1998 Mystery Misfire - Jeep Wrangler Forum

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Old 02-28-2010, 07:39 PM   #1
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1998 Mystery Misfire

I am new to the WF, but I have a 1998 6 cyl automatic that has an intermittent misfire/backfire that only happens every few days, lasts only a few minuets then goes away. I have been to several mechanics (really good ones) I have replaced everything related to plugs, wires, distributor cap, map sensor, and I cant get it worked out. Afer every mechanic looks at it, I runs fine for a few days then back to the "burping". This is about to send me into therapy lol. Any help would be appreciated.

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Old 02-28-2010, 11:48 PM   #2
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Did you check the belts?

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Old 03-01-2010, 12:50 AM   #3

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Have you checked or replaced the throttle positioning sensor (TPS)?
Nothing is foolproof to a sufficiently talented fool.
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Old 03-01-2010, 01:18 AM   #4
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Or Clean the IAC??
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