Question about 1999 Chevrolet C2500

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Cold rough idle and engine light flashed

It's a 2002 2500 chevy with a 6.0 only when it's cold does it rouch idle and shakes with engine light flasing after it warms up it seems to act fine

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  • Anonymous Mar 18, 2014

    rough idle on 2000 ford 4 0

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Spark plugs/wires might need to be replaced. Check your spark plug gaps and check your spark plug module harness connection on both sides of the engine. The check engine blinking indicates short/misfiring. If there is short in the harness, you can check it by moving around the wires close to connector one by one while the engine is running. You might need to remove and ckean the Throttle Body.

Posted on Dec 02, 2008

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