Having problems with your 1985 Jeep CJ7 ?

I have a 1985 CJ7 6 cyl with a 5 speed manual transmission. While on the interstate in 5th gear it all of a sudden wouldn't accelerate anymore. I downshifted through all gears and it was the same. There were no sounds at all when it happened. Reverse still works fine though. There is no grinding sound when putting it into gear. After letting it sit for a few days it seemed to move better but I haven't tried moving it more than a few feet since I don't know what is wrong with it.

Posted / edited by AnonymousUser on : 12-03-2018

Answers :

Your narration is short on mechanical clues. Is the engine running "flat" or is the clutch slipping? Do you / did you smell anything when it happened?
I'd check two things...clutch and catalytic converter. If clutch is slipping it will reduce available power to the wheels. a bad cat can do that too by restricting the exhaust. Easy way to check a clutch is by driving about 25mph in third gear and floor it. If the engine responds and revs but the vehicle does not, then the clutch is bad. Otherwise, you need to do some testing to see what's going on but it can be just about anything at this point. Normally if the converter is blocked you can hear it wheezing a bit.
As I said, you didn't give enough real detail but these are my best guesses.
Repair Help & Product Troubleshooting for 1985 Jeep CJ7

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