I changed the transmission fluid sunday and test drove fine. Later sunday drove it again and it wants to shift into high gear really soon. It doesn't downshift when you give it gas either. Anyone had this problem or have any advice on how to fix it or what it might be? BTW it is an automatic.

 

92 Si with auto tranny... Hmm.. I wonder what it could be.

How many miles and when's the last time you serviced your tranny?

If you can't remember, it's probably time for a new one.