Skip the auto shop - Our mechanics make house calls

Q: Revving out of control

asked by on

My car has 7500 on it. I was coming to a stop, and the engine revved like it was out of control. The car wanted to keep moving! I slammed on the brakes to stop it. I put the car in park and turned it off. I turned it on again in park and the engine revved up again. I turned it off again. I waited until traffic cleared and turned the car back on. It seemed OK, but I had it towed to the dealer. The computer scan showed no problem, but I am afraid to drive it. What do you recommend?

A: It sounds like you may have an issue with y...

It sounds like you may have an issue with your idle air control valve on your 2011 BMW 328i. The idle air control valve is responsible for keeping the RPMs within a certain range during idling at a stop. If the idle air control valve is malfunctioning, this can cause the RPMs to rise. When the RPMs rise while the vehicle is in gear, the vehicle will lunge forward causing the symptoms you are experiencing. The idle air control valve usually will not throw a code when it fails. I would recommend having your idle air control valve tested and replaced as necessary.

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・Fair and transparent pricing

Get a quote

What others are asking

Q: Need new spark plugs and coils too early

You stated that your vehicle is a four cylinder engine, I'm confused as to why you are replacing six spark plugs? To answer the question of "Will it happen again?". It most likely will. If three out of the four...

Q: Load on truck's engine causes loud knocking noise

Hello. It sounds like there may be a problem with the piston or the valves in cylinder 5. Loose rod bearings to the piston can cause a knocking noise and/or a misfire condition. A worn out piston can also cause...

Q: How do I adjust the front head restraints?

Each front seat has a head restraint to help protect the driver and the front seat passenger in the event of an accident. When you get in the vehicle, you should adjust your head restraint so that the top of...

Related articles

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...
P0240 OBD-II Trouble Code: Turbocharger Boost Sensor B Circuit Range/Performance
P0240 code definition Turbocharger Boost Sensor B Circuit Range/Performance What the P0240 code means P0240 is an OBD-II generic code triggered when the Engine Control Module (ECM) detects the intake boost...
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.