This could be an airleak after the airflow meter, any expose dragged in here isn t seen by the ECU and hence not compensated for and can thin the engine out and can furthermore permit the engine to rev occurring as soon as not desired causing gruff running. As its a mechanical irregularity it tends not to perspective upon the idiosyncrasy blithe and you can sometimes hear a hissing noise taking into consideration the engine running.
Might plus be worth checking the wiring and connector to the airflow meter for any signs of corrosion or damage. you can complete a quick defect locate 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 connection to it is faulty. Its plus worth cleaning the MAF sensor wires, as they can get coated later than dirt greater than era which after that offsets the reading. Use some admission cleaner or brake cleaner to vaporizer onto the wires to sever the dirt on no account adjoin the wires next all as they are utterly fragile
I don't have any check engine lights unless I unplug the MAF sensor. as soon as the MAF is plugged in after that the car will stall unless I put my foot on the accelerator. There is as well as an intermittent popping solid coming at idle.