This could be an airleak after the airflow meter, any let breathe dragged in here isn t seen by the ECU and therefore not compensated for and can lean the engine out and can after that allow the engine to rev taking place in imitation of not desired causing aggressive running. As its a mechanical irregularity it tends not to approach on the irregularity buoyant 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 trouble has morphed into various idle problems and has everyone perplexed.. or for that reason it seems. I've been dealing afterward this since July.. makes me appreciate my 240z 10 times more.My daddy owns an sc400 and its been truly good to him.. I'm having a difficult epoch not instinctive critical once this purchase. I get feel similar to its a good car though. Motor sounds attractive and is super smooth in the same way as giving out right.
have you looked into throttle body coking and/or combustion chamber/valve carbon buildup? are you taking place 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 occurring and is warmed up? oftentimes in engine performance many factors may cause the similar symptom(s)