Question about 1999 Ford Expedition
How do you bypass a rear heater core in a 99 ford expedition?
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Posted on Jan 02, 2017
the heater bypass is quite simple, if you look at the firewall you will see two medium sized coolant lines, remove them from the firewall and link them together using a proper sized tube, you can purchase a kit at a parts store quite cheaply
Posted on Oct 11, 2008
Check your blend door, check the actuator that operates the door, go to the middle of your dash and look down, find the black cover at the bottom, on the right side you will find the motor that moves the door, either the motor is bad or the door is broken, test the motor by removing it (should be a white square box held with 3 screws), and operating the temperature control while watching the motor drive, if the motor is good check the door drive it will probably be broken, use a mirror to see it, if the door is broken, to change it is a hard job considering that the entire dash must be removed. Hope this helps, let me know.
Posted on Dec 07, 2009
Heater core is a lot of work, but not extremely technical. You do have to remove the console, if applicable, and most of the passenger side dash materials, until you can get to all the small bolts on the bottom of the black blower unit. Beware of all the blend doors, they have to go back in the right places!. Then, to get the old core out, you may want to cut the metal tubes of the heater core, so you can work loose the hose connections to fit the new one. Strongly recommend Ford OEM replacement core, about $110, for fit. Also check closely the bottom of the blend door axle for cracks, you may want to replace it (about $35) while you are there. Local A/C shop with good reputation quotes $350 labor for this job. Good luck!
Posted on Jan 26, 2010
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