Skip the auto shop - Our mechanics make house calls

Q: When accelerating, car backfires or turns off

asked by on

I very much like my car, but it is having sensor problems. When I step on the gas, it will not accelerate or else it will start backfiring and sometimes even turn off. Then I have to let it cool down before it will work great again. I purchased a new fuel pump because I thought it was that, but replacing the fuel pump didn’t make any difference. I have also replaced the following: camshaft sensor, coolant sensor, new engine speed sensor, thermostat assembly. The car performs great, but the check engine light is on.I read that the solenoid sensor can cause cars to backfire, so I purchased one, but have not yet installed it. I took my car to the repair shop for them to check it and was given multiple diagnoses like: coolant sensor, engine misfire, thermostat, oxygen sensor. I was asked if it overheats and I explained it does not, so they suggested we start with the least expensive part. Before letting them perform any replacements, what is your diagnosis and solution?

A: Hello. There is a possible recall for the i...

Hello. There is a possible recall for the ignition control module on your vehicle. You will need to contact a GM dealer and see if your vehicle is on the recall for the recall 03v231000 ignition control module failure. The recall should be done at no cost to you if your vehicle is covered on the recall. If it is not covered then you may still need to replace the module as it will cause loss of power, and even the backfire you have been having.

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: Oil on electrodes of spark plugs and cylinders

First, visible amounts of oil on the spark plug electrode is never a good sign. To me, if the vehicle starts and struggles to run, there may be a major mechanical malfunction regarding your explanations. Have the mechanical timing checked...

Q: Truck is back-firing.

There are a few possible causes for an engine to backfire. Some of the more common causes are a vacuum leak, lean condition caused by a weak fuel pump, an exhaust manifold leak, or a faulty ignition system. With the...

Q: Truck makes loud noise when accelerating.

Hello. There are multiple things that may cause loud noises when stepping on the gas pedal such as axles, valve lifters, and catalytic convertors. I suggest you have a technician inspect the vehicle since there are several things that may...

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...
How Long Does a Heater Control Valve Last?
Keeping the right amount of coolant in a car is essential in keeping the engine at the right temperature. Failing to have the right amount of coolant or even bad elements...
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.