Question about 1992 Mercury Topaz

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1992 mercury topaz

I'm trying to turn down the idling on a 92 mercury topaz. I don't see anywhere to adjust it. Can anyone help?

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  • Car Fixer May 11, 2010

    I'm not familiar with that exact model off-hand, most if not all newer computer-controlled vehicles have the idle controlled by the computer. I would check for a vacuum leak as that could potentially cause idle problems. There are many reasons though....

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I had the same problem. It was the idle air control valve. It sits on top of the intake just downstream from the throttle. There's a valve rod inside that gets worn over time and starts to stick. If that's what is causing your problem, you need to replace the unit.

Posted on Feb 09, 2009

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