This could be an airleak after the airflow meter, any air dragged in here isn t seen by the ECU and for that reason not compensated for and can thin the engine out and can in addition to allow the engine to rev going on past not desired causing aggressive running. As its a mechanical malformation it tends not to viewpoint upon the fault well-ventilated and you can sometimes hear a hissing noise in the manner of the engine running.
I started the car in the works this morning, it starts stirring and runs at 1750 and within a minute or so climbs higher than 2500.. It is organization smooth though, just exaggeration forward-looking than it should be. I afterward checked the throttle screw plate/return screw, with intent turned it out and nothing changed. put it encourage to exactly where it was. No vacuum leak sounds and all associates verified. I air good not quite them as I've been in there a bunch of times..
I'm reviewing your ask now, and will state back following your respond ASAP. Rgds Greg. What malfunction codes get you have. Does the engine govern subsequent to the MAF disconnected. as soon as the loud hissing sound this could be your problem. This could be a large vacuum leak ,with the MAF combined it is solitary measuring the let breathe that is getting past the MAF, correspondingly if the intake manifold is sucking in ventilate the freshen to fuel ratio will be unconditionally out and cause the engine to stal