Check the hose clips for tightness and examine the trunking for any cracks or splits and next every the vacuum system, the little bore pipes and fittings for cracks and missing parts. The best pretentiousness to find a leak is to have the engine admin and hot and subsequently vaporizer lighter gas /propane or brake cleaner on the order of each joint in turn. If the engine rev s occurring 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 little more more or less the burden history. It currently has a master tech attributed idle freshen control valve and tps installed. without heartwarming anything, the last (used) ecu and my original, would govern in the car without this symptom.
I'm reviewing your question now, and will state support taking into account your reply ASAP. Rgds Greg. What deviation codes do you have. Does the engine manage later than the MAF disconnected. subsequently the noisy hissing hermetically sealed this could be your problem. This could be a large vacuum leak ,with the MAF connected it is solitary measuring the expose that is getting afterward the MAF, therefore if the intake manifold is sucking in expose the expose to fuel ratio will be very out and cause the engine to stal