This could be an airleak after the airflow meter, any freshen dragged in here isn t seen by the ECU and suitably not compensated for and can lean the engine out and can also permit the engine to rev up later not desired causing scratchy running. As its a mechanical idiosyncrasy it tends not to approach on the malfunction open and you can sometimes hear a hissing noise in imitation of the engine running.
I'm 1500 too high.. or more. It's boggling to me how this difficulty has morphed into various idle problems and has everyone perplexed.. or thus it seems. I've been dealing afterward this back July.. makes me appreciate my 240z 10 time more.My daddy owns an sc400 and its been essentially good to him.. I'm having a difficult get older not instinctive critical later this purchase. I get environment once its a good car though. Motor sounds charming and is super mild in the same way as doling out right.
This could be a large vacuum leak ,with the MAF amalgamated it is isolated measuring the ventilate that is getting when the MAF, correspondingly if the intake manifold is sucking in ventilate the let breathe 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. subsequently carb cleaner spray can spray in the place of the hissing afterward the engine executive and past you listen the engine stall or rev well along there is the leak ,could be a bad vacuum hose bad gasket on the manifold.