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Engine idels down on it's onw

Tiny
GOLDCHEVY
  • MEMBER
  • 1996 NISSAN PATHFINDER
  • 100 MILES
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.
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Tuesday, August 6th, 2013 AT 11:08 AM

5 Replies

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,709 POSTS
Have you checked for vacuum leaks and the idle air control valve (IAC)? The IAC is responsible for maintaining the engine idle.
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Tuesday, August 6th, 2013 AT 7:57 PM
Tiny
GOLDCHEVY
  • MEMBER
  • 3 POSTS
Thank you, I will check that.
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Wednesday, August 7th, 2013 AT 12:48 PM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,709 POSTS
Let me know what you find.
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Wednesday, August 7th, 2013 AT 3:28 PM
Tiny
GOLDCHEVY
  • MEMBER
  • 3 POSTS
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.
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Thursday, August 8th, 2013 AT 4:38 PM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,709 POSTS
Has the problem been taken care of? Let me know.
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Thursday, August 8th, 2013 AT 6:18 PM

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