When shifting the transmission into drive or reverse it jerks and the engine shuts off?

Hi,

It sounds like the torque converter may have failed. When the engine is running, the engine is still turning along with the impeller In the torque converter. However, the turbine cannot turn. If it does, what you described happens. Basically, this is what happens when you have your car's engine running, the transmission is in gear, and you have your foot on the brakes and not moving.

What I suggest is to first make sure there are no diagnostic trouble codes stored. This vehicle has an OBD 1 system that doesn't require a scan tool. All you need is a short jumper wire or even a paper clip. Follow the directions in this link and let me know what you find:

https://www.2carpros.com/articles/buick-cadillac-chevy-gmc-oldsmobile-pontiac-gm-1983-1995-obd1-code-definitions-and-retrieval-method

Take care,

Joe