I JUST DID A TUNE UP ON MY 92 MERCURY TOPAZ 2.3 L MOTOR. PLUGS,WIRES CAP, ROTOR.
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I ALSO CHANGED THE IGNITION COIL. I HAD THE FILTER HOUSING OFF ALSO TO REPLACE SOME FITTINGS ON IT. NOW MY IDLE IS RUNNING TO HIGH AND WON'T COME DOWN. ABOUT 2000 RPMS IN PARK AND ABOUT 175 IN DRIVE. THE CAR RUNS GREAT EXCEPT FOR THE HIGH IDLE. WHAT CAUSED THE IDLE TO GO UP.
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