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what wont, what jeep, and what engine, and what trans.
like 2002 Jeep Wranger, with 5speed manual stick
or 2008 Jeep Wranger, with 6speed mt box
pretend we are blind, we are...
got PT 4wd. is transfer case i neutral>?
1994 Wrangler with 200,000 miles on the odometer. Similar problem here: Severe bucking and backfiring, and engine misses when traveling down the road. I did an entire tune-up (plugs, wires, distributor, distributor cap, and ignition coil), but got the same thing. I thought it was dirty fuel injectors, so, I poured a bottle in a few times on fill-ups. The final solution, was a bad alternator. My mechanic said it was sending voltage spikes to the computer, causing the engine bucking and back-firing problems.
Probably the CV joints just behind the brakes on each wheel. Try jacking the car up so that the wheel on that side is clear of the ground, grasp the wheel and rotate it back and forth. Do you get that noise? The joints are not repairable, just replace both sides.
I have the same Jeep and same problem. The engine was running rough. The Jeep dealer fixed a vacum problem in the manifold and they then decarbonized and cleaned the fuel injectors. After these repairs the idle problem began, it would spike to 2000 rpm while sitting at idle, sometimes it would slowly come down, sometimes I would have to tap the accelerator. I took it back in and they then replaced the throttle motor and reprogrammed the PCM (Power Control Module?) Still same problem. Now they suspect a another vacuum leak and I am taking it back in on Tuesday, will let you know what happens, $ 1,300 so far.