No heat
Thread Starter
|
Posting Guru
Joined: Sep 2008
Posts: 2,379
Likes: 2
No heat
For a while I have had no heat and I thought it was the blend door that is the problem. But I have adjusted the blend door so it should be closed and the air that comes out is cold. It's not as cold as the outside air but it doesn't feel warm at all. Is there something else I should be looking at?
Thread Starter
|
Posting Guru
Joined: Sep 2008
Posts: 2,379
Likes: 2
Coolant is fine, I check it frequently. I don't think the water pump is bad, I have a digital temp gauge and it is not any warmer or cooler than normal. I'll look at the core, might be plugged or have air.
FTE Legend
Joined: Jun 2006
Posts: 31,930
Likes: 1,499
From: Ottawa, Ontario
Detatch the heater core lines and force some water through the core in both directions until it flows clear. I have seen some nasty looking gunk come out of a heater core when doing this and it always makes a difference in the amount of heat you get in the cab.
A test for a clogged heater core is once the engine is at operating temp put your hand on the two heater core lines to see if there is any temperature difference, there should not be a big difference, one maybe slightly cooler but both should feel warm.
A test for a clogged heater core is once the engine is at operating temp put your hand on the two heater core lines to see if there is any temperature difference, there should not be a big difference, one maybe slightly cooler but both should feel warm.
Thread Starter
|
Posting Guru
Joined: Sep 2008
Posts: 2,379
Likes: 2
Today I checked the heater core for clogs by removing the hoses. No clogs, I was able to blow through the core with no problems, and the coolant was the same color as the coolant in the radiator. So it's got to be the blend door, I guess. I'm sick of not having heat so I'm gonna figure this out.
Senior User
Joined: Jan 2014
Posts: 160
Likes: 0
From: Lincoln, NE
Check the fitting that comes out of the engine block. I've seen those pretty much plugged with deposits. plugged = no flow, no flow = no heat.
Trending Topics
Thread Starter
|
Posting Guru
Joined: Sep 2008
Posts: 2,379
Likes: 2
Do you mean the fitting where the ECT is? I've data logged the ECT and it reads the same as my digital gauge. But I'll check the temp of the lines When I warm up the motor next time. That'll tell me if the coolant is moving in that area, which I think it is.
FTE Stories
Ford Trucks for Ford Truck Enthusiasts
Top 10 Fords at 2026 Carlisle Ford Nationals
Joe Kucinski
3 Best / 3 Worst Parts of Modern Ford Ownership
Brett Foote
10 Amazing Upgrades That Solve Common Ford Truck Owner Headaches
Pouria Savadkouei
Every 2026 Ford Engine Explained
Brett Foote
10 Ugly Ford Trucks That We Still Kinda Love
Joe Kucinski
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
Senior User
Joined: Jan 2014
Posts: 160
Likes: 0
From: Lincoln, NE
Its really a pretty simple system, if the blend door is working properly, then it almost has to be a low/no flow problem.
Thread Starter
|
Posting Guru
Joined: Sep 2008
Posts: 2,379
Likes: 2
Well now that the ****ing Broncos played the worst game of the year and the season is over, I'll have more time to work on the truck. I'll have this fixed by week's end and get my water/meth injection by month's end.
Senior User
Joined: Jan 2014
Posts: 160
Likes: 0
From: Lincoln, NE
I have friends in Denver. I'm not a Seahawk fan, but nonetheless I'm going to leave them alone for a couple of days lol...
Thread Starter
|
Posting Guru
Joined: Sep 2008
Posts: 2,379
Likes: 2
Seems it was the blend door. The mounting post where the temp select cable mounts to behind the glove box broke and that left the door open a little. I fixed it with a zip tie for now, that should get me through the season and then I'll replace it.
Senior User
Joined: Jan 2014
Posts: 160
Likes: 0
From: Lincoln, NE
Zip ties, duct tape, WD-40, and a pair of pliers should be able to fix just about anything, lol
Thread
Thread Starter
Forum
Replies
Last Post