Hello, I have repaired higher than 30000 vehicles in my career and I compulsion to question you questions since I am not there in person to accrue facts, data, or to exam your vehicle. I may ask you to undertaking psychoanalysis in my stead. If psychiatry is needed and you would rather not put it on testing, I can meet the expense of my best advice, Fuel pressure?
Might along with be worth checking the wiring and connector to the airflow meter for any signs of corrosion or damage. you can do a fast deviation find if you unplug the meter and control the engine without it. if the engine condition is the same subsequently chances are the meter or the relationship to it is faulty. Its with worth cleaning the MAF sensor wires, as they can get coated subsequently dirt higher than time which after that offsets the reading. Use some right of entry cleaner or brake cleaner to vaporizer onto the wires to sever the dirt upon no account be next to the wires behind everything as they are unconditionally fragile
have you looked into throttle body coking and/or combustion chamber/valve carbon buildup? are you occurring to date upon every 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 piece of legislation many factors may cause the similar symptom(s)
Picture Schematics for 2004 bmw z4 wiring diagram free picture
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