1979 cj7 tranny problems

1979 cj7 tranny problems

Moto69er

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Location
Aztec, NM
Vehicle(s)
1979 CJ7 stock V8 & drive tran,1978 CJ5 in the process of building from ground up,2003 Grand Cherokee Limited, 1993 Dodge Cummins built up to hall the jeeps
Hey jeepers im new this so bare with me i have a 79 CJ7 it is all stock with the v8 and auto trans the other day i was driving home from work and all of a sudden it shifted down to first and now it will not shift out of first when in drive it still works in reverse park and neutral and i have never had any slipping between gears or any other problems. I had someone tell me it could be a cracked vacume line but i checked that and they are all good . So any help would be greatly appreciated
 
If it is a turbo 400, check the vacuum modulator on the right side of the case.
 

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