No heat
Thread Starter
|
5th Gear
Joined: Feb 2025
Posts: 5
Likes: 0
No heat
2000 Ford excursion has hit and miss heat. I have put a new thermostat on by passed the pressure valve on heater core lines blow out the heater core and blend door is working properly. Need help figuring this out.
Fleet Mechanic
Joined: Mar 2019
Posts: 1,293
Likes: 164
I would suggest opening up the access panel under the dash and after your truck has warmed up take a laser temperature sensor and check the temperature at various spots on the heater core. Mine was recently abysmal and I found the heater core was partially plugged. Flushing did not help it. Only half of the heater core was actually getting hot. I also found that the foam around the core was not sealing well so air was going around it instead of through it.
Thread Starter
|
5th Gear
Joined: Feb 2025
Posts: 5
Likes: 0
I would suggest opening up the access panel under the dash and after your truck has warmed up take a laser temperature sensor and check the temperature at various spots on the heater core. Mine was recently abysmal and I found the heater core was partially plugged. Flushing did not help it. Only half of the heater core was actually getting hot. I also found that the foam around the core was not sealing well so air was going around it instead of through it.
Fleet Mechanic
Joined: Mar 2019
Posts: 1,293
Likes: 164
How are you measuring the water temp? If it is indeed luke warm you need to get that fixed first.
Thread Starter
|
5th Gear
Joined: Feb 2025
Posts: 5
Likes: 0
I pulled the heater core lines while running and the coolant that came out wasn't steaming and it got on my hands and it wasn't hot at all barley warm what do I need to fix this is my first Ford excursion.
Fleet Mechanic
Joined: Mar 2019
Posts: 1,293
Likes: 164
I would take the thermostat out and heat it up in a pan of water to verify it is opening at the expected temperature. You said you replaced it but that doesn't mean it's good. Does the upper coolant hose ever get hot to the touch if it idles for 15-20 minites?
Thread Starter
|
5th Gear
Joined: Feb 2025
Posts: 5
Likes: 0
Yes the upper coolant hose gets hot about 17 minutes of idling
Trending Topics
Logistics Pro
Joined: Mar 2010
Posts: 3,529
Likes: 486
From: NC
If the engine is getting up to temp and no heat, verify the hot water valve is opening and feel the lines going to the heater core. If one line is hot and the other is warm or cool, replace the heater core. It is easy to do once the hoses are removed, unlike most vehicles Ford made these easy to replace.
FTE Stories
Ford Trucks for Ford Truck Enthusiasts
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
2026 Shelby F-150 Off-Road: Better Than a Raptor R?
Brett Foote
2027 Super Duty Carhartt Package First Look: 12 Things You NEED to Know!
Michael S. Palmer
10 Most Surprising 2026 Ford Truck Features!
Joe Kucinski
Top 10 Ford Trucks Coming to Mecum Indy 2026
Brett Foote
5 Best / 5 Worst Ford Truck Wheels of All Time
Joe Kucinski
Thread Starter
|
5th Gear
Joined: Feb 2025
Posts: 5
Likes: 0
If the engine is getting up to temp and no heat, verify the hot water valve is opening and feel the lines going to the heater core. If one line is hot and the other is warm or cool, replace the heater core. It is easy to do once the hoses are removed, unlike most vehicles Ford made these easy to replace.
Hot water valve has been deleted. I have put two thermostat in it now and have done a flush still no heat going to pull heater core today how much of the dash needs to come out to get to heater core
Thread
Thread Starter
Forum
Replies
Last Post
Mumbly Joe
Excursion - King of SUVs
25
Nov 17, 2022 08:10 PM
allerickb
Pre-Power Stroke Diesel (7.3L IDI & 6.9L)
42
Jan 26, 2010 10:55 AM
98expedition98
1997 - 2006 Expedition & Navigator
3
Mar 10, 2007 09:04 PM