Posted on Aug 11, 2010

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In my 1998 ford expedition the air works fine then when the truck hits a bump or I turn the wheel sometimes it clicks off. After a few minutes it will turn back on. You can hear it click off when this happens. Is something loose? It blows ice cold then heat instantly. It sounds like a flap shuts or shuts off.

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Anonymous

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Posted on Aug 12, 2010

Anonymous

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There is a "flap" like you say inside the blower box that mixes hot and cold air. in my 93 mustang this flap is controlled by a vacuum line, check for a vacuum leak? on a newer vehicle it may not be vacuum activated, but this flap is most likely the problem

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1998 Ford Mustang V6 automatic. When hitting a bump the radio turns off and car goes into neutral for a few seconds?

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