This could be an airleak after the airflow meter, any let breathe dragged in here isn t seen by the ECU and consequently not compensated for and can thin the engine out and can in addition to permit the engine to rev occurring similar to not desired causing sharp running. As its a mechanical oddity it tends not to turn upon the fault well-ventilated and you can sometimes listen a hissing noise subsequent to 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 when this back July.. makes me appreciate my 240z 10 mature more.My daddy owns an sc400 and its been really fine to him.. I'm having a difficult time not being bitter bearing in mind this purchase. I complete quality later its a fine car though. Motor sounds charming and is super smooth past government right.
have you looked into throttle body coking and/or combustion chamber/valve carbon buildup? are you occurring to date upon all maintenance; spark plugs fuel filter pcv vlave etc? have you performed a visual inspection and listened to engine as it warms taking place and is warmed up? oftentimes in engine affect many factors may cause the same symptom(s)