95 Cherokee Country 4.0l, Misfire at low RPM, in high gear - JeepForum.com
 
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post #1 of 6 Old 04-25-2013, 04:35 AM Thread Starter
RealityBomb
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1995 XJ Cherokee 
 
Join Date: Apr 2013
Location: meriden
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95 Cherokee Country 4.0l, Misfire at low RPM, in high gear

1995 Cherokee Country 4.0L Auto 4wd Transmission. I have replaced the plugs, wires, cap, and rotor. It seems like it improved a little, but still climbing hills, at around 40 - 45mph, in higher gears (4th or 5th)it feels like the engine is skipping. Flat road, or slightly downhill there seems to be much less misfiring. I'm scared that it might be timing chain. Any thoughts or ideas?

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post #2 of 6 Old 04-25-2013, 06:42 AM
M35A2
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Location: Monrovia
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Do a compression test and see what comes of it.

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post #3 of 6 Old 04-25-2013, 01:35 PM
BigBadWuf
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1992 XJ Cherokee 
 
Join Date: Mar 2013
Location: Greenville
Posts: 183
Mine did this, it turned out to be the vacume hose that comes from the back of the valvecover, and goes to the intake manifold right behind the throttle body. It had a big ol crack in it, and as soon as i touched it pretty much broke in two.
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post #4 of 6 Old 04-25-2013, 04:13 PM
BassMasterCHS
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1993 XJ Cherokee 
 
Join Date: Aug 2009
Location: Tampa
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2x on compression test. Mine was acting the same and I found out yesterday I have 30psi in #5.

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post #5 of 6 Old 04-26-2013, 04:15 AM Thread Starter
RealityBomb
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Thanks Guys, I'm going to check that vacuum hose tonight on my way to pick up the compression tester, from my nephew. I'll let you know what happens.
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post #6 of 6 Old 05-11-2013, 08:36 AM Thread Starter
RealityBomb
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Location: meriden
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Well it took some time to find, after checking all the vacuum lines, twice, compression testing all 6, changing fuel filter (can't hurt)...still no better & getting worse. Me & my nephew were staring blankly under the open hood, both at a loss for ideas. He said let's look at the rotor again, what its not the right one. Lift the cap, take off the rotor, which looks a little crispy for being new. I grabbed the distributer shaft, and it wiggled back & forth..uh not good. Turns out the whole problem was the bearing in the distributer was gone. Swap out the distributer, play around with everything that goes into the lovely little job. She's back to purring like a kitten...now I need to do shocks & rear brakes.
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