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    mg zt ,2002 2500cc petrol Archived Message

    Posted by M Hamill on July 29, 2008, 11:47 pm

    Hi anyone had any problems with above ,scanned with launch comes back with code p0505 idle speed control system fault ,changed idle valve no different, checked 12v feed and earth at valve ok seems fine ,about 4 and 6 volts at center two pins on plug but have no data to say if this is correct voltage or not,have been told that intake air control system is a problem on these cars any one know the readings or has any data on these valves that sit on end of inlet manifold ?

    Thanks Mark

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