1993 Saturn SC2

I'm having an issue with my 1993 Saturn SC2.

It drives fine for 5 minutes and then the transmission starts to slip
run poorly. The temp gauge looks fine (not overheating).

If I let it cool down then it drives fine again for 5 minutes.

Anyone have a similar problem and solve it.

Thanks,

Bill

 

When was the last time you changed the transmission fluid? Ever? I'd
try changing the fluid first. It's a 15 minute job on that car since
there's a drain plug and a spin on external filter (like an oil filter).

Here's what I'd do...

Drain the fluid and change the filter.
Refill with fresh fluid (which I believe is Dexron III).
Drive it around for 20-30 minutes.
Dump the fluid again and refill with clean fluid.
Report back.

Cheers,