Why is my 1999 cadillac deville idled so hi

Jeremy Dunn

Asked by Oct 22, 2014 at 08:43 PM about the 1999 Cadillac DeVille Concours Sedan

Question type: Maintenance & Repair

3 Answers

Jeremy Dunn



Usually,high idle is caused by a vacume leak,check intake for loose line,s and all other vacume hose,s,


Or a bad throttle positioning sensor

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