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  1. 420A Sporadic High idle only after driving for a while

    Ok I’m the morning I can crank my car (420a) and drive to work (1 hour drive) no problems at all But In the afternoons she starts to idle high jumping between 15-2300 RPMs, it usually starts when I’m stuck in stop and go traffic on 95. I’ve, replaced all sensors on the intake manifold, cleaned...
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