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Re: 2001 Express van CNG, need help.
Posted to Technical Discussion Forum on 6/18/2005 1 Reply

Tony,

If the AFECM is operating correctly after 8 seconds of engine cranking with out starting the vehicle should switch to gas for start up. Also anytime a DTC sets in the AFECM it should switch to gas. You are right about AFECM only controlling fuel when o... Login to read more.

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