1999 Ford Expedition, the heater is blowing cold air. What might be causing this problem?

Tiny
RJSTES
  • 1999 FORD EXPEDITION
  • 15,000 MILES

When is heater **** is all the way to heat with high fan it blows cold air.

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Monday, December 19th, 2011 AT 10:38 PM

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Tiny
SATURNTECH9
  • EXPERT
  • 30,732 POSTS

The first thing I would do is make sure both your heater hoses going into the heater core are getting really hot when the engine is up to normal operating temp.

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Monday, December 19th, 2011 AT 11:15 PM

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