'92 Nissan 4 cyl problems

Discussion in 'Nissan Truck Forum' started by mark98012, Feb 17, 2009.

  1. mark98012

    mark98012 New Member

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    My son has a '92 nissan, 4 cyl, 2WD that starts fine with normal high idle, after warmup it cycles from high idle to almost stall and then back to high idle, then stall (continuous cycle). Motor was replaced last year and the cycling was minor but as of late it is nasty, didn't do it with previous motor. (I don't see him that much). I figure it must be a harness problem, but I just need someplace to start. Any help would be appreciated. Thanks,Mark
     
  2. bradrhale

    bradrhale Senior Member

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    could be vacuum or EGR related. get a can of cleaner and shoot around the rubber lines and intake to find any vac leaks.
     
  3. rockwall722

    rockwall722 New Member

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    could be IAC. spray some carb cleaner in the throttle body and clean it really good. i had the same issue and cleaning the throttle body and iac valve fixed it.
     

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