This could be an airleak after the airflow meter, any freshen dragged in here isn t seen by the ECU and suitably not compensated for and can lean the engine out and can as well as allow the engine to rev occurring like not desired causing argumentative running. As its a mechanical aberration it tends not to position on the idiosyncrasy open and you can sometimes hear a hissing noise afterward the engine running.
Might after that be worth checking the wiring and connector to the airflow meter for any signs of corrosion or damage. you can realize a fast malformation find if you unplug the meter and direct the engine without it. if the engine condition is the same later chances are the meter or the link to it is faulty. Its as a consequence worth cleaning the MAF sensor wires, as they can acquire coated in imitation of dirt more than era which next offsets the reading. Use some gate cleaner or brake cleaner to spray can onto the wires to cut off the dirt upon no account lie alongside the wires similar to all as they are agreed fragile
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