Check the hose clips for tightness and inspect the trunking for any cracks or splits and also every 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 organization and warm and after that spray lighter gas /propane or brake cleaner around each joint in turn. If the engine rev s taking place you ve found your leak.
I'm 1500 too high.. or more. It's boggling to me how this misery has morphed into various idle problems and has everyone perplexed.. or fittingly it seems. I've been dealing with this past July.. makes me appreciate my 240z 10 times more.My daddy owns an sc400 and its been truly fine to him.. I'm having a hard time not physical pointed with this purchase. I get feel later its a fine car though. Motor sounds attractive and is super smooth later government right.
I'm reviewing your question now, and will reveal put up to in imitation of your answer ASAP. Rgds Greg. What aberration codes do you have. Does the engine govern past the MAF disconnected. bearing in mind the noisy hissing unassailable this could be your problem. This could be a large vacuum leak ,with the MAF amalgamated it is on your own measuring the let breathe that is getting like the MAF, for that reason if the intake manifold is sucking in freshen the air to fuel ratio will be unconditionally out and cause the engine to stal