No Heat - heater not working?

Tiny
ROBT262003
  • MEMBER
  • 2000 FORD EXPEDITION
  • V8
  • AWD
  • AUTOMATIC
  • 149,000 MILES
I have not heat in my vehicle. I have changed the thermostat, changed and flushed the coolant and got nothing. I was told to check the heater control valve but I can not locate it. Can you help me. And is that something easy to change
Do you
have the same problem?
Yes
No
Wednesday, December 9th, 2009 AT 11:11 PM

39 Replies

Tiny
JACOBANDNICKOLAS
  • EXPERT
First, you don't have a heater control valve. In the vehicle is a blend door that determines if you get heat or AC. It is located near the heater core under the dash.

However, I need you to check something. With the engine running, hot, and the heater on high, feel both heater core hoses. Both should be hot.

Let me know what you find.
Joe
Was this
answer
helpful?
Yes
No
+1
Thursday, December 10th, 2009 AT 8:17 AM
Tiny
BREPAIR
  • MEMBER
I have a 2000 ford expedition that has had no heat for the last two years. I tried thermostats
and flushed and flushed the system again and again. Flushed the heater core again and again. No heat. Changed the waterpump too. No heat. Flushed theheater core. No heat. And yes at operating tempature both heater hoses were hot. But no heat. So I said to myself what I have been deading heater core? Yes I changed the heater core. And guess what? Heat like you would not believe!I took the old heater core and sawed open the tanksand it was pluged solid with sludge. Turned out only two runs were open. With fluid being lazy it took the path of least resistance and thats what was keeping my heater hoses hot having me think there was good circulation. So for all you outher guys driving igloos on wheels be ware of the heater core when all elce fails. Warning this is not a small job! Aprox 11hrs. I am a licenced tech and its quite a job. The whole dash has to come off clear to the firewall in order to get heater core acess. Hope I have been some help brian.
Was this
answer
helpful?
Yes
No
+5
Tuesday, December 29th, 2009 AT 1:58 AM
Tiny
G1UNITED
  • MEMBER
  • 2000 FORD EXPEDITION
  • V8
  • 2WD
  • AUTOMATIC
  • 177,000 MILES
Not getting any heat in the rear of my 2000 ford expedition what could be the problem?
Was this
answer
helpful?
Yes
No
Thursday, June 11th, 2020 AT 6:49 PM (Merged)
Tiny
JACOBANDNICKOLAS
  • EXPERT
Is the fan working? Have you checked for vacuum leaks? THe vent doors that change the system from heat to AC are actuated by vacuum. Check for hoses that are disconnected or damaged under the dash. WIth the engine running, you may hear a hissing sound.
Was this
answer
helpful?
Yes
No
Thursday, June 11th, 2020 AT 6:49 PM (Merged)
Tiny
ERIKACOOPER
  • MEMBER
  • 2000 FORD EXPEDITION
  • 177,310 MILES
I have a 2000 Ford Expedition that the heat does not work. The air works great but when you turn the heater on, it seems as though the air is still on-there is no change in the temp of the air coming through the vents. What could cause this to happen?
Was this
answer
helpful?
Yes
No
Thursday, June 11th, 2020 AT 6:49 PM (Merged)
Tiny
KHLOW2008
  • EXPERT
The air-mix and venting systems seems to be faulty or stuck and not allowing the proper air delivery. You would need to check the actuator movements etc. Is this an automatic or manual HVAC system?
Was this
answer
helpful?
Yes
No
Thursday, June 11th, 2020 AT 6:49 PM (Merged)
Tiny
ERIKACOOPER
  • MEMBER
I'm not actually sure. It is my husbands trucka nd we just bought it 4 days ago. He thinks it is automatic.
Was this
answer
helpful?
Yes
No
Thursday, June 11th, 2020 AT 6:49 PM (Merged)
Tiny
KHLOW2008
  • EXPERT
The blend doors are vacuum operated so I would suggest starting by checking the vacuum hoses for leaks.
Was this
answer
helpful?
Yes
No
Thursday, June 11th, 2020 AT 6:49 PM (Merged)
Tiny
BENJYW
  • MEMBER
  • 2000 FORD EXPEDITION
  • 4.6L
  • V8
  • RWD
  • AUTOMATIC
  • 150,444 MILES
I cantfindaheatercontrolvalve and everyone tells meitsthe blender door that's causing me to have no heat. Butifit was the blender door wouldn't I still have heat at the rear unit? Can you help? Thanks
