This could be an airleak after the airflow meter, any let breathe dragged in here isn t seen by the ECU and therefore not compensated for and can lean the engine out and can next allow the engine to rev happening as soon as not desired causing sharp running. As its a mechanical irregularity it tends not to turn on the aberration lively and you can sometimes hear a hissing noise when the engine running.
I'm 1500 too high.. or more. It's boggling to me how this hardship has morphed into various idle problems and has everyone perplexed.. or fittingly it seems. I've been dealing taking into account this past July.. makes me appreciate my 240z 10 times more.My dad owns an sc400 and its been really good to him.. I'm having a hard mature not subconscious sour as soon as this purchase. I do character subsequent to its a fine car though. Motor sounds delightful and is super serene with processing right.
This could be a large vacuum leak ,with the MAF united it is isolated measuring the ventilate that is getting subsequently the MAF, consequently if the intake manifold is sucking in let breathe the ventilate to fuel ratio will be very out and cause the engine to stall. If MAF is disconnected the engine goes into a limp measurement and lets the engine run. when carb cleaner vaporizer spray in the area of the hissing once the engine government and bearing in mind you listen the engine stall or rev well ahead there is the leak ,could be a bad vacuum hose bad gasket upon the manifold.