Hello, I have repaired exceeding 30000 vehicles in my career and I infatuation to ask you questions since I am not there in person to gather together facts, data, or to exam your vehicle. I may question you to statute psychoanalysis in my stead. If investigation is needed and you would rather not exploit testing, I can find the money for my best advice, Fuel pressure?
Might furthermore be worth checking the wiring and connector to the airflow meter for any signs of corrosion or damage. you can accomplish a quick deviation find if you unplug the meter and run the engine without it. if the engine condition is the same then chances are the meter or the connection to it is faulty. Its plus worth cleaning the MAF sensor wires, as they can get coated in the same way as dirt exceeding get older which next offsets the reading. Use some entry cleaner or brake cleaner to vaporizer onto the wires to sever the dirt upon no account be adjacent to the wires following whatever as they are completely fragile
have you looked into throttle body coking and/or combustion chamber/valve carbon buildup? are you stirring to date on every maintenance; spark plugs fuel filter pcv vlave etc? have you performed a visual inspection and listened to engine as it warms up and is warmed up? oftentimes in engine take effect many factors may cause the thesame symptom(s)