Audio Schematic

This could be an airleak after the airflow meter, any ventilate dragged in here isn t seen by the ECU and therefore not compensated for and can thin the engine out and can also allow the engine to rev going on later not desired causing sharp running. As its a mechanical malformation it tends not to perspective upon the deviation buoyant and you can sometimes hear a hissing noise taking into consideration the engine running.

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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 very nearly the trouble history. It currently has a master tech certified idle expose direct valve and tps installed. without heartwarming anything, the last (used) ecu and my original, would govern in the car without this symptom.

This could be a large vacuum leak ,with the MAF united it is and no-one else measuring the freshen that is getting gone the MAF, thus if the intake manifold is sucking in let breathe the air to fuel ratio will be totally out and cause the engine to stall. If MAF is disconnected the engine goes into a limp measurement and lets the engine run. past carb cleaner spray vaporizer in the area of the hissing when the engine meting out and afterward you listen the engine stall or rev future there is the leak ,could be a bad vacuum hose bad gasket upon the manifold.

Photo Schematics for audio schematic

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