Check the hose clips for tightness and examine the trunking for any cracks or splits and furthermore all the vacuum system, the little bore pipes and fittings for cracks and missing parts. The best exaggeration to locate a leak is to have the engine giving out and hot and then spray can lighter gas /propane or brake cleaner just about each joint in turn. If the engine rev s happening 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 tell you a tiny more more or less the trouble history. It currently has a master tech attributed idle freshen control valve and tps installed. without touching anything, the last (used) ecu and my original, would run in the car without this symptom.
I'm reviewing your ask now, and will declare back similar to your respond ASAP. Rgds Greg. What deformity codes complete you have. Does the engine rule bearing in mind the MAF disconnected. in the same way as the noisy hissing sealed this could be your problem. This could be a large vacuum leak ,with the MAF linked it is forlorn measuring the expose that is getting in the same way as the MAF, hence if the intake manifold is sucking in freshen the ventilate to fuel ratio will be very out and cause the engine to stal