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Old 03-13-2019, 09:31 PM   #6
rcazwillis
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Join Date: Aug 2013
Location: Fort Worth, TX
Posts: 309
Re: TH400 No 2-3 Shift

Quote:
Originally Posted by AussieinNC View Post
Direct drum seal issues will give you slow to react Reverse and no 3rd....

Did you air test it on the bench?

I don't recall. It has been 6 months. I always have in the past. Wondering without the case plugged if I ruined the clutch pack.

Plan:
1. Check vacuum at modulator, modulator, and valve. Shift 1-2 is good, so don't expect to find anything.
2. Check pressures. Expect low pressure in D.
3. Pull valve body, check 2-3 valve and all other. Wondering if I put it together wrong.
4. Pull trans, tear it down and and rebuild. Expect to find problem with direct clutch pack, whether a seal or burnt clutches.
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