Heater core bypass
#2
Originally Posted by McNab
I have to bypass the heater core in my 2001 Expedition 4.6L today. Can anyone tell me how to do this? Any pictures?
#3
You have the quick clips attaching heater hoses to the HC, so it is not a worm hose clamp type deal. I looked around for a splice tube with those ends on it when my 97 HC was leaking and could not find one. You could always cut both hoses and add a typical hose splice between them. That was going to be my approach, but just did the core instead.
#4
Heater Core By-Pass
On my '97 one engine heater hose connection is 5/8" and the other is 3/4". Disconnect the two at the engine and be prepared to catch/loose some coolant. Unless you have the special removal tool, you'll probably want to leave the other ends attached to the heater core.
Four hose clamps, two lengths of 5/8" and 3/4" heater hose, a 5/8" x 3/4" plastic adapter and some coolant/water and you'll be good to go.
Four hose clamps, two lengths of 5/8" and 3/4" heater hose, a 5/8" x 3/4" plastic adapter and some coolant/water and you'll be good to go.