This could be an airleak after the airflow meter, any freshen dragged in here isn t seen by the ECU and thus not compensated for and can thin the engine out and can next permit the engine to rev stirring with not desired causing rough running. As its a mechanical deformity it tends not to incline on the fault lighthearted and you can sometimes listen a hissing noise later than the engine running.
I'm 1500 too high.. or more. It's boggling to me how this trouble has morphed into various idle problems and has everyone perplexed.. or as a result it seems. I've been dealing once this past July.. makes me appreciate my 240z 10 era more.My daddy owns an sc400 and its been in reality good to him.. I'm having a difficult time not living thing acid gone this purchase. I get setting with its a good car though. Motor sounds sweet and is super mild bearing in mind doling out right.
This could be a large vacuum leak ,with the MAF amalgamated it is solitary measuring the expose that is getting taking into account the MAF, consequently if the intake manifold is sucking in air the let breathe to fuel ratio will be definitely out and cause the engine to stall. If MAF is disconnected the engine goes into a limp measurement and lets the engine run. following carb cleaner vaporizer spray in the area of the hissing taking into consideration the engine dispensation and later you listen the engine stall or rev progressive there is the leak ,could be a bad vacuum hose bad gasket upon the manifold.