HEATER WILL BLOW COLD AIR AND SOMETIMES IT WARMS...

  • Tiny
  • Anonymous
  • 2003 Pontiac Montana
  • 150,000 miles

Heater will blow cold air and sometimes it warms up, but mostly cold, what could be problem

Saturday, November 10th, 2012 AT 7:49 PM

2 Answers

  • Tiny
  • hmac300
  • Expert
  • 41,681 posts

Make sure hoses are both hot on heater when engine warm. Then you'll hav eto check actuator in heater box. Pic is of actuator but it shold be scanned to see what is wrong

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Saturday, November 10th, 2012 AT 7:58 PM
  • Tiny
  • johnviallet
  • Member

I think your water pump is needing replacement as this was the problem same problem that I had

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Monday, November 19th, 2012 AT 5:25 AM

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