This could be an airleak after the airflow meter, any air dragged in here isn t seen by the ECU and appropriately not compensated for and can thin the engine out and can after that permit the engine to rev stirring later than not desired causing severe running. As its a mechanical idiosyncrasy it tends not to outlook upon the irregularity spacious and you can sometimes listen a hissing noise taking into account 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 oddity find if you unplug the meter and run the engine without it. if the engine condition is the similar next chances are the meter or the connection to it is faulty. Its as a consequence worth cleaning the MAF sensor wires, as they can acquire coated in the manner of dirt higher than times which next offsets the reading. Use some approach cleaner or brake cleaner to spray can onto the wires to separate the dirt on no account lie alongside the wires following whatever as they are enormously fragile
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