This could be an airleak after the airflow meter, any ventilate dragged in here isn t seen by the ECU and fittingly not compensated for and can lean the engine out and can furthermore allow the engine to rev stirring later than not desired causing unfriendly running. As its a mechanical malformation it tends not to approach on the defect blithe and you can sometimes listen a hissing noise later than the engine running.
Its in addition to worth getting the fuel pressure checked as if this is low due to a blocked filter or faulty regulator or even a in poor health pump will every upshot in insufficient fuel beast delivered to the engine. Might moreover be worth cleaning out the idle swiftness run motor / valve as these get clogged going on gone carbon and some brake cleaner washed through helps pardon things off.
Hello the TPS does have an effect upon switching the car into idle mode thus I'd recommend to create determined the throttle dish is 100% closed and not slightly beached taking into consideration carbon. and after that adjust the TPS thus that the IDL fasten is continuous to the E2 fasten like the throttle is closed, and admission circuit taking into consideration the throttle is just cracked. Don't badly affect just about any voltages, the IDL read is the essentially important one.