This could be an airleak after the airflow meter, any ventilate dragged in here isn t seen by the ECU and hence not compensated for and can lean the engine out and can in addition to permit the engine to rev stirring in the manner of not desired causing aggressive running. As its a mechanical idiosyncrasy it tends not to position on the defect open and you can sometimes listen a hissing noise with 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 correspondingly it seems. I've been dealing taking into consideration this since July.. makes me appreciate my 240z 10 grow old more.My father owns an sc400 and its been in reality good to him.. I'm having a difficult become old not brute barbed like this purchase. I pull off feel subsequent to its a fine car though. Motor sounds sweet and is super mild later doling out right.
have you looked into throttle body coking and/or combustion chamber/valve carbon buildup? are you in the works to date on all maintenance; spark plugs fuel filter pcv vlave etc? have you performed a visual inspection and listened to engine as it warms in the works and is warmed up? oftentimes in engine put it on many factors may cause the same symptom(s)