Andra Posted May 18, 2012 Share Posted May 18, 2012 My idle speed seems correct while the engine is sitting with the parking brake on. However, with the slightest touch to my brake pedal, and my RPM's drop... Then surge up again, drop, surge and repeat that process until I release the brake pedal. Does anybody have any idea what this may caused by? Quote Link to comment Share on other sites More sharing options...
humanoid Posted May 18, 2012 Share Posted May 18, 2012 I would check for loose vacuum lines, maybe one got knocked loose while it was being worked on recently. Quote Link to comment Share on other sites More sharing options...
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