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Random misfire

   
Old 01-01-2013, 06:06 PM
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Default Random misfire
I have a 88 xj 4.0 with the renix system and it will randomly start misfiring... The first day it did it I could move the tps without any change to idle or anything so I changed the tps with no results... When it starts misfiring I can turn my jeep off for a little bit and it will run like nothing was wrong... I would really appreciate any help
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Old 01-02-2013, 02:36 PM
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Any idea on we're to start?
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Old 01-02-2013, 02:46 PM
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spark plugs
plug wires
cap and rotor

a misfire is going to be due to lack of spark. Start with these areas.
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Old 01-02-2013, 04:39 PM
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If it was any of these wouldn't it happen on a regular basis?
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Old 01-02-2013, 05:17 PM
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Originally Posted by xjshake
If it was any of these wouldn't it happen on a regular basis?
Not always, especially if it just started reacently.
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Old 01-02-2013, 05:35 PM
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Ok cool... Guess ill change them and see if that will help... I was worried of a bigger issue thank you
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