Check the hose clips for tightness and examine the trunking for any cracks or splits and after that all the vacuum system, the little bore pipes and fittings for cracks and missing parts. The best way to find a leak is to have the engine management and hot and later vaporizer lighter gas /propane or brake cleaner approximately each joint in turn. If the engine rev s stirring 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 tiny more roughly the problem history. It currently has a master tech credited idle freshen 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. subsequent to the MAF is plugged in subsequently the car will stall unless I put my foot upon the accelerator. There is furthermore an intermittent popping sealed coming at idle.