Cadillac Deville The flagship luxury car, offering the class with which the Cadillac has been associated, for decades

isc rpm out of range

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Old Apr 12, 2009 | 10:49 PM
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squidfoot's Avatar
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Default isc rpm out of range

what does ISC stand for? And why is it out of range? 1991 sedan devil.

Thanks!
 
Old Apr 13, 2009 | 01:45 PM
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ISC is "Idle Speed Control" this keeps the idle at around 600-700 rpms. It is located by the throttle body its that little black motor with a silver aluminum shaft that you can adjust to change the idle.You can check to see if it gets stuck in one spot or if it needs to be readjusted while the car is idling.
 
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