Hello, I have repaired over 30000 vehicles in my career and I habit to ask you questions back I am not there in person to stockpile facts, data, or to test your vehicle. I may question you to conduct yourself psychotherapy in my stead. If examination is needed and you would rather not function testing, I can present my best advice, Fuel pressure?
I'm 1500 too high.. or more. It's boggling to me how this problem has morphed into various idle problems and has everyone perplexed.. or consequently it seems. I've been dealing past this back July.. makes me appreciate my 240z 10 become old more.My daddy owns an sc400 and its been in point of fact fine to him.. I'm having a hard era not inborn sharp when this purchase. I attain quality later its a fine car though. Motor sounds endearing and is super mild in imitation of doling out right.
This could be a large vacuum leak ,with the MAF related it is deserted measuring the air that is getting next the MAF, as a result if the intake manifold is sucking in expose the expose to fuel ratio will be utterly out and cause the engine to stall. If MAF is disconnected the engine goes into a limp measurement and lets the engine run. subsequent to carb cleaner spray spray in the place of the hissing later than the engine admin and taking into consideration you hear the engine stall or rev well along there is the leak ,could be a bad vacuum hose bad gasket on the manifold.