Apr 13, 2015, 01:39 PM
Last edit by: IB Advertising
Blend door replacement with pictures
http://www.f150online.com/forums/hva...-pictures.html
ISSUE
’97-’02 F150’s and Expygators temperature blend doors are breaking. This is a labor intensive Do-It-Yourself guide with pictures and details
Read below for the full discussion…
http://www.f150online.com/forums/hva...-pictures.html
ISSUE
’97-’02 F150’s and Expygators temperature blend doors are breaking. This is a labor intensive Do-It-Yourself guide with pictures and details
Read below for the full discussion…
Blend door replacement with pictures
Junior Member
Joined: Jan 2015
Posts: 4
Likes: 0
What an incredible write up! Thanks so much for taking the time. Now I see why the cheapest place I've found to replace the heater core wants $800 to do it. 
I have always hated doing heater cores, but I think this quite possibly may be the worst I'll ever attempt. I think I had less aggrivation replacing the motor in my 98 Cobra than I'm going to have replacing this heater core 
I had flushed the system with water and tried some of that stop a leak crap, but I couldn't tell if it worked. The leak seems to be rather small, the level in the radiator overflow doesn't go down and there is no fluid on the carpet. I see now how I was able to still smell antifreeze with the A.C. on with that huge enclosure for the 2 cores.
One question I do have, I was told this 99 Navigator had 2 heater cores, where is the second?
I have always hated doing heater cores, but I think this quite possibly may be the worst I'll ever attempt. I think I had less aggrivation replacing the motor in my 98 Cobra than I'm going to have replacing this heater core I had flushed the system with water and tried some of that stop a leak crap, but I couldn't tell if it worked. The leak seems to be rather small, the level in the radiator overflow doesn't go down and there is no fluid on the carpet. I see now how I was able to still smell antifreeze with the A.C. on with that huge enclosure for the 2 cores.One question I do have, I was told this 99 Navigator had 2 heater cores, where is the second?