i have misfire codes on 2,4,6 and if i try to go over 40 the rev limiter kicks in. CEL/MIL light is flashing or always on. trying to get it in for service next week, any suggestions before hand? i have always had a problem with the #6 misfireing and oil on the plug threads.

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2003 Renegade 4X4
3.7l
roof lightbar
front brush guard
everthing else is stock for now

New plugs all around? And/or Coils? I had to replace my #1 Ignition Coil because it was mis-firing.

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<b>--PHIL--</b>
<i>(Lift, Wheels, Tires, Skids, U Know...)</i>
<b>L.O.S.T MID-WEST MEMBER #057522 </b>

newer plugs they only have about 8,000 on em replaced the number 6 coil bt it still did it. i have oil on the plug threads of #6

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2003 Renegade 4X4
3.7l
roof lightbar
front brush guard
everthing else is stock for now

i had to same problem last year. Had oil on plugs and injectors. Took it in three times and all three times had same problem. They ran test and said #1 #5 #6 were misifres while driving. They didnt know what was causing it after changing plugs and cleaning injectors twice. I finally went to wal-mart and got some fuel injector cleaner gas additive and ran it through one time. Since then the problem hasnt been back so I guess the cleaner i used worked.