Like the title says, my 2-3 WOT upshift point keeps steadily getting higher. Originally after I got my tranny rebuilt it shifted to 3rd at 5500 rpm or there abouts. After I put a Darrel Young 2400 rpm stall converter in I noticed the shift point moved up to roughly 6000 rpm. Stayed that way for like 6+ months. Now tonight it started not wanting to shift till like 6500+ rpm. TOO darn high. If I back off slightly it will go ahead and shift then I get back on it and it works fine. But that's a PITA.

Anyone have any ideas what might cause this? I checked fluid level, looked dead on right where it should be (checked on level ground, engine running in park. That's the correct way right?). The tranny shifts fine otherwise. The 1-2 is crisp enough to bark the tires usually, and it hasn't changed rpm points. The downshifts are great, even 3 to 2 and when it does shift from 2-3 it shifts plenty firmly. No slippage in any gear that I can tell, and it's pulling hard even when it doesn't want to upshift.

Any ideas? Could this be TV cable related at all? It's set about where it needs to be I think, tranny upshifts/downshifts right on at part throttle. I hope the thing isn't dying on me...

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Ray87Z
-Vortec headed 350.
86 IROC w/ a cammed 305 TPI.
Formerly Ray86IROC.
www.inter-scape.com/Ray

 

Nothing for me eh?

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Ray87Z
-Vortec headed 350.
86 IROC w/ a cammed 305 TPI.
Formerly Ray86IROC.
www.inter-scape.com/Ray

 

Try posting your question on the transmission board.

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86 Tramaro 90% Trans Am/ 10% IROC/Z (nose, hood,& fenders)
Trans Am Mods as of 1/10/01
3inch
T.E.S/Flowmaster setup,gutted cat,gutted maf,relocated mat,373 gears,upgraded factory chip,255 lph walpro f/pump & throttle body coolant bypass
njdaewoo@excite.com
New mods as of 6/10/01:
383sb engine
Comp Cam Xteme XR264hr-12
smog pump by-pass

 

Ray, you're going to have to reset the TV cable first, only takes a minute or two.

The "proper" way to check the fluid is to first go to D then R, then back to park, but I've never seen a difference in readings...so you're probably okay...this was with a warm tranny (level check), right?

 

Yeah, the car was warm, and had just been driven for awhile. Seemed to be right smack dab in the middle of the full hot indicator...

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Ray87Z
-Vortec headed 350.
86 IROC w/ a cammed 305 TPI.
Formerly Ray86IROC.
www.inter-scape.com/Ray