Check the hose clips for tightness and examine the trunking for any cracks or splits and plus all the vacuum system, the little bore pipes and fittings for cracks and missing parts. The best exaggeration to locate a leak is to have the engine handing out and hot and next vaporizer lighter gas /propane or brake cleaner more or less each joint in turn. If the engine rev s happening you ve found your leak.
I'm 1500 too high.. or more. It's boggling to me how this burden has morphed into various idle problems and has everyone perplexed.. or hence it seems. I've been dealing following this past July.. makes me appreciate my 240z 10 epoch more.My dad owns an sc400 and its been in point of fact fine to him.. I'm having a hard grow old not creature caustic later than this purchase. I get environment in imitation of its a fine car though. Motor sounds lovable and is super smooth following meting out right.
have you looked into throttle body coking and/or combustion chamber/valve carbon buildup? are you in the works 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 stirring and is warmed up? oftentimes in engine comport yourself many factors may cause the same symptom(s)