1993 Oldsmobile Ciera transmission not shifting

SOGRACE1963

MEMBER
1993 OLDSMOBILE CIERA
3.3L
6 CYL
2WD
AUTOMATIC
185,000 MILES

Hi I have a 1993 oldsmobile cutlass ciera when I get going it doesnt down shift I get to 35 mph and its not shifting also it was shifting hard then I blew out a top raidiator hose we replaced it then next thing we started driving home it would not down shift. Whats the problem and how do I fix it?

1 Reply

KASEKENNY

MECHANIC
18,907 POSTS

This could be an issue with the torque converter but there are a couple of things we need to check first.

First is we need to check for codes.

https://www.2carpros.com/articles/checking-a-service-engine-soon-or-check-engine-light-on-or-flashing

If there are no codes, then we need to find out if the fluid is full and in good condition. Please use this guide to help with this process.

https://www.2carpros.com/articles/how-to-check-and-add-transmission-fluid

If these check out, then we have an issue with the torque converter clutch not releasing.

Basically, this clutch gets applied and it is not able to release and then when you shut the engine off and the pressure is released then it releases, and you can accelerate again until it is applied, and it happens again.

I am attaching some info below about downshifting that will explain this. You will need to replace the converter in order to fix this.

Please let me know about this info and we can go from there. Thanks

Images (Click to make bigger)