Question about 1997 Mercury Mountaineer

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Idles rough but run ok down the highway - 1997 Mercury Mountaineer

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I would take a voltmeter and check the idle air control motor make sure it is functioning sounds like it is dirty or malfunctioning try cleaning it it is dead smack right in the middle of your motor on top between the black tubes huge sorry cant think there name also use carb cleaner spray to clean it and shoot some in the throttle body may be dirty and will clean injectors any these can mess up idle but this should tell you where to start but the iac motor is high possabilty all does con trols idle

Posted on Sep 14, 2010

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