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.

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・Fair and transparent pricing

Get a quote

What others are asking

Q: Ticking noise during acceleration - 1998 Chevrolet Tahoe

Hello. If the noise is intermittent like this most of the time, it is due to a failing valve lifter. When a lifter will not hold pressure then this will occur. It can also happen if there is a bad...

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: What are the signs of brake wear?

Your car has four-wheel disc brakes, which means that each wheel has a rotor and brake pads. There are no drum brakes on your car. In addition, your pads have what are called “audible wear indicators” or “squealers”. These...

Related articles

How Do Power Car Windows Increase Passenger Safety?
Power windows are responsible for approximately 2,000 emergency room visits every year. When a power window closes, it exerts enough force to bruise or break bones, crush fingers, or restrict an airway. Though...
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...
P2428 OBD-II Trouble Code: Exhaust Gas Temperature Too High Bank 1
P2428 code definition A P2428 trouble code signifies that the PCM has detected a problem in the exhaust gas temperature sensor circuit in bank 1, which subsequently contains the number one...