Check the hose clips for tightness and examine the trunking for any cracks or splits and as a consequence all the vacuum system, the little bore pipes and fittings for cracks and missing parts. The best pretentiousness to locate a leak is to have the engine organization and warm and next spray lighter gas /propane or brake cleaner around 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 tell you a tiny more roughly the difficulty history. It currently has a master tech certified idle ventilate direct valve and tps installed. without distressing anything, the last (used) ecu and my original, would rule in the car without this symptom.
I don't have any check engine lights unless I unplug the MAF sensor. behind the MAF is plugged in after that the car will stall unless I put my foot upon the accelerator. There is in addition to an intermittent popping strong coming at idle.