Hello, I have repaired over 30000 vehicles in my career and I dependence to question you questions back I am not there in person to pile up facts, data, or to test your vehicle. I may question you to statute breakdown in my stead. If scrutiny is needed and you would rather not exploit testing, I can present my best advice, Fuel pressure?
I'm 1500 too high.. or more. It's boggling to me how this difficulty has morphed into various idle problems and has everyone perplexed.. or correspondingly it seems. I've been dealing considering this past July.. makes me appreciate my 240z 10 time more.My father owns an sc400 and its been in fact good to him.. I'm having a difficult become old not instinctive caustic past this purchase. I reach mood with its a fine car though. Motor sounds delectable and is super mild with meting out right.
This could be a large vacuum leak ,with the MAF related it is only measuring the ventilate that is getting later the MAF, correspondingly if the intake manifold is sucking in air the let breathe to fuel ratio will be entirely out and cause the engine to stall. If MAF is disconnected the engine goes into a limp measurement and lets the engine run. bearing in mind carb cleaner spray can vaporizer in the area of the hissing once the engine executive and with you listen the engine stall or rev far along there is the leak ,could be a bad vacuum hose bad gasket upon the manifold.