Was this
answer
helpful?
Yes
No
Thursday, June 11th, 2020 AT 6:49 PM (Merged)
Tiny
HMAC300
  • EXPERT
It is a blend door which is under the heater towards passenger side a few ducts have to be removed to get to it but pull your hvac fuse with key on first for 60 seconds then reinstall see if that cures it sometimes they reset. If you replace it and have rear air that duct has to be pulled back as well as other see pics
Was this
answer
helpful?
Yes
No
Thursday, June 11th, 2020 AT 6:49 PM (Merged)
Tiny
88COOLJ
  • MEMBER
  • 2000 FORD EXPEDITION
  • V8
  • 4WD
  • AUTOMATIC
  • 186,000 MILES
The front heater is not getting hot. I replaced the control tempture module. Still no hot air.
The rear heater does get hot.
Was this
answer
helpful?
Yes
No
Thursday, June 11th, 2020 AT 6:50 PM (Merged)
Tiny
JACOBANDNICKOLAS
  • EXPERT
Did you check the blend door?
Was this
answer
helpful?
Yes
No
Thursday, June 11th, 2020 AT 6:50 PM (Merged)
Tiny
88COOLJ
  • MEMBER
Where is it located? Behind the glove box?
Was this
answer
helpful?
Yes
No
Thursday, June 11th, 2020 AT 6:50 PM (Merged)
Tiny
JALLEY
  • MEMBER
  • 2000 FORD EXPEDITION
  • 5.4L
  • V8
  • AWD
  • AUTOMATIC
  • 177,000 MILES
Ok my heater blows but its not getting hot at all and there is a clicking noise in the rear driver side panel.
And when u turn a corner there is a grinding noise in the rear end its acts like it trys to lock up.
And how do u change the plugs in the 5.4 triton
Was this
answer
helpful?
Yes
No
Thursday, June 11th, 2020 AT 6:50 PM (Merged)
Tiny
HMAC300
  • EXPERT
Disconnect the Coil On Plug (COP) electrical connectors. Remove the COP bolt and Remove the COP. Remove any foreign debris from the spark plug wells with compressed air. Remove the spark plugs. To install, reverse removal procedure. Tighten to specification 7-14 ft lbs. Make absolutely sure to do on a COLD engine and use anti seize on replacement plugs.
Was this
answer
helpful?
Yes
No
Thursday, June 11th, 2020 AT 6:50 PM (Merged)
Tiny
LEOLADY809
  • MEMBER
  • 2000 FORD EXPEDITION
  • V8
  • 2WD
  • AUTOMATIC
  • 144,000 MILES
One day my heater works fine, the next day. Not so good. I have the digital gage to set the temperature I can set it to the highest temp and it only feels like "luke warm" air. The thing that confuses me is my heat works fine in the back rows? All the blowers are working, but I do notice my windshield fogging up more than usual? Any help would be appreciated Thanks
Was this
answer
helpful?
Yes
No
Thursday, June 11th, 2020 AT 6:50 PM (Merged)
Tiny
RASMATAZ
  • MEMBER
Could be a problem with vacuum and actuator to the air/blend/mode doors-
Was this
answer
helpful?
Yes
No
Thursday, June 11th, 2020 AT 6:50 PM (Merged)
Tiny
LEOLADY809
  • MEMBER
? I feel like I always get ripped off when I take it to a shop. Could you estimate what this might cost, or what needs repairing? All they tell me is its my heater core and it will over a $1000. Once again, any help is appreciated.
Was this
answer
helpful?
Yes
No
Thursday, June 11th, 2020 AT 6:50 PM (Merged)
Tiny
RASMATAZ
  • MEMBER
If there's a problem with the heater core it will affect the back one-

Check the radiator makes sure its filled with coolant-also see below its really hard to estimate the costs for such repairs it varies with locations-Good Luck


http://www.2carpros.com/forum/automotive_pictures/12900_h1_4.jpg




http://www.2carpros.com/forum/automotive_pictures/12900_h2_4.jpg

Was this
answer
helpful?
Yes
No
Thursday, June 11th, 2020 AT 6:50 PM (Merged)
Tiny
ENIGMA
  • MEMBER
  • 2000 FORD EXPEDITION
  • V8
  • 2WD
  • AUTOMATIC
  • 147,000 MILES
I have noticed that it is beginning to take longer and longer for the car to heat up. The heat blasts, but it's not hot air until 10 minutes later just about. Possible suggestions?
Was this
answer
helpful?
Yes
No
Thursday, June 11th, 2020 AT 6:50 PM (Merged)

Please login or register to post a reply.

Sponsored links