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Spyder Rough idle

Posted by Eclipselover, Apr 11, 2020

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  1. Eclipselover

    Eclipselover Probationary Member

    4
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    Joined Jun 23, 2018
    Winnipeg, MB, Canada
    Hey everyone I just had my 1997 Gst spyder taken into the shop for water pump replacement and timing belt

    the car starts... at idle it sounds like it’s surging. But when you raise it anywhere above 1000 rpm. It’s normal and the surging goes away totally normal

    Any ideas ?
     
  2. Eclipselover

    Eclipselover Probationary Member

    4
    0
    Joined Jun 23, 2018
    Winnipeg, MB, Canada
     
  3. ThunderChild

    ThunderChild Supporting VIP

    2,949
    1,017
    Joined Jan 5, 2012
    Rathdrum, Idaho
    If the water pump was just done it may have air trapped in the TB lines still, not allowing it to heat up the FIAV and causing surge. Ensure the coolant is topped off and keep running it, it should eventually purge all the air and stop surging.
     

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  4. motomattx

    motomattx Proven Member

    2,341
    984
    Joined Dec 9, 2010
    wampum, Pennsylvania
    First thing that I would check is that the timing marks line up perfectly, its very very easy to have the exhaust cam one tooth off after rotating the engine over once.
     

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