This could be an airleak after the airflow meter, any ventilate dragged in here isn t seen by the ECU and for that reason not compensated for and can thin the engine out and can as well as allow the engine to rev happening similar to not desired causing prickly running. As its a mechanical anomaly it tends not to approach on the defect lively and you can sometimes listen a hissing noise in the manner 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 suitably it seems. I've been dealing next this before July.. makes me appreciate my 240z 10 period more.My daddy owns an sc400 and its been truly fine to him.. I'm having a hard become old not visceral sharp once this purchase. I get atmosphere next its a good car though. Motor sounds gorgeous and is super smooth in the same way as paperwork right.
have you looked into throttle body coking and/or combustion chamber/valve carbon buildup? are you stirring to date on every maintenance; spark plugs fuel filter pcv vlave etc? have you performed a visual inspection and listened to engine as it warms occurring and is warmed up? oftentimes in engine put-on many factors may cause the thesame symptom(s)