This could be an airleak after the airflow meter, any expose dragged in here isn t seen by the ECU and therefore not compensated for and can lean the engine out and can plus allow the engine to rev up in imitation of not desired causing argumentative running. As its a mechanical oddity it tends not to tilt upon the oddity buoyant and you can sometimes hear a hissing noise bearing in mind the engine running.
Might in addition to be worth checking the wiring and connector to the airflow meter for any signs of corrosion or damage. you can complete a fast idiosyncrasy locate if you unplug the meter and run the engine without it. if the engine condition is the similar after that chances are the meter or the link to it is faulty. Its afterward worth cleaning the MAF sensor wires, as they can acquire coated as soon as dirt over era which next offsets the reading. Use some open cleaner or brake cleaner to spray onto the wires to cut off the dirt upon no account be next to the wires subsequent to anything as they are very fragile
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