Heater doesn't work
Thread Starter
|
Junior User
Joined: Mar 2006
Posts: 67
Likes: 0
Heater doesn't work
Lately my heat doesn't work worth a crap. Even on 90 degrees it blows out cool with little warmth. The truck runs at normal temp and the heater core doesn't leak. Is the divider door in the Hvac box all vacuum controlled or what??
Posting Guru
Joined: Feb 2008
Posts: 2,339
Likes: 0
Could be a broken blend door. Not sure on the front, but the rear blend doors are electrically controlled. The front has a tendancy to break the axle on the door itself as opposed to the rear which strips the gear on the actuator motor.
Postmaster
Joined: Jan 2009
Posts: 4,584
Likes: 3
From: Chesapeake, Va.
You might have an air pocket in the system and need to bleed it. Is your cooling system full?
Thread Starter
|
Junior User
Joined: Mar 2006
Posts: 67
Likes: 0
Yup, its full and i have never had to fill it up. I think the wife might have had to add some this last year while I was gone to Iraq though.......Is there a special way to have to burp the system with the dual climate setup? I haven't really done a whole lot of work yet on the modular motors let alone the expedition. It has been pretty problem free for the 3 years I have owned it. I guess tomorrow I could go out and start removing a few things to check out under the dash. Even though its 95+ here now I would rather have it working now and not need it than it not work and need it this winter.
Postmaster
Joined: Jan 2009
Posts: 4,584
Likes: 3
From: Chesapeake, Va.
Glad you're back from the sand pit.
Before you start ripping stuff apart I suggest that you check your heater controls, especially if an after market sound system was installed. If a system was installed you may have a loose or damaged vacuum line at the heater/ac controls. As for burping the cooling systen, it is pretty involved and I suggest that you get a service manual off of eBay or elsewhere. An OEM manual is the best.
Before you start ripping stuff apart I suggest that you check your heater controls, especially if an after market sound system was installed. If a system was installed you may have a loose or damaged vacuum line at the heater/ac controls. As for burping the cooling systen, it is pretty involved and I suggest that you get a service manual off of eBay or elsewhere. An OEM manual is the best.
Thread Starter
|
Junior User
Joined: Mar 2006
Posts: 67
Likes: 0
I do have a haynes manual and no system is installed. I haven't touched a thing other than the radar and K&N filter. Its the family truck.
Trending Topics
Postmaster
Joined: Jan 2009
Posts: 4,584
Likes: 3
From: Chesapeake, Va.
There should be proper instructions in the Haynes manual, if not send me an email address via PM and I'll send the instructions from my Ford service manual.
FTE Stories
Ford Trucks for Ford Truck Enthusiasts
10 Things Every Truck Owner NEEDS (2026 Edition)
Michael S. Palmer
Rezvani's Latest Post-Apocalyptic Monster Is a Ford F-150 Raptor Underneath
Verdad Gallardo
Top 10 Most Expensive Ford Trucks Ever Sold on Bring a Trailer
Joe Kucinski
2027 Ford Super Duty Buyer's Guide (Every Model, Engine, & Package)
Brett Foote
Top 10 Ford Truck Tragedies
Joe Kucinski
AEV FXL Super Duty - the Super Duty Raptor Ford Doesn't Make
Brett Foote
Lobo Vs Lobo: Proof the F-150 Lobo Should Be Even Lower!
Michael S. Palmer
Ford's 2001 Explorer Sportsman Concept Looks For a New Home
Verdad Gallardo
10 Best Ford Truck Engines We Miss the Most!
Joe Kucinski
Thread
Thread Starter
Forum
Replies
Last Post
Bryanblaylock
1973 - 1979 F-100 & Larger F-Series Trucks
5
Apr 18, 2017 10:38 PM
