This could be an airleak after the airflow meter, any let breathe dragged in here isn t seen by the ECU and for that reason not compensated for and can lean the engine out and can in addition to permit the engine to rev taking place similar to not desired causing sharp running. As its a mechanical malformation it tends not to twist on the irregularity blithe and you can sometimes hear a hissing noise bearing in mind the engine running.
Might with be worth checking the wiring and connector to the airflow meter for any signs of corrosion or damage. you can accomplish a quick aberration locate if you unplug the meter and govern the engine without it. if the engine condition is the thesame next chances are the meter or the connection to it is faulty. Its afterward worth cleaning the MAF sensor wires, as they can get coated in the manner of dirt greater than mature which after that offsets the reading. Use some read cleaner or brake cleaner to vaporizer onto the wires to separate the dirt on no account adjoin the wires in the manner of whatever as they are enormously fragile
Hello the TPS does have an effect upon switching the car into idle mode correspondingly I'd suggest to create distinct the throttle plate is 100% closed and not slightly stranded once carbon. and then become accustomed the TPS correspondingly that the IDL pin is continuous to the E2 fix following the throttle is closed, and get into circuit once the throttle is just cracked. Don't trouble roughly any voltages, the IDL right of entry is the essentially important one.