Question about 2003 Lincoln Navigator

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Air stops blowing through the vents when accelerating

Upon acceleration, the dashboard vents stop blowing air.. upon mild deceleration, the dashboard vents resume blowing air.

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U have a loss of vacuum to the ac mode control switch, this switch applies vacuum to diff vacuum motors to move air to diff outlets, dash, floor, defrost etc. either the vacuum line or vacuum resivior at the engine is leaking or the mode control is leaking vacuum.

Posted on Aug 14, 2009


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