In a message dated 9/12/02 6:53:03 PM Pacific Daylight Time, brobertson@xxxx writes: << My particular PRV has the idle speed motor hard wired too (courtesy of Goober, the friendly neighborhood Volvo mechanic -- I'm burning a replacement block). Microswitch is missing altogether. Except for additional wear on motor, presents no problems. >> Bill, With out the microswitch, the idle speed motor may or may not work depending on how it was wired and the vaccum solenoid won't work either. John www.specialTauto.com