This could be an airleak after the airflow meter, any ventilate dragged in here isn t seen by the ECU and consequently not compensated for and can lean the engine out and can also permit the engine to rev happening like not desired causing rude running. As its a mechanical anomaly it tends not to viewpoint on the deviation well-ventilated and you can sometimes listen a hissing noise considering the engine running.
Might also be worth checking the wiring and connector to the airflow meter for any signs of corrosion or damage. you can reach a quick deformity locate if you unplug the meter and govern the engine without it. if the engine condition is the similar subsequently 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 epoch which next offsets the reading. Use some right of entry cleaner or brake cleaner to vaporizer onto the wires to surgically remove the dirt upon no account be adjacent to the wires in the manner of whatever as they are categorically fragile
have you looked into throttle body coking and/or combustion chamber/valve carbon buildup? are you in the works 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 taking place and is warmed up? oftentimes in engine comport yourself many factors may cause the similar symptom(s)