Skip the auto shop - Our mechanics make house calls

Q: I felt a jolt while driving - could it be a transmission issue?

asked by on

I was driving on the highway at highway speed when I thought I was rear-ended. I checked my mirrors and no other drivers were near me. As I was trying to process what happened I felt the jolt again. I stopped and checked for any clues to what had happened. I didn't see any leaks or signs of trouble. I decided to drive the car back to my house just a few miles away. On the way home at about 40-50 mph an AT light came on next to the dash gear indicator and the gear indicator got stuck on 3. By the time I got home the car was smoking but not overheated there was transmission oil that had overflowed out of the tranny dip stick tube.

My car has 110000 miles.
My car has an automatic transmission.

A: Hi. This is a good indication that the tran...

Hi. This is a good indication that the transmission has overheated and damaged a lot of the internal parts of the transmission. This could have been caused by low transmission fluid or extremely dirty transmission fluid causing a cloth in the transmission. Your transmission will need to be rebuilt or replaced with a new one to fix this problem. I suggest you take your car to a local transmission shop to get it repaired. Unfortunately, here at YourMechanic we do not replace transmission. We could offer a second opinion by having these symptoms diagnosed by one of our mobile technicians in order to confirm my suspicions and suggest an accurate repair. Best of luck.

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: Input turbine sensor location? Forgot to change transmission fluid at 80000. Should I change transmisión fluid first?

This is a generic code for the input speed sensor located on your transmission. This code may be triggered for many reasons such as a defective input speed sensor, a faulty output speed sensor, a damaged, worn, or broken reluctor...

Q: Gears grinding in truck.

This is a very common problem. There is a problem with the synchronizer for 3rd gear inside your transmission. The synchronizer helps the gears mesh properly when changing gears. When a synchronizer goes bad the gears cannot mesh correctly so...

Q: Car not moving when in drive.

This is usually caused by a valve body or leaking pressure inside the transmission. The transmission would need a complete check with the correct scanner and pressure testers to find the cause of your problem. I would recommend having a...

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 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...
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...