1997 Ford Expedition Low heat

Tiny
MIKE AKANA
  • MEMBER
  • 1997 FORD EXPEDITION
Heater problem
1997 Ford Expedition V8 Four Wheel Drive Automatic 128K miles

The heater in my Expedition is just warm to cool air. T-stat changed made no difference. How can I flush the heater system?
Do you
have the same problem?
Yes
No
Monday, October 19th, 2009 AT 6:14 PM

5 Replies

Tiny
JACOBANDNICKOLAS
  • EXPERT
Before doing that, lets check something. With the engine warm, rinning, and the heater on high, feel both heater core hoses. Both should be hot. If they are, there isn't a problem with the heater core.

Let me know what you find.
Was this
answer
helpful?
Yes
No
Saturday, October 24th, 2009 AT 7:32 PM
Tiny
MIKE AKANA
  • MEMBER
Both hoses are hot. Another point I'd like to make. I bought a grill cover which I snap on over the grill to limit air to the radiator which helps some.

Thanks
Was this
answer
helpful?
Yes
No
Monday, October 26th, 2009 AT 6:06 PM
Tiny
JACOBANDNICKOLAS
  • EXPERT
You shouldn't need to cover the radiator. If both hoses are hot, then the heater core is okay and not plugged. What I would think is the problem is called the "Blend Door". It is a vent door that directs air through the heater core box so hot air enters the vehicle. It is located near the heater core and not easy to get to. THat is what I would check. As far as flushing the heater core, if you would have said one hose was hot and the other cool, then I would have recommended the flush. However, I feel strongly that isn't the problem and it's related to the blend door. I hate to say it but I would suggest taking it to a shop to have the blend door checked unless you really feel confident that you can do it. It can be quite a job.
Was this
answer
helpful?
Yes
No
Monday, October 26th, 2009 AT 9:09 PM
Tiny
MIKE AKANA
  • MEMBER
Can this be accessed without the dash removal?
Was this
answer
helpful?
Yes
No
Wednesday, October 28th, 2009 AT 6:39 PM
Tiny
JACOBANDNICKOLAS
  • EXPERT
It's been awhile since I did one, but I think you need to remove a good portion of it.
Was this
answer
helpful?
Yes
No
Thursday, October 29th, 2009 AT 7:18 AM

Please login or register to post a reply.

Recommended Guides