Heater blows hot air at 1500 RPM but at idle air.

Tiny
ANONYMOUS
  • 2008 NISSAN XTERRA
  • 98,578 MILES

Heater blows hot air at 1500 rpm but at idle air goes cold where I'd the water pump on this truck 4.0 ltr.V6

Friday, December 7th, 2012 AT 11:56 PM

1 Reply

Tiny
HOMER1967
  • EXPERT
  • 899 POSTS

I would say based on the symptoms that you most likely have a restriction in the cooling system, most likely the heater core. Try doing a good cooling system flush.

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Saturday, December 8th, 2012 AT 4:30 AM

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