rear end or trans problem??
I just bought a 1995 junker zj with 4.0 from a guy. With 230K miles. Known problems. Valve cover gasket needs to be replaced. Both pinion sells need replacing. And some cosmetic stuff. The one problem I can't figure out is.. when I go up a hill either the trans is slipping on something is going on in the rear end. Because it feels like something is slipping and catching and you'll feel a hesitation. Also when this happens the rpms will jump up 100-200 then fall back down. It also does it when hour crushing at about 55 and the rpms are around 1500-1750 but it won't do it if your going 60 or above. With that being said I am hearing a whine from the rear end. The faster I go the louder it gets and it seems like when I let off the pedal it goes away. Especially at highway speeds. Thanks for the help in advanced
I had the same noise in my zj and I replaced the rear ring and pinion gears and both pinion bearings, and the noise went away. But the slipping sounds like the tranny, but I'm not for sure someone with more experience with trannys well chime in soon.
If you haven't done so yet, replace the tranny filter, gasket and fluid. Does wonders to high mileage ZJs.
WARNING: Lo barato sale caro (Cheap things often lead to more expense)
A little update. I Took the stock exhaust off and put on a glass pack. Well apparently what I thought was a tranny/rear end problem is turned out to be misfiring. Whenever I goto pass someone and it goes into passing gear. The rpms go from 3000-3500 and it starts ti misfire bad and the Jeep bucks and backfires. Any idea what if is? Its starting to drive me nuts. Because there is no codes being thrown
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