or damaged by the oil from the air filter oil.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: How do you operate the hazard lights?

If you are ever stranded on the side of the road, you’ll need to use your hazard lights to warn other drivers of your presence. Depending on where you live, it may also be legal to use your hazard lights...

Q: Dies during idle or when put in gear.

Hello, and thank you for writing in. Everything you have done so far has been helped narrow down possible issues. You should check your vacuum supply at the intake, the intake air temperature sensor, your oxygen sensors, and the possibly...

Q: car jerks/gas pedal

Hi, thanks for writing in. This is more than likely a fuel delivery issue, given the symptoms you describe. The idle air control valve is a unit that regulates the air flow into the engine as it is mixed with...

Related articles

What Causes Hoses to Leak?
While the largest part of your engine is mechanical, hydraulics plays a significant role. You’ll find fluids at work in a number of different areas. Your car's fluids include: Engine oil Transmission...
How Long Does a Distributor O Ring Last?
The distributor is part of the ignition system in your vehicle and its purpose is to route high voltage from the ignition coil to the spark plug. The spark plug then...
P2103 OBD-II Trouble Code: Throttle Actuator Control Motor Circuit High
P2103 means there is a fault with the throttle actuator control motor circuit, likely due to a defective electrical component or part.