TH400 Vacuum Modulator - Off-Road Forums & Discussion Groups
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post #1 of (permalink) Old 02-19-2002, 08:06 PM
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TH400 Vacuum Modulator

I recently swapped a trans and case from a 78 Wagoneer to a 79 Cherokee. My problem is shifting, not real sure if it is a smoked trans, or the vacuum modulator is out of adjustment. Does anybody know if there is a common setting for the adjustment, or turning the screw in increases, or decreases shift points? The reason for the swap, the wagoneer had front lock-out hubs with 3.54 gears and a mile marker part-time kit in the case

Dreaming about always turning left.
Reality.....Wheelin my 79 Cherokee.
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post #2 of (permalink) Old 03-25-2002, 09:36 AM
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Re: TH400 Vacuum Modulator

I Figured out the problem! I took the old vacuum Modulator off the old trans, and figured out that I had screwed up installing the new one. Much better now!
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