[123pugsy]

I have a problem with a friend's tranny. I helped him out with it.
Fresh rebuild (1995 TransAm) with all new clutches, steels, bonded pistons.
It had a Transgo shift kit already and everything put back as per Transgo instruction sheets.
After a drive around the block and stopping at the lights, it won't automatically upshift anymore.
It will upshift fine manually.

Thoughts?

[tnsmith10]

Originally Posted by 123pugsy

I have a problem with a friend's tranny. I helped him out with it.
Fresh rebuild (1995 TransAm) with all new clutches, steels, bonded pistons.
It had a Transgo shift kit already and everything put back as per Transgo instruction sheets.
After a drive around the block and stopping at the lights, it won't automatically upshift anymore.
It will upshift fine manually.

Thoughts?

either shift solenoids, or the pressure manifold switch.

[123pugsy]

Thanks.

Only after its warmed up?

[tnsmith10]

Originally Posted by 123pugsy

Thanks.

Only after its warmed up?

with what your explaining to me its like its not down shifting back to low after you come to a stop, correct?
if you have any scan tool with a live data stream, you can watch the shift solenoids.
also you can watch the trans temp as well to see if it shows any problems. ( the trans temp sensor is in the pressure manifold.)
it will also show whether or not the computer is commanding a down shift back to low gear.
there are times that a electronic device can test good and work for a certain length of time, say like a car warming up to operating temp and quit working once the vehicle has gotten hot.

[123pugsy]

Thanks tnsmith.