Hello, I have repaired higher than 30000 vehicles in my career and I habit to ask you questions in the past I am not there in person to store up facts, data, or to exam your vehicle. I may ask you to accomplish examination in my stead. If psychotherapy is needed and you would rather not statute testing, I can offer 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 realize a quick oddity locate if you unplug the meter and run the engine without it. if the engine condition is the same after that chances are the meter or the attachment to it is faulty. Its then worth cleaning the MAF sensor wires, as they can acquire coated later dirt higher than era which next offsets the reading. Use some approach cleaner or brake cleaner to spray can onto the wires to separate the dirt upon no account touch the wires taking into account whatever as they are completely fragile
have you looked into throttle body coking and/or combustion chamber/valve carbon buildup? are you up to date upon all maintenance; spark plugs fuel filter pcv vlave etc? have you performed a visual inspection and listened to engine as it warms occurring and is warmed up? oftentimes in engine take effect many factors may cause the similar symptom(s)