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TH 400 keep downshifting into 2nd
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ibew728ed
New User
| Posts: 3
| Joined: 05/04
Posted: 05/25/04
06:50 PM
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i have a 89 k5 blazer. 350,tbi,205,14bolt W/488 gears,etc.. my truck wants to #### to 2nd gear at any speed over 40. at any speed when i let off the throtle it will shift into 3rd but as soon as i give it any throtle at all, even just enough to keep my speed at a constant,it goes right to 2nd. the tranny is a new rebuilt w/ a shift kit. it has b/m trickshift fluid, it also has no kickdown cable. the trans and case both came out of an 83' 1 ton dually 4x4. it does have the vacuum line hooked up to a manifold port. ANY help would be greatly appreciated. I am aching to get back in the mud.
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f4wdking
New User
| Posts: 4
| Joined: 05/04
Posted: 05/30/04
10:45 PM
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INTERESTING PROBLEM SOUNDS LIKE THERE IS SOMETHING INTERNALLY WRONG WITH YOUR TRANNY--VALVE BODY OR SOMETHING BUT I REALLY DON'T KNOW. GOT A WARRANTY ON YOUR REBUILD?
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ibew728ed
New User
| Posts: 3
| Joined: 05/04
Posted: 06/23/04
04:01 PM
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thanks for trying to help. no such luck on the warr. it was rebuilt,then sat for over a year.
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guidolyons
Enthusiast
| Posts: 365
| Joined: 11/03
Posted: 06/23/04
06:31 PM
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Did it have a TV cable or kickdown linkage in the donor truck? It might be a linkage adjustment out of whack? I'm not really have that much experience with auto trannies, but that's why I like a manual tranny...
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Posted: 06/30/04
09:27 PM
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Trash in your valve body or your modulator is out of adjustment.
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