Skip the auto shop - Our mechanics make house calls

Q: Clunking noise from rear

asked by on

I have a clunking noise coming from the rear of my car when it shifts from 1st to 2nd I just replaced the tranny and it worked fine and shifted through all gears greatly for a week then acted up

My car has 300000 miles.
My car has an automatic transmission.

A: Hi there. This is a somewhat common issue w...

Hi there. This is a somewhat common issue with the majority of the E90’s and E46 BMW’s. These motors have what is a called a dual mass flywheel which is commonly known for creating this kind of a slight clunk at lower RPM’s due to the imbalance between engine torque and transmission torque (common at lower rpm). The flywheel is actually two pieces of steel separated by a very hard piece of rubber, the wind-up in the flywheel can occur when the rubber is loaded then released. It is usually most evident at high torque differential (engine torque mismatched with transmission torque), low engine speed conditions. If you would like to have this diagnosed, consider YourMechanic, as a certified technician can come to your car’s location to correctly diagnose the noise.

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: Stalling when idling down

Disconnecting the battery allowed the engine management system to "reset" to initial factory settings. Driving it allows engine management to "adjust" to components that may not be functioning at their best: such as the mass air flow sensor, oxygen sensor,...

Q: Missing/Broken ECU - 1989 BMW 325i

If your ECM is failing or has failed, it shouldn't be extremely difficult to find a good shop to rebuild or replace them. There are a number of electronic rebuilders who rebuild ECMs (w/warranty). Also, there are a number of...

Q: I can hear a knocking sound coming from my front left wheel when brakeing at above 40 mph.

In may cases the knocking sound coming from the wheel area is caused by one of two issues; a warped brake rotor or the wheel bearings that are beginning to wear out. Vehicles made after the late 1990's (like your...

Related articles

What Causes Hoses to Leak?
While the largest part of your engine is mechanical, hydraulics plays a significant role. You’ll find fluids at work in a number of different areas. Your car's fluids include: Engine oil Transmission...
Rules of the Road For Iowa Drivers
Driving on the roads requires knowledge of the rules, many of which are based on common sense and courtesy. However, even though you know the rules in...
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.