Car Ignition System Diagram

This could be an airleak after the airflow meter, any air dragged in here isn t seen by the ECU and consequently not compensated for and can thin the engine out and can as a consequence permit the engine to rev happening bearing in mind not desired causing rasping running. As its a mechanical anomaly it tends not to incline upon the fault vivacious and you can sometimes listen a hissing noise gone 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 nearly the trouble history. It currently has a master tech certified idle let breathe govern valve and tps installed. without touching anything, the last (used) ecu and my original, would direct in the car without this symptom.

I'm reviewing your ask now, and will publish urge on like your reply ASAP. Rgds Greg. What aberration codes pull off you have. Does the engine manage once the MAF disconnected. when the noisy hissing hermetically sealed this could be your problem. This could be a large vacuum leak ,with the MAF associated it is and no-one else measuring the air that is getting next the MAF, therefore if the intake manifold is sucking in ventilate the let breathe to fuel ratio will be totally out and cause the engine to stal

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