This could be an airleak after the airflow meter, any expose dragged in here isn t seen by the ECU and consequently not compensated for and can lean the engine out and can moreover permit the engine to rev occurring when not desired causing rough running. As its a mechanical aberration it tends not to face upon the idiosyncrasy buoyant and you can sometimes listen a hissing noise subsequently the engine running.
I'm 1500 too high.. or more. It's boggling to me how this suffering has morphed into various idle problems and has everyone perplexed.. or for that reason it seems. I've been dealing with this previously July.. makes me appreciate my 240z 10 grow old more.My dad owns an sc400 and its been in reality good to him.. I'm having a difficult time not living thing sour similar to this purchase. I reach setting gone its a fine car though. Motor sounds delightful and is super mild in imitation of dealing out right.
have you looked into throttle body coking and/or combustion chamber/valve carbon buildup? are you up 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 stirring and is warmed up? oftentimes in engine affect many factors may cause the same symptom(s)