Check the hose clips for tightness and inspect the trunking for any cracks or splits and as well as every 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 organization and warm and next vaporizer lighter gas /propane or brake cleaner on each joint in turn. If the engine rev s going on 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 little more approximately the suffering history. It currently has a master tech recognized idle air control valve and tps installed. without disturbing anything, the last (used) ecu and my original, would control in the car without this symptom.
I don't have any check engine lights unless I unplug the MAF sensor. similar to the MAF is plugged in after that the car will stall unless I put my foot upon the accelerator. There is also an intermittent popping unassailable coming at idle.