This could be an airleak after the airflow meter, any expose dragged in here isn t seen by the ECU and correspondingly not compensated for and can lean the engine out and can next allow the engine to rev taking place like not desired causing sharp running. As its a mechanical fault it tends not to slope upon the deviation well-ventilated and you can sometimes listen a hissing noise taking into consideration the engine running.
Might afterward be worth checking the wiring and connector to the airflow meter for any signs of corrosion or damage. you can attain a quick deformity locate if you unplug the meter and run the engine without it. if the engine condition is the similar then chances are the meter or the membership to it is faulty. Its as a consequence worth cleaning the MAF sensor wires, as they can acquire coated bearing in mind dirt over grow old which after that offsets the reading. Use some right of entry cleaner or brake cleaner to spray onto the wires to surgically remove the dirt on no account be next to the wires with all as they are enormously 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 going on and is warmed up? oftentimes in engine con many factors may cause the same symptom(s)