What could make a 2003 sls seville idle bounce up and down? Got new mas .fuel filter and air filter and my thtottle body cleaned

Asked by Klay May 01, 2017 at 04:47 PM about the 2003 Cadillac DeVille Sedan FWD

Question type: Maintenance & Repair

1 Answer
38,905

beatupchevy answered 6 years ago

If it didn't do that before the work you did then more than likely what you did has something to do with it . The MAF sensor can get ruined by carb cleaner and they make a cleaner just for thwm ,, some throttle plates have a coating that can also get ruined, scan for codes even if the light ain't on , you would think it's the air idle control bit it may be getting mixed signals

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