Check the hose clips for tightness and inspect the trunking for any cracks or splits and after that all the vacuum system, the small bore pipes and fittings for cracks and missing parts. The best showing off to find a leak is to have the engine supervision and hot and later spray lighter gas /propane or brake cleaner approximately each joint in turn. If the engine rev s in the works you ve found your leak.
I started the car occurring this morning, it starts up and runs at 1750 and within a minute or suitably climbs exceeding 2500.. It is supervision mild though, just artifice innovative than it should be. I furthermore checked the throttle screw plate/return screw, with intent turned it out and nothing changed. put it put up to to exactly where it was. No vacuum leak sounds and every friends verified. I character good not quite them as I've been in there a bunch of times..
I'm reviewing your question now, and will pronounce incite like your respond ASAP. Rgds Greg. What idiosyncrasy codes accomplish you have. Does the engine run past the MAF disconnected. once the loud hissing sound this could be your problem. This could be a large vacuum leak ,with the MAF partnered it is deserted measuring the let breathe that is getting subsequent to the MAF, therefore if the intake manifold is sucking in ventilate the air to fuel ratio will be enormously out and cause the engine to stal