Check the hose clips for tightness and examine the trunking for any cracks or splits and then all the vacuum system, the small bore pipes and fittings for cracks and missing parts. The best pretension to find a leak is to have the engine management and hot and later spray can lighter gas /propane or brake cleaner re each joint in turn. If the engine rev s in the works 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 therefore it seems. I've been dealing past this back July.. makes me appreciate my 240z 10 epoch more.My daddy owns an sc400 and its been truly good to him.. I'm having a difficult epoch not brute mordant in the same way as this purchase. I accomplish atmosphere like its a good car though. Motor sounds lovely and is super smooth gone paperwork right.
This could be a large vacuum leak ,with the MAF united it is isolated measuring the air that is getting subsequent to the MAF, thus if the intake manifold is sucking in freshen the ventilate to fuel ratio will be categorically out and cause the engine to stall. If MAF is disconnected the engine goes into a limp measurement and lets the engine run. taking into consideration carb cleaner spray spray can in the area of the hissing next the engine processing and as soon as you listen the engine stall or rev difficult there is the leak ,could be a bad vacuum hose bad gasket on the manifold.