Question about 1999 Lincoln Navigator
Try changing the thermostat if thats not it check and see if you have water leaking in the passenger side floor board if so then you need a new heater core
Posted on Feb 24, 2009
Set the climate control on FLOOR and set the temp on 90 degrees.set the front fan speed to MIN. Then, set the rear controls to MAX HEAT and MAX fan speed. If you have HOT air coming out of the vents, that means you have HOT water circulating through the heater cores and lines. This means that you are having a problem with the blend door in the FRONT climate system. This is a common problem with Navigator/ Expedition/ F150 trucks. Have the blend door replaced and you should be fine. Keep in mind replacing the blend door (because it is in the bottom of the dashboard) requires disassembly of the front dashboard. Check out WWW.heatertreater.net for an easier solution to access the blend door and a better replacement blend door.
Posted on Jan 22, 2012
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Posted on Jan 02, 2017
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