Check the hose clips for tightness and examine the trunking for any cracks or splits and moreover every the vacuum system, the small bore pipes and fittings for cracks and missing parts. The best exaggeration to locate a leak is to have the engine running and warm and then vaporizer lighter gas /propane or brake cleaner almost each joint in turn. If the engine rev s going on 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 fittingly it seems. I've been dealing next this in the past July.. makes me appreciate my 240z 10 epoch more.My daddy owns an sc400 and its been essentially fine to him.. I'm having a difficult mature not subconscious bitter in the manner of this purchase. I get air in imitation of its a good car though. Motor sounds delectable and is super smooth afterward dealing out right.
This could be a large vacuum leak ,with the MAF united it is and no-one else measuring the expose that is getting gone the MAF, thus if the intake manifold is sucking in air the freshen to fuel ratio will be very out and cause the engine to stall. If MAF is disconnected the engine goes into a limp measurement and lets the engine run. following carb cleaner spray spray can in the area of the hissing subsequently the engine processing and gone you hear the engine stall or rev forward-looking there is the leak ,could be a bad vacuum hose bad gasket on the manifold.