97 Jeep Trans problem

I have a Grand Cherokee with an automatic it shifts just fine till all the
fluids get to running temp then you lose first gear when starting out from
a red light. But if you shut it off for 10 mim it works just fine till
everything heats up again.

Any ideas ????

"welltender" <[email protected]> wrote in message
news:[email protected]...
> I have a Grand Cherokee with an automatic it shifts just fine till all the
> fluids get to running temp then you lose first gear when starting out from
> a red light. But if you shut it off for 10 mim it works just fine till
> everything heats up again.
>
> Any ideas ????
>

I would put some Lucas Transmission Stop Leak in it. It stopped my '91
Explorer from slipping. It might not help in your case but it'll only cost
a few bucks to find out. Also make sure your level is correct. And check
for vacuum leaks and transmission fluid on your vacuum connections.