This could be an airleak after the airflow meter, any air dragged in here isn t seen by the ECU and suitably not compensated for and can thin the engine out and can after that allow the engine to rev stirring following not desired causing uncompromising running. As its a mechanical deviation it tends not to twist upon the irregularity light and you can sometimes listen a hissing noise similar to 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 quick deformity locate if you unplug the meter and run the engine without it. if the engine condition is the similar later chances are the meter or the link to it is faulty. Its as well as worth cleaning the MAF sensor wires, as they can acquire coated subsequently dirt on top of time which then offsets the reading. Use some entre cleaner or brake cleaner to vaporizer onto the wires to cut off the dirt on no account be adjacent to the wires like all as they are unquestionably fragile
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