Check the hose clips for tightness and inspect the trunking for any cracks or splits and with all the vacuum system, the little bore pipes and fittings for cracks and missing parts. The best way to locate a leak is to have the engine presidency and warm and after that spray can lighter gas /propane or brake cleaner nearly each joint in turn. If the engine rev s stirring you ve found your leak.
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 consequently it seems. I've been dealing next this past July.. makes me appreciate my 240z 10 epoch more.My daddy owns an sc400 and its been truly fine to him.. I'm having a hard mature not beast sharp later this purchase. I get feel similar to its a fine car though. Motor sounds sweet and is super serene past handing out right.
have you looked into throttle body coking and/or combustion chamber/valve carbon buildup? are you going on 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 going on and is warmed up? oftentimes in engine be active many factors may cause the similar symptom(s)