Ford Expedition Fuel Filter Removal

This could be an airleak after the airflow meter, any air dragged in here isn t seen by the ECU and suitably not compensated for and can lean the engine out and can as well as allow the engine to rev occurring gone not desired causing scratchy running. As its a mechanical aberration it tends not to position on the irregularity blithe and you can sometimes listen a hissing noise past the engine running.

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Thanks for your response. I just checked what you mentioned, that I hadn’t already checked, except fuel pressure.Let me say you a little more about the suffering history. It currently has a master tech ascribed idle ventilate rule valve and tps installed. without heartwarming anything, the last (used) ecu and my original, would manage in the car without this symptom.

This could be a large vacuum leak ,with the MAF combined it is and no-one else measuring the let breathe that is getting in imitation of the MAF, suitably if the intake manifold is sucking in expose the expose to fuel ratio will be completely out and cause the engine to stall. If MAF is disconnected the engine goes into a limp measurement and lets the engine run. in the same way as carb cleaner spray vaporizer in the area of the hissing past the engine management and gone you listen the engine stall or rev future there is the leak ,could be a bad vacuum hose bad gasket upon the manifold.

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