Question about 1993 Dodge Intrepid

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Rough idle i have a 93 intrepid 3.5L plugs and wires wer done 4 months ago ,all 3 cats wer replaced,now has developed a rough idle.I have tryed some fule injector cleaner additive,checked vacume lines,checked for vac leaks around the intake,compression test was verry consistant,checked fuses,cleaned grounds,tested ing.wires with ohm meter,pulled plugs and placed in different cyl,did a ohm test on the tps,even pulled the front off to check if belt skipped a tooth,final check on codes was code 12 and 55 so i'm at a loss here was woundering if i could ask for a helping hand in guidance. thanks in advance.

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  • bob_kat Jun 02, 2008

    thanks for the tip i've done that and still doing it. any more ideas? thanks again.

  • bob_kat Jun 08, 2008

    thanks again folks i have solved the problem. After cleaning the throttle bodies i had too much air flow and then and only then i could notice the intake leak.So there was my problem hidden under a few others. thanks lasvegastech for your advice.its been fun , bye



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Make sure the trottle if free of carbon built if is not clean it with toot brush and carburetor cleaner

Posted on Jun 01, 2008

  • 2 more comments 
  • fernando arevalo Jun 02, 2008

    take the plug wires bak for warranty replacement some times they are defective i see that more than ones

  • fernando arevalo Jun 02, 2008

    do you have any codes present? with check engine light?

    if you do what is it

    also regap the spark plugs 10 tounsands of an inch to see if this help but if you have codes present take care of codes first

    and before you do any of this check if your car has a egr valve if it does check it inside for posible stuck open if it is stuck cleane it or replace it, also make sure the egr vacium hose dont have vacium present unplug the vacium hose at egr and see if any diference

  • fernando arevalo Jun 02, 2008

    when i said 10 tousand of an inch i mean have the gap more open like gi it a 10k of an inch more gap

  • fernando arevalo Jun 08, 2008

    you are very welcome bob kat, if you can rate this answer as fixya, i will really apreciate, but if not, it is ok i'm not sure how this fixya webpage works yet i'm new here but been in the autoimotive for over 20 yrs, a feel good when people like you thanks me, that make me feel good, specially when one of my sujestions help to fix your problem.



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