Skip the auto shop - Our mechanics make house calls

Q: Car vibrating/shaking when idling

asked by on

Sometimes, when I'm sitting/idling, say, at a traffic light, my car shakes/vibrates; I can really feel it in my steering wheel but it seems to be the whole car. Turning the a/c off seems to make it better. If I put it in Neutral while at the light, the vibrating stops or lessens so that's what I've been doing when it happens. Otherwise, the car is in good shape; I do regular maintenance and I'm pretty easy on cars, in general. Any help will be much appreciated. Thanks, Shelly

My car has 37700 miles.
My car has an automatic transmission.

A: This may be related to an idle air control ...

This may be related to an idle air control valve or potentially low fuel pressure. The idle air control valve monitors air intake as it is mixed with fuel prior to being injected into the motor. When this is not working properly or sending inaccurate signals to the ECU, this may cause an improper amount of air and fuel to be supplied at idle. This will be worse when the AC is on as the AC requires more power from the engine to operate resulting in more of a strain on the engine. I would recommend having an expert from YourMechanic come to your location to take a look at the vehicle to determine what may be causing this shaking/vibrations.

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: car stalling,and running hot and idling up high. 1996 Toyota Camry

Hello. If your car is running hot, this needs to be addressed first. If there are other problems with your car, you can't diagnose them without being able to run the motor without overheating. If it is shutting off from...

Q: Car starting, idling, and then stalling

Hello. If the engine will only run for a short period of time then it may have a failing fuel pump or an electrical issue. Being that you stripped out the fuel filter connections, the metal lines may need to...

Q: Can a bad canister purge valve cause my car to shake/vibrate under the hood when i brake or make constant stops?

First thing to check is the problem codes that are setting your Check Engine light on. While it is true that fumes from the vapor canister are pulled into the engine during "coast down" when there is high vacuum in...

Related articles

P0052 OBD-II Trouble Code: HO2S Heater Control Circuit High (Bank 2 Sensor 1)
P0052 code definition HO2S Heater Control Circuit High (Bank 2 Sensor 1) What the P0052 code means This code is seen when the Engine Control Module (ECM) tries to control the...
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.