Hello, I have repaired exceeding 30000 vehicles in my career and I dependence to question you questions back I am not there in person to assemble facts, data, or to exam your vehicle. I may question you to ham it up examination in my stead. If psychiatry is needed and you would rather not fake testing, I can give 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 thus it seems. I've been dealing taking into account this previously July.. makes me appreciate my 240z 10 era more.My dad owns an sc400 and its been in point of fact good to him.. I'm having a hard time not monster cutting similar to this purchase. I pull off air like its a good car though. Motor sounds charming and is super mild in the manner of direction right.
This could be a large vacuum leak ,with the MAF linked it is solitary measuring the ventilate that is getting similar to the MAF, in view of that if the intake manifold is sucking in ventilate the freshen to fuel ratio will be unconditionally out and cause the engine to stall. If MAF is disconnected the engine goes into a limp measurement and lets the engine run. next carb cleaner vaporizer spray in the area of the hissing considering the engine admin and taking into consideration you hear the engine stall or rev far along there is the leak ,could be a bad vacuum hose bad gasket upon the manifold.