2000 FORD F-150 HEATER BLOWS COLD

  • Tiny
  • 2CarPros-Archives
  • 2000 Ford F-150
  • V8
  • 2WD
  • automatic
  • 87,000 miles

2000 Ford F-150 XL mileage: 87,000. The heater is not blowing hot air. I have already replaced the heater core, the thermostat, and the anti-freeze. I have even checked the cable that activates the door that is supposed to allow hot air into the ductwork. Am I missing something? Any other possibilities? I don't mind the cold it's just hard to see out the windows when it snows and ice's. The A/C works just fine! Let me know what you think!

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Thursday, February 17th, 2011 AT 8:49 PM

4 Replies

  • Tiny
  • 2CarPros-Archives
  • Member

The heater control valve may be stuck closed. Also, check vacuum source to valve

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Thursday, February 17th, 2011 AT 8:52 PM
  • Tiny
  • merlin2021
  • Expert
  • 17,587 posts

No heat control valve in this one, it's an electrcally operated temperture blend door inside the plenum, scan for codes with a tool that reads "B" codes. If both heater hoses are hot, the blend door is the problem.

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Thursday, February 17th, 2011 AT 9:01 PM
  • Tiny
  • mjr346
  • Member

Can't scan the system for codes on vehicles this old, you will need to do what Merlin says but the blend door motor is a known problem. But is not a shade tree job

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Friday, February 18th, 2011 AT 4:23 AM
  • Tiny
  • merlin2021
  • Expert
  • 17,587 posts

2000 models can be scanned

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Friday, February 18th, 2011 AT 8:29 AM

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