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Q: my cadillac idle up really high it can get up to 50 mph with out giving it gas on 2003 Cadillac DeVille

as soon as i start the car it idles so high i can not drive it
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How fast if up a steep hill? if your a DIYr then open the hood and check for vacuum hoses broken or disconnected and look at the throttle linkage carefully . if it's not electric throttle make sure it moves freely & the throttle is closed Tell me the results of these inspections or tow it to a shop but i would not drive it as you described.
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