88 Cherokee random skipping/high idle - JeepForum.com
 
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post #1 of 12 Old 07-12-2013, 05:01 AM Thread Starter
88jeepw
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88 Cherokee random skipping/high idle

Need help. 88 XJ we have cleaned the throttle body, replaced the TPS, new plugs, wires, distributor cap and rotor, and new fuel filter. It seems that after driving 15 minutes or so it will start random skipping. Tonight we drove over
town pushed in clutch got a high rpm the only thing that seemed to bring down Rpm was Turing the a/c on. Got to destination. Idle was normal. Drove home started out good. Little way down the road random skipping again.

Any ideas what to do next?

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post #2 of 12 Old 07-12-2013, 05:41 AM
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Did you adjust the new tPS?

If you own a Renix Jeep, you'll want to check this out.

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post #3 of 12 Old 07-12-2013, 11:23 AM Thread Starter
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Yes we printed off the instructions and followed that. Thanks.
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post #4 of 12 Old 07-12-2013, 02:56 PM
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Quote:
Originally Posted by 88jeepw View Post
Yes we printed off the instructions and followed that. Thanks.
Did you check it on the flat 3 wire connector or the square 4 wire connector? Did you do the sensor ground test beforehand?

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post #5 of 12 Old 07-12-2013, 04:49 PM Thread Starter
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We did the test on the 3 wire connector and he did do ground test. Thanks for your help. All help is appreciated.
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post #6 of 12 Old 07-12-2013, 05:32 PM
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Define "skipping".

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post #7 of 12 Old 07-12-2013, 05:57 PM Thread Starter
88jeepw
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You can be going along fine and all of a sudden it will skip (misfire). An occasional miss when not in a pull.
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post #8 of 12 Old 07-12-2013, 07:00 PM
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Like a total cutout? Not just a single cylinder miss?

You have an 88. Ever do the C101 cleaning or ground refreshing and connector refreshing?

If not, click on the link below and see posts 1,2,3, and 4.

http://www.cherokeeforum.com/f51/cru...x-tips-153657/

If you own a Renix Jeep, you'll want to check this out.

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post #9 of 12 Old 07-12-2013, 07:09 PM Thread Starter
88jeepw
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Not really a total cut out. Tonight we plugged the EGR valve drove for about 30 minutes or so no problem. Will drive it more tomorrow. Also will look at the grounds. Thank you so much for your help. Will try these things and repost.
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post #10 of 12 Old 07-12-2013, 07:11 PM
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How did you plug the EGR? Just the vacuum line?

If you own a Renix Jeep, you'll want to check this out.

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post #11 of 12 Old 07-12-2013, 07:29 PM Thread Starter
88jeepw
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Quote:
Originally Posted by cruiser54
How did you plug the EGR? Just the vacuum line?
Yes just the vacuum.
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post #12 of 12 Old 07-12-2013, 08:13 PM
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Quote:
Originally Posted by 88jeepw View Post
Yes just the vacuum.
See how that works. In the meantime, REFRESH the grounds. Don't just look at tehm. The other procedures can reap benefits as well. Eliminate known issues.

If you own a Renix Jeep, you'll want to check this out.

An index to over 30 write-ups can be found in the link below

www.cruiser54.com

My Jeep Technical Photos

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