1978 Chevy Van Wiring Diagram

This could be an airleak after the airflow meter, any let breathe dragged in here isn t seen by the ECU and in view of that not compensated for and can thin the engine out and can as a consequence permit the engine to rev in the works in imitation of not desired causing severe running. As its a mechanical irregularity it tends not to face on the deviation spacious and you can sometimes listen a hissing noise following the engine running.

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Might plus be worth checking the wiring and connector to the airflow meter for any signs of corrosion or damage. you can realize a fast irregularity locate if you unplug the meter and control the engine without it. if the engine condition is the thesame next chances are the meter or the relationship to it is faulty. Its as well as worth cleaning the MAF sensor wires, as they can get coated taking into account dirt more than epoch which later offsets the reading. Use some approach cleaner or brake cleaner to spray can onto the wires to sever the dirt on no account be next to the wires in imitation of anything as they are agreed fragile

I don't have any check engine lights unless I unplug the MAF sensor. with the MAF is plugged in after that the car will stall unless I put my foot upon the accelerator. There is along with an intermittent popping hermetically sealed coming at idle.

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