Skip the auto shop - Our mechanics make house calls

Q: Jerking while shifting during deceleration - 1989 Cadillac Brougham

asked by on

I have intermittent transmission problems on my car. While I'm driving around the city, I have no issues and the shifting is smooth. But, while I'm decelerating to bring the car to a halt, like coming off the freeway, the car begins to jerk during shifting. I had the transmission fluid replaced which helped for a while but hasn't solved the issue. Do you have any suggestion what might help with this?

Hey there. The EGR system may get carbon in it causing the jerking on deceleration. Try decarbonizing the engine to see if it helps. You may need to remove the EGR valve and clear out excess carbon from the passages. For help having this taken care of, have a certified mechanic from YourMechanic come to your car’s location to diagnose the jerking shift issue and assist with proper repairs.

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: Engine hot, difficult shifting, shutting off

Hello there, thank you for asking about your 1987 Oldsmobile Cutlass Calais. A common problem that can cause stalling is a stuck torque converter clutch. This device connects the link between the engine and transmission, but should slip some when...

Q: Car leaking transmission fluid

Transmission leaks can become very expensive if not addressed quickly. The fluid acts as a lubricant and cooling fluid, so if it's missing, heat in the form of friction can cause catastrophic failure. Possible points of leakage include the transmission...

Q: Door locking mechanism malfunction - 1992 Cadillac Brougham

Hey there, thanks for writing in about your 1992 Cadillac Brougham. The door lock actuators will start binding and not allow you to lock or unlock the car. If you cannot find the parts, then you could have them removed...

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...
How to Avoid Back Pain in a Car
If you have back problems, sitting in a car for an extended period of time can be excruciating. Even without back problems, you could experience discomfort and soreness from...
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...