99 SL1 auto trns has slight miss or engine roughness when foot is lifted off brake pedal. also engine misses slightly when brake pedal is applied

Asked by Dec 04, 2011 at 01:49 PM about the 1999 Saturn S-Series

Question type: Maintenance & Repair

4 Answers

1,485

is your check engine light on?

no, engine runs smooth until stopped with foot on brake

1,485

well if you did in fact have a miss fire, it would throw a code. Im guessing the rpms drop when you brake

65

maybe have a brake power booster leaking- plug the vacuum line going to vacuum booster under hood- see if engine smoothes out

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