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Thread: help is needed

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  1. #1
    Join Date
    Aug 2009
    Posts
    21
    the car is running but in low RPM it will be in rich fuel . in high RPM it will be lean

    in starting the engine i show hold the starter for few seconds then it will run or some times it will blow a big sound

    when the engine is running , it will be Idlling like a big cam.

  2. #2
    Join Date
    Nov 2003
    Location
    Denton Texas
    Posts
    20,540
    Sounds like bad oxygen sensors. Did you get the tune updated for the larger engine?
    See my truck data in the "My Garage" section here... http://www.ls1truck.com/forums/my-ga...tml#post191709

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