Skip the auto shop - Our mechanics make house calls

Q: Transmission slipping

asked by on

The transmission in my car is slipping and the differential is whining.

A: Sounds like you are having two issues. The...

Sounds like you are having two issues. The differential making noise is usually due to the gears wearing irregularly. This can be caused by low fluid levels or worn bearings in the unit itself. A check of the wear pattern on the gears as well as the backlash will determine what repair will need to be done to correct it. If the transmission is an automatic, a bad sensor, or actual clutch pack wear inside the transmission could be the cause. In both cases disassembly is required to some degree for a proper diagnosis of your transmission. If it is a standard transmission, your clutch might be worn out. If this is the case, the clutch and all related components will need to be replaced. In any of the cases above, the work should be done by a qualified mechanic.

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: Thumps and grinding noises in differential

It is possible that you could have a faulty wheel bearing. Wheel bearings can often cause grinding noises when the lubrication onside them dries up. I would recommend having your vehicle inspected once more for a rear wheel bearing failure....

Q: Surging idle and almost stalling on start up .

Hello there, many different faults can cause your 2000 Ford Expedition to have a surging idle and stalling issues. You have done great so far in your diagnosis and repairs thus far. There are a few other potential causes such...

Q: Car does not go into drive

Hello. A transmission that will not go into drive can be caused by a few different things. A few common causes are a failed ignition lock cylinder, stoplight switch, or transmission issues. The ignition lock cylinder and stoplight switch are...

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...
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...
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.