No upshift can be the shift valve or the forward clutch (F1?) and brake
band (B2?). Can the shops you work with test the VB
? If you are certain
everything except the VB
is in good order and the VB
continues to be a
problem, then a $199 rebuild from the likes of Phoenix may help:
ShadeTree via CarKB.com wrote:[color=blue]
> My first engagement problem was the TC not fully seated into the oil pump
> because I left the TC on the engine (drive plate) and installed the
> transmission to the engine. That was wrong!!! I had no damage to the TC or
> pump. But if you do have damage there will be no guessing at it. Has you may
> already know the TC does needs to slip into the transmission first before
> installing the tranny. You'll know it is in place by turning two clicks in
> (may need to work it back & forth) and when installed correctly it may feel
> like it is rubbing against the oil pump. This is o.k because when you attach
> it to the drive plate it will be in the correct position.
> My second problem with engagement came with no line pressure from a missed
> placed washer in the valve body. When I reassembled the valve body a put a
> washer in front of a spring instead of behind it. This valve was the main
> regulator valve which its name says it all. Now the tranny will engage into
> forward and reverse. If you didn't fool with the valve body at all then there
> would be no reason to fool with it now.
> 1. Check for line pressure: Fastest way, but can be messy is to take off the
> cooling line put your thumb over it and have some one start the engine. At
> idle the pressure should be no lower than 53 psi you should be able to get
> feel for it with your thumb. Of course a compression tester is the most
> accurate and less messy and the tranny has a testing port dedicated to this
> test. If you have no pressure chances are good it is the oil pump.
> 2. Have pressure and no movement: now troubleshooting becomes a little bit
> more complicated but I would start with the TC especially if the tranny was
> working on the other engine. I think all TCs are basically rebuilt and should
> cost around $150.00 that's what I paid at the local tranny parts store.
> I'm still having issues with mine and that it will not up shift and the the
> engine break engages instead of up shifting..I'm thinking I might still have
> valve body issues. If you have ideas I'll take them.