Question about 1999 Ford Expedition
How to change and bypass
To change this heater core is a big job, I did mine on my 99 F150, which is incredibly similar, it requires the removal of the complete dash to remove the environmental control station (heater core/air conditioning evaporator). If you are not comfortable with removing basically the whole dash, I recommend that you take it to a good shop in your area. If you are comfortable with it, then you should get a Haynes or Chilton Manual and follow the steps listed in those manuals.
To bypass you would have to disconnect the two heater hoses on the right side of the engine compartment at the engine connectors and install a hose between the two.
Posted on Apr 14, 2009
a 6ya expert can help you resolve that issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
New users get 2 Free calls (no credit card required) and instant help on almost anything you can think of (from cars to computers, appliances, handyman, and even pets).
click here to download the app (for users in the US for now) and get all the help you need.
Posted on Jan 02, 2017
well it could be a clog but i doubt it. sounds like you will have to replace the heater core and it takes all day as the entire dash and steering column has to come out.
Posted on Dec 22, 2008
use a short length of 15mm copper pipe and join the heater pipes together where ther connect to teh heater feed pipes in the engine compartment
Posted on May 09, 2009
SOURCE: BLOCKED heater core
remove one of the heater core hoses at the bulk head or firewall and loop together where they go to the engine so no coolant goes into cab (through firewall)
Posted on Jun 26, 2009
Yes it can be done. look at your engine on it there will be two heater hoses coming from the engine to the heater, disconnect those two heater hoses at engine, with heater hose and two hose clamps, get the hose and clamp first at auto parts, install one end and the other end of same hose, where you disconnected the heater hoses from the engine, you have just by-pass the heater, hope this was very helpful.
Posted on Jul 14, 2010
Testimonial: "Okay great thanks. I'll have to find a T, not much luck when I looked at Auto Zone or O'Reilly"
Tips for a great answer:
Jun 25, 2016 | Lincoln Cars & Trucks
Oct 24, 2015 | Cars & Trucks
Jul 16, 2015 | 2004 Chevrolet Silverado 1500 Crew Cab
Jan 28, 2013 | 2003 Lexus IS 300
Aug 08, 2017 | 2000 Ford Taurus
Jan 06, 2013 | 2000 Pontiac Grand Prix
Jan 25, 2011 | 2000 Dodge Durango
Dec 31, 2009 | 1991 Volkswagen Passat
Jun 25, 2009 | 1999 Kia Sportage
269 people viewed this question
Usually answered in minutes!
Step 2: Please assign your manual to a product: