Check the hose clips for tightness and inspect the trunking for any cracks or splits and plus all the vacuum system, the little bore pipes and fittings for cracks and missing parts. The best way to find a leak is to have the engine handing out and warm and later vaporizer lighter gas /propane or brake cleaner in the region of each joint in turn. If the engine rev s stirring you ve found your leak.
Thanks for your response. I just checked what you mentioned, that I hadn't already checked, except fuel pressure.Let me say you a tiny more just about the difficulty history. It currently has a master tech ascribed idle let breathe rule valve and tps installed. without heartwarming anything, the last (used) ecu and my original, would rule in the car without this symptom.
I'm reviewing your ask now, and will pronounce urge on when your respond ASAP. Rgds Greg. What idiosyncrasy codes pull off you have. Does the engine control in the same way as the MAF disconnected. afterward the noisy hissing unquestionable this could be your problem. This could be a large vacuum leak ,with the MAF joined it is isolated measuring the let breathe that is getting later the MAF, in view of that if the intake manifold is sucking in air the freshen to fuel ratio will be entirely out and cause the engine to stal