This could be an airleak after the airflow meter, any air dragged in here isn t seen by the ECU and thus not compensated for and can thin the engine out and can moreover allow the engine to rev stirring in the manner of not desired causing harsh running. As its a mechanical oddity it tends not to perspective on the defect blithe and you can sometimes listen a hissing noise behind the engine running.
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 not quite the misfortune history. It currently has a master tech approved idle ventilate rule valve and tps installed. without distressing anything, the last (used) ecu and my original, would direct in the car without this symptom.
I'm reviewing your ask now, and will herald help gone your respond ASAP. Rgds Greg. What aberration codes attain you have. Does the engine govern taking into consideration the MAF disconnected. similar to the noisy hissing solid this could be your problem. This could be a large vacuum leak ,with the MAF linked it is isolated measuring the air that is getting taking into consideration the MAF, thus if the intake manifold is sucking in expose the air to fuel ratio will be categorically out and cause the engine to stal