Mercury Mystique Engine Idle High

Car Runs Excellent However When I Come To A Stop It Starts Idling Up And Down Almost To Where It Dies. Then Once I Go It Runs Great Again....

My Check Engine Light Was On. The Engine Detector Said That My Egr Valve Needed To Be Changed. My Friend Changed The Egr Valve, And Now My...

My 1996 Mercury Mystique Idles High And Low Then Smooth,sometimes Stalls When I Give It Gasbackfires,and Looses Power.i Replaced The Fuel...