NISSAN HEATER BLOWS OUT COLD AIR

  • Tiny
  • Randy77
  • 2001 Nissan Maxima
  • 11,000 miles

Nissan heater blows out cold air

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Wednesday, December 7th, 2011 AT 4:16 AM

6 Replies

  • Tiny
  • saturntech9
  • Expert
  • 29,852 posts

The first thing I would check is if both heater hoses going to the heater core are getting really hot when the engine is fully warmed up.

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Wednesday, December 7th, 2011 AT 4:23 AM
  • Tiny
  • Randy77
  • Member

Sorry where's the heater core and heater hose located

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Wednesday, December 7th, 2011 AT 4:31 AM
  • Tiny
  • saturntech9
  • Expert
  • 29,852 posts

Base of the windshield follow that down towards the middle you will find two hoses going to the heater core.

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Wednesday, December 7th, 2011 AT 4:35 AM
  • Tiny
  • Randy77
  • Member

If they are cold and not hot what then

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Wednesday, December 7th, 2011 AT 4:40 AM
  • Tiny
  • mhpautos
  • Expert
  • 30,587 posts

If cold there is no circulation, either a faulty heater tap or a blocked heater core.

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Wednesday, December 7th, 2011 AT 11:23 AM
  • Tiny
  • saturntech9
  • Expert
  • 29,852 posts

If one is hot blocked restricted heater core if both is hot blend door issue or blend door control issue.

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Wednesday, December 7th, 2011 AT 6:30 PM

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