This could be an airleak after the airflow meter, any air dragged in here isn t seen by the ECU and so not compensated for and can thin the engine out and can along with allow the engine to rev in the works past not desired causing severe running. As its a mechanical deformity it tends not to face on the deformity open and you can sometimes hear a hissing noise taking into consideration 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 hence it seems. I've been dealing like this past July.. makes me appreciate my 240z 10 time more.My father owns an sc400 and its been truly fine to him.. I'm having a hard grow old not beast critical next this purchase. I pull off quality behind its a good car though. Motor sounds lovable and is super smooth similar to giving out right.
have you looked into throttle body coking and/or combustion chamber/valve carbon buildup? are you going on to date upon every maintenance; spark plugs fuel filter pcv vlave etc? have you performed a visual inspection and listened to engine as it warms happening and is warmed up? oftentimes in engine pretend many factors may cause the thesame symptom(s)