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 quirk to find a leak is to have the engine processing and hot and later spray lighter gas /propane or brake cleaner more or less each joint in turn. If the engine rev s taking place 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 practically the hardship history. It currently has a master tech attributed idle let breathe rule valve and tps installed. without disturbing anything, the last (used) ecu and my original, would rule in the car without this symptom.
I'm reviewing your ask now, and will post encourage later your respond ASAP. Rgds Greg. What idiosyncrasy codes attain you have. Does the engine direct in the same way as the MAF disconnected. subsequently the noisy hissing hermetic this could be your problem. This could be a large vacuum leak ,with the MAF combined it is and no-one else measuring the ventilate that is getting subsequently the MAF, in view of that if the intake manifold is sucking in expose the expose to fuel ratio will be categorically out and cause the engine to stal