This could be an airleak after the airflow meter, any let breathe dragged in here isn t seen by the ECU and thus not compensated for and can thin the engine out and can plus allow the engine to rev in the works behind not desired causing harsh running. As its a mechanical deformity it tends not to face upon the deformity lighthearted and you can sometimes listen a hissing noise subsequently the engine running.
Might furthermore be worth checking the wiring and connector to the airflow meter for any signs of corrosion or damage. you can attain a quick fault find if you unplug the meter and control the engine without it. if the engine condition is the similar next chances are the meter or the link to it is faulty. Its next worth cleaning the MAF sensor wires, as they can get coated with dirt more than period which subsequently offsets the reading. Use some retrieve cleaner or brake cleaner to spray can onto the wires to cut off the dirt on no account be next to the wires bearing in mind anything as they are utterly fragile
Hello the TPS does have an effect on switching the car into idle mode hence I'd recommend to create sure the throttle dish is 100% closed and not slightly high and dry afterward carbon. and subsequently get used to the TPS so that the IDL fasten is continuous to the E2 stick like the throttle is closed, and admittance circuit once the throttle is just cracked. Don't cause problems about any voltages, the IDL get into is the in point of fact important one.