Question about Lincoln Navigator

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In my 1999 Lincoln Navigator the heater blows hot air out of the rear vents but not out of the front vents. Why could thi be?

I changed the thermostat and replaced the coolant but when the heater is on hot air only blows out of the rear vents. Cold air still blows from the front vents.

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You have a vacuum leak in the selector switch for front heat explorers had similar problems

Posted on Feb 12, 2012

Testimonial: "Thanx. Is this something that can be fixed by myself or do I need to take it to a shop?"

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Check your service record for your last coolant and thermostat change. Recommended service interval is every 2 years.

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