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.

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!
  1. Home
  2. Questions
  3. Rough idle and stalling with exhaust popping

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: Having trouble diagnosing a stalling issue, do I need a new fuel pump?

If the engine is not getting fuel then it may need a fuel pump. I would start by checking to see if the engine is losing spark or fuel when this occurs. Knowing if the problem is spark or fuel...

Q: why is my car chugs and dies after a half tank of gas

The fuel pump may be starting to go bad, when you get below half a tank, the pump does not submerge in fuel as much to keep it cool and it will seize up and stall the motor. You will...

Q: Oil Pan Replacement

Hi Robert. Typically when an oil plug is stripped and a larger sized bolt is used, it's a temporary solution. Unless the oil pan was re-threaded to match the newer and larger bolt, it's a good idea to replace the...

Related articles

What are the Car Pool Rules in Hawaii?
Hawaii is widely regarded as a land of vacation and relaxation, and as such, its scenic roads and routes are far better known than the state’s freeways. But, as with all...
How Much Does a Mechanic Make in Vermont?
Automotive technician jobs in Vermont have an average mechanic salary of $37k, with some mechanics earning a salary of $53k.
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.