rhtjr97 Posted March 1, 2005 Report Share Posted March 1, 2005 Can anybody relate? The idle speed control unit on my 92 seville keeps wanting to increase the rpms without cause. It will do this while idling and while driving. 2 Caddy dealers are completely stumped. I have replaced the ISC unit twice with no results. Can anybody relate or offer suggestions as to what may be causing the problem? The only code on the computer is the code for a faulty ISC unit. Hence, replacing it twice. HELP!!!! Link to comment Share on other sites More sharing options...
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