1991 Bmw 525i Fuse Box Layout

This could be an airleak after the airflow meter, any expose dragged in here isn t seen by the ECU and so not compensated for and can lean the engine out and can next permit the engine to rev taking place subsequently not desired causing harsh running. As its a mechanical irregularity it tends not to direction upon the irregularity spacious and you can sometimes hear a hissing noise taking into consideration the engine running.


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Might next be worth checking the wiring and connector to the airflow meter for any signs of corrosion or damage. you can pull off a fast idiosyncrasy locate if you unplug the meter and govern the engine without it. if the engine condition is the similar then chances are the meter or the attachment to it is faulty. Its next worth cleaning the MAF sensor wires, as they can acquire coated when dirt higher than become old which next offsets the reading. Use some entre cleaner or brake cleaner to vaporizer onto the wires to cut off the dirt upon no account touch the wires considering all as they are utterly fragile



have you looked into throttle body coking and/or combustion chamber/valve carbon buildup? are you taking place 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 happening and is warmed up? oftentimes in engine con many factors may cause the thesame symptom(s)



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