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1990 Nissan Pathfinder

Question: rough idle when cold and will stall when put in drive

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jefftbe, 3.3L V6, Santa Ana, CA, October 14, 2009, 15:37
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 Rookie

if my ac is running the idle is worse, i replaced plugs recently w/o good gap tool,

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  • Answer #1

    Protech2989 October 14, 2009, 15:57
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     Journeyman

    Basics should be inspected for rough Idle. Proper Base Idle speed adjustment should be performed. Further inspection of Throttle body for carbon build up on throttle blade will cause a low Idle condition. Engine should be inspected for vacuum leaks. Ignition system should be inspected . Fuel pressure should be inspected for proper fuel pressure and volume. Your local repair shop should perform a full diagnostic and also inspect computer control system for trouble codes.

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  • Medium-star Best Answer
    mastertech154 October 14, 2009, 19:07
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     Journeyman

    Hello ,, sounds like pro tech hit it on the nail ,, clean that throtttle body

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