help me please on 1999 Saturn SW2

1999 automatic saturn sw2 RPM runs high and has low power, what repair do i need. I changed catalytic converter and the car is now jerking and i can't increae speed

1 answer
Sounds like an automatic transmission problem to me. Unfortunately. You will need to have a diagnosis performed to find out what is happening.

First - check your fluid level to make sure it is clean and full.

Second - since you just replaced the catalytic converter, there could be a chance that a wire harness was left loose in that area by accident. Make sure all wiring connectors - especially those attached to the transmission - are all secure.