Th 350 Question help please!!!!! fast
07-10-2009, 06:27 AM
#1
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Th 350 Question help please!!!!! fast ok so here is the deal i got this car off my buddy its a 84 z with a 383 tci th350 full reverse manual valve body art car 4k stall...so here is the deal the trans was new in the crate its been sitting in the crate for a few years in his garage i finally get the car running and i take it down the road and it shifts fine first to second and then i shift it to third and it doesnt shift just stays in second???? i thought maybe fluid level but i tried adding more and it doesnt change a thing any suggestions would be greatly appreciated
07-11-2009, 10:14 PM
#7
I've seen this one before....
TH350 RMVB, no third gear, triple checked shifter adjustment, all OK.
Same exact symptoms you have. Normally I would tell you to plug a pressure gauge into the 3rd gear port and look for pressure but you're not going to have it.
You can verify it by pulling the VB but the fix is going to be bending the "S-clip" to make the manual valve go slightly further to the rear.
Measure the distance the manual valve protrudes out the rear of the VB with dial calipers while in the 3rd gear (normally manual low) position.
Bend the clip to give it another .050" or so.
If you want to verify it, you can measure the distance as above, drop the VB, put the manual valve back to the measurement you got, and look to see if it is allowing line pressure into the 3rd gear passage.
TH350 RMVB, no third gear, triple checked shifter adjustment, all OK.
Same exact symptoms you have. Normally I would tell you to plug a pressure gauge into the 3rd gear port and look for pressure but you're not going to have it.
You can verify it by pulling the VB but the fix is going to be bending the "S-clip" to make the manual valve go slightly further to the rear.
Measure the distance the manual valve protrudes out the rear of the VB with dial calipers while in the 3rd gear (normally manual low) position.
Bend the clip to give it another .050" or so.
If you want to verify it, you can measure the distance as above, drop the VB, put the manual valve back to the measurement you got, and look to see if it is allowing line pressure into the 3rd gear passage.