97 Ford F150 Fuel Pump Wiring Diagram

This could be an airleak after the airflow meter, any air dragged in here isn t seen by the ECU and therefore not compensated for and can thin the engine out and can in addition to permit the engine to rev up taking into account not desired causing sharp running. As its a mechanical oddity it tends not to point of view upon the deformity lively and you can sometimes hear a hissing noise when 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 tell you a tiny more more or less the misfortune history. It currently has a master tech certified idle expose manage valve and tps installed. without distressing anything, the last (used) ecu and my original, would run in the car without this symptom.

have you looked into throttle body coking and/or combustion chamber/valve carbon buildup? are you occurring to date on all maintenance; spark plugs fuel filter pcv vlave etc? have you performed a visual inspection and listened to engine as it warms in the works and is warmed up? oftentimes in engine pretend many factors may cause the same symptom(s)

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