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2000 Ford F-150 HEATER BLOWS COLD

Tiny
UBASSFISHER
  • MEMBER
  • 2000 FORD F-150
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 147,000 MILES
I have a 2000 ford f150 and wen I turn on my heater all it does is blow cold. Even after driving 20 min. I have felt the lines going to the heater core and both are warm. Any suggestions? My a/c blows FREEZING cold like it should.
Tuesday, December 16th, 2008 AT 11:03 PM

7 Replies

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Check the thermostat and heater core-
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Tuesday, December 16th, 2008 AT 11:07 PM
Tiny
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If it was the heater core wouldn't one of those lines be cold?
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Wednesday, December 17th, 2008 AT 12:29 AM
Tiny
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When its partially clogged it 'll get hot on both side-try flushing it out-Have you check the thermostat?
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Wednesday, December 17th, 2008 AT 1:09 AM
Tiny
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I replaced the thermostat not too long ago and my truck will heat up but not overheat so its not closed. And my heater doesnt get warm at all. So if it was partially clogged then it would atleast blow a lol warmth?
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Wednesday, December 17th, 2008 AT 4:30 PM
Tiny
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Try running it w/o the thermostat and see what happens an open thermostat will not give you enough heat to get comfortable or to cause it to overheat
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Wednesday, December 17th, 2008 AT 6:35 PM
Tiny
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Y?
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Thursday, December 18th, 2008 AT 12:14 AM
Tiny
RONDA44
  • MEMBER
  • 2 POSTS
You might want to make sure your heater blend door is working properly. I had the same problem and finally figured out the door was not working and had to have it replaced. The dash will have to be removed for it to be fixed. Good luck.
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Sunday, December 28th, 2008 AT 6:26 PM

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