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Heat blows warm air

Tiny
LESA WALLS
  • MEMBER
  • 2003 SATURN VUE
  • 3.0L
  • V6
  • AUTOMATIC
  • 156 MILES
We have heating problems. We flushed it and changed the thermostat and it blows warm air. Please help we are out of options.
Saturday, October 21st, 2017 AT 3:49 PM

3 Replies

Tiny
MHPAUTOS
  • MECHANIC
  • 31,937 POSTS
Feel the temperature at the heater hoses