This could be an airleak after the airflow meter, any air dragged in here isn t seen by the ECU and hence not compensated for and can lean the engine out and can plus permit the engine to rev stirring with not desired causing rude running. As its a mechanical malformation it tends not to outlook on the malfunction light and you can sometimes listen a hissing noise with 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 tiny more nearly the burden history. It currently has a master tech official idle ventilate govern valve and tps installed. without touching anything, the last (used) ecu and my original, would govern in the car without this symptom.
Hi, get you still compulsion help? Bear in mind that the site takes a addition from you at the beginning and this is held by the site until you rate my reply at which lessening the cash is split with the site and the expert. I am forlorn paid for my operate on this ask if you rate my answer, using the star system at the summit of the screen. keep busy do not forget! Thank you