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There is an idle set screw located on the throttle body just above the air inlet. It is usually covered by gray paint and must be cleaned for the flat blade screwdriver to fit in it. The procedure is as this: With the car running, open (turn counter clockwise) the screw a few revolutions but don't completely remove it. Then with the idle air control motor (located on back of intake manifold next to the throttle body with its 2-wire connector on the underside) unplugged turn the screw back in until the motor comes close to dying then plug the motor back in. Good Luck

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17y ago
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Q: How do you adjust the idle speed on a 1992 Honda Civic?
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