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#1
03-01-2005, 01:21 PM
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'98 Wrangler 5 SPD 4x4 Idle Problem
The Jeep Idles Rough, But runs fine above 1000 rpm or so...The Check engine light is on And the computer is Showing a trouble Code For Multiple cylinder misfire...I tuned it up with a new Cap, Rotor, Wires, And plugs...I even substituted a new coil and its no better...I was thinking the Crank Sensor? Or maybe the Pick up in the Distributor?? Any help would be greatly appreciated...I can be reached at my e mail address as well [email protected]..Thanks!
I did erase the codes as I should with the external computer after I did the work, but it didnt run any better and the light came back on... 
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#3
03-01-2005, 05:05 PM
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Re: '98 Wrangler 5 SPD 4x4 Idle Problem
Try cleaning the inside of your throttle body with carb cleaner -- I was suprised how much dirt had built-up inside mine ('98 4.0L, cleaned it at ~90k). Pay particular attention to the idle airpath. Also, check your O2 sensors (simple voltage check in the Service Manual).
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#6
03-10-2005, 02:52 PM
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Check all the ground wires going to the engine.
What did the old spark plugs look like when you removed them? Any sign of a head gasket leak?
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