This could be an airleak after the airflow meter, any let breathe dragged in here isn t seen by the ECU and appropriately not compensated for and can lean the engine out and can along with permit the engine to rev taking place past not desired causing severe running. As its a mechanical aberration it tends not to turn on the malfunction fresh and you can sometimes hear a hissing noise when 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 little more practically the hardship history. It currently has a master tech endorsed idle air manage valve and tps installed. without heartwarming anything, the last (used) ecu and my original, would control in the car without this symptom.
This could be a large vacuum leak ,with the MAF related it is lonesome measuring the freshen that is getting taking into consideration the MAF, therefore if the intake manifold is sucking in ventilate the expose to fuel ratio will be extremely out and cause the engine to stall. If MAF is disconnected the engine goes into a limp measurement and lets the engine run. taking into consideration carb cleaner spray can spray can in the place of the hissing taking into consideration the engine management and behind you hear the engine stall or rev far ahead there is the leak ,could be a bad vacuum hose bad gasket upon the manifold.