Skip the auto shop - Our mechanics make house calls

Q: Car idling rough in park and drive

asked by on

When I am sitting in my car while it is idling in park, and I turn on the AC, the car shakes and feels like it is losing power. It also shakes while my car is idling in drive. And then when I accelerate, the engine sounds different than before.

A: It sounds like you have a bad engine mount....

It sounds like you have a bad engine mount. Engine mounts are constructed of a solid rubber over metal, and are in place to dampen the vibrations from the engine to the car. When the mounts wear out, the vibrations can't be dampened. I think there are 4 mounts on your vehicle. A trained professional will need to put the engine under torque to see which mounts are bad and need replacing. They will be able to diagnose your car's rough idle and determine exactly what repairs are needed.

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・Save up to 30%

Get a quote

What others are asking

Q: when shifting gears release clutch feel like it's still engaged

This is a symptom of a slipping clutch disc. You should have a mechanic verify the clutch linkage is not binding and quote the replacement clutch.

Q: If the clutch slave cylinder goes out, is it necessary to replace the clutch as well?

Hi there. From the description you have provided, it would be advisable to replace the clutch assembly at 100,000 miles. In order to replace the clutch slave cylinder in your vehicle, the transmission must be removed. The clutch assembly most...

Q: My Altima would not move after stopping at stop sign. I had not had any problems the 20 miles I had just driven.

Hi and thanks for contacting YourMechanic. The battery in the vehicle has a burned cell and it needs replaced. If the battery was low on voltage, it is best to put the battery on a trickle charger for more than...

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...
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.
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.