Skip the auto shop - Our mechanics make house calls

Q: Differential Noise

asked by on

Hi, I recently purchased a bmw. I started hearing a whining/grinding noise coming from the car when I accelerate. It seems to be coming from the back but I am not sure. After extensive research I believe it is the differential. However I would like to know is there a possiblity that changing the oil in the differential could make the noise go away or would I have to replace the whole differential. The whining/grinding noise is very loud.

My car has 160000 miles.
My car has a manual transmission.

A: Hello. The noise you are hearing could very...

Hello. The noise you are hearing could very well be the differential. The fact it becomes worse when you accelerate is a good indication. The best way to tell is simply to do an inspection. Changing the oil regularly is the best way to prolong the lifespan of the differential. Once enough damage has been done, you will need to replace it. The noise sounds like it has significant damage. The differential wouldn’t make a grinding noise otherwise. You can drain and inspect the differential, but you should be ready to make the full repair need be. Otherwise you will waste differential fluid having to fill it up and take it to the shop. Our mechanics do make house calls if you get yourself in over your head.

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・Fair and transparent pricing

Get a quote

What others are asking

Q: Transmission noisy in all gears, at around 2500 RPM

The noise may not be coming from the transmission but the engine since you say it happens at 2500 RPMs no matter what gear is selected. You may be hearing the intake manifold runner control noise changing at that engine...

Q: BMW e90 320d jerking at pull away, and in 2nd gear, reduced power, turbo sound has changed.

Hi there. Since this occurred right after driving in some dusty conditions, I would check the air filter first. If the air filter is dirty then this will occur. If the air filter is fine, then I would also clean...

Q: My 2005 Impala ls stalls after start up when the engine is warm

This can happen for a variety of reasons, however, one of the most common reasons for this is a unit called an idle air control module failing. This is a unit that monitors the air/fuel mixture as the air comes...

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...
What are the Car Pool Rules in Hawaii?
Hawaii is widely regarded as a land of vacation and relaxation, and as such, its scenic roads and routes are far better known than the state’s freeways. But, as with all...
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...