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  1. Need help with Idle control P0171

    I4/I5 Engine & Drivetrain
    I have been working on a couple of problems on my daughters Colorado 2007 I4, 2.9. We bought it about 4mo ago and have battled a Crank no start issue since Day 1. Things weren't too bad until we had the A/C Coil and Heater core replaced. then it would die when slowing with the clutch in. Idle...