engine idels down on it's onw

100 MILES
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GOLDCHEVY
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my1996 Nissan pathfinder runs great but when I go to a stop it idels down so far it almost dies then it idels up where it should be and every thing is o.k. no check engine light come on.or if I cruse around town or on freeway it will kick and buck a little and it don't miss fire eather while it is doing all of this. I replaced the fuel filter ,cap and rotor and it still does it.
Aug 6, 2013 at 4:08 AM
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JACOBANDNICKOLAS
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Have you checked for vacuum leaks and the idle air control valve (IAC)? The IAC is responsible for maintaining the engine idle.
Aug 6, 2013 at 12:57 PM
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GOLDCHEVY
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thank you , I will check that.
Aug 7, 2013 at 5:48 AM
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JACOBANDNICKOLAS
  • ✓Experienced Mechanic
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let me know what you find.
Aug 7, 2013 at 8:28 AM
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GOLDCHEVY
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Well, I went to the dealer and there was a knock sensor fault, and a had the wrong plugs in the Nissan, I had the Bosh plugs and I has been four years ago I replaced them. so I got the ngk that they use. so they eaid to do the plugs first.
Aug 8, 2013 at 9:38 AM
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JACOBANDNICKOLAS
  • ✓Experienced Mechanic
  • 110,246 POSTS
Has the problem been taken care of? Let me know.
Aug 8, 2013 at 11:18 AM
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