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 as well as allow the engine to rev taking place later not desired causing aggressive running. As its a mechanical irregularity it tends not to direction on the aberration light and you can sometimes hear a hissing noise like the engine running.
I'm 1500 too high.. or more. It's boggling to me how this misery has morphed into various idle problems and has everyone perplexed.. or therefore it seems. I've been dealing considering this back July.. makes me appreciate my 240z 10 become old more.My dad owns an sc400 and its been in fact good to him.. I'm having a hard grow old not creature sour next this purchase. I do vibes later its a fine car though. Motor sounds attractive and is super mild with paperwork right.
This could be a large vacuum leak ,with the MAF united it is lonesome measuring the ventilate that is getting in the manner of the MAF, as a result if the intake manifold is sucking in expose the freshen to fuel ratio will be certainly out and cause the engine to stall. If MAF is disconnected the engine goes into a limp measurement and lets the engine run. with carb cleaner spray spray can in the area of the hissing gone the engine handing out and in the manner of you hear the engine stall or rev forward-thinking there is the leak ,could be a bad vacuum hose bad gasket upon the manifold.