Skip the auto shop - Our mechanics make house calls

Q: mass airflow sensor

asked by on

I recently changed my mass airflow sensor, and the truck kept doing the same thing. Sputtering at stop lights and stalling out. The check engine light is still on. Is it fuel related?

A: Hi there: Sputtering and stalling can be c...

Hi there:

Sputtering and stalling can be caused by multiple mechanical problems ranging from simple items like clogged fuel injectors, to a vacuum leak, problems with throttle idle sensors and more. When I discover this type of symptom, the first thing I'll do is download error codes from the ECU, then road test the vehicle to determine if the error code and problem component matches the symptoms. Since the Check Engine Light is still on, the problem may be due to a different component; like a bad idle control valve.

If you have the right diagnostic tools and latest download error codes available, you might want to start with the process laid out above. If not, contact one of our local ASE certified mechanics here at YourMechanic. They'll be happy to help you accurately diagnose your Check Engine Light and fix it accordingly.

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

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Save up to 30%

Get a quote

What others are asking

Q: My car will crank but won't start. It gets fuel and I just replaced the coil pack - what could be the problem?

With a crank no start condition, you need to first determine what your motor is missing. Spark, fuel pressure, injector pulse or cam timing. This is best done with a fuel pressure gauge, a noid light to check for injector...

Q: Replaced a ruined cylinder head with a used cylinder head

From what you've described, it sounds like you have not put the camshafts in the correct positions. You need to use special tools to hold the camshafts in the correct position before tightening the cam gear. Once the first one...

Q: Loud roaring sound from right lower side when in drivers seat 2001 BMW 540i

Hi there - I suspect something driven by the serpentine belt has seized, putting a shock load on the belt, and snapping it. Could have been the AC compressor or compressor clutch (lower right front of the engine), power steering...

Related articles

Rules of the Road For Iowa Drivers
Driving on the roads requires knowledge of the rules, many of which are based on common sense and courtesy. However, even though you know the rules in...
How to Avoid Back Pain in a Car
If you have back problems, sitting in a car for an extended period of time can be excruciating. Even without back problems, you could experience discomfort and soreness from...
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...