This could be an airleak after the airflow meter, any air dragged in here isn t seen by the ECU and appropriately not compensated for and can thin the engine out and can along with permit the engine to rev stirring past not desired causing brusque running. As its a mechanical malformation it tends not to twist on the malfunction lively and you can sometimes listen a hissing noise in imitation of the engine running.
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 virtually the problem history. It currently has a master tech official idle air control valve and tps installed. without moving anything, the last (used) ecu and my original, would run in the car without this symptom.
This could be a large vacuum leak ,with the MAF amalgamated it is single-handedly measuring the freshen that is getting subsequently the MAF, thus if the intake manifold is sucking in let breathe the freshen to fuel ratio will be completely out and cause the engine to stall. If MAF is disconnected the engine goes into a limp measurement and lets the engine run. following carb cleaner vaporizer spray can in the place of the hissing similar to the engine processing and with you listen the engine stall or rev unconventional there is the leak ,could be a bad vacuum hose bad gasket upon the manifold.