Skip the auto shop - Our mechanics make house calls

Q: Vibration in car body when in Drive

asked by on

When I am at a red light with the lever on Drive position, there is a vibration in the car body. I did some experimenting and found that if I slightly increase the engine speed while holding the brakes, the vibration disappears. So I asked the auto repair shop to do it - to increase idle speed of the engine. They told me that the car is pre-programmed and that they couldn’t do anything there. Can you explain this to me please and tell me how I can get my car fixed? Thank you.

A: The idle on your 2006 BMW 545i is automatic...

The idle on your 2006 BMW 545i is automatically set by the computer, and if your idle is not within specifications, then you can have the throttle body and idle air valve cleaned. The motor and transmission mounts should be checked to see if they are sagging or broken. The base idle is set by the throttle plates, and the computer idle is set by the computer program and neither is adjustable. Cleaning the throttle plates and air valve will raise the idle some and may help along with cleaning the induction and injection system will help idle smooth out. If you want to have this checked, a certified technician from YourMechanic can come to your car's location to diagnose your rough idling issue and assist with a repair.

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: No acceleration or RPM increase while pressing gas pedal

It sounds like you may have an issue with your throttle position sensor. This sensor sends a reference voltage to your power-train control module, which uses that to determine ignition timing and fuel trims. If the power-train control module is...

Q: Transmission malfunction error code

Hello. You will need to know if your BMW appears to be running normally, or if there are noticeable problems. If there are problems, take it immediately to a qualified technician to diagnose before more damage can happen. Regardless, you...

Q: replaced brake shoes in the back (they are drums,) but now they dont work...

Hello there, thank you for asking about your 2001 Ford Escape. You may have put in a spring incorrectly or did not adjust them tight enough before putting on the drum. If you think there is a missing spring then...

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.