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1990 Cadillac DeVille Question: My 1990 cadillac sedan deville Idles high.

 

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snoopy321, Syracuse, NY, November 10, 2012, 10:37
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If I press on the brake hard it will idle down. When I am driving if I let off the gass it will maintain speed, without the cruise control on. I just had a tune up done and it has been doing sinse then. What could thye problem be?

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