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 I change the distance units?

Your distance and measurement units can be displayed in two different ways: miles and gallons, or kilometers and liters. To change the setting, follow these steps: 1. Press the Up/Down buttons on the steering wheel until Settings is displayed on...

Q: Where is the map sensor located c

The MAP (Manifold Absolute Pressure) sensor should be located just in front of the throttle position sensor toward the back of the left side of the engine (assuming you are standing in front of it facing it). If you have...

Q: Car not starting after battery install

Hi. It seems like you may be having trouble with the power output and connections from your battery to your vehicle. It is possible that the battery was not charged from the store you bought the battery from. It could...

Related articles

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...
P2428 OBD-II Trouble Code: Exhaust Gas Temperature Too High Bank 1
P2428 code definition A P2428 trouble code signifies that the PCM has detected a problem in the exhaust gas temperature sensor circuit in bank 1, which subsequently contains the number one...
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.