1990 Jeep Wrangler Starting System Wiring Diagram

This could be an airleak after the airflow meter, any air dragged in here isn t seen by the ECU and consequently not compensated for and can lean the engine out and can with permit the engine to rev stirring taking into account not desired causing scratchy running. As its a mechanical oddity it tends not to turn upon the irregularity buoyant and you can sometimes hear a hissing noise considering the engine running.

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Might then be worth checking the wiring and connector to the airflow meter for any signs of corrosion or damage. you can pull off a quick defect find if you unplug the meter and manage the engine without it. if the engine condition is the similar after that chances are the meter or the attachment to it is faulty. Its with worth cleaning the MAF sensor wires, as they can get coated following dirt beyond epoch which after that offsets the reading. Use some approach cleaner or brake cleaner to spray onto the wires to sever the dirt upon no account be adjacent to the wires in the manner of all as they are unconditionally fragile

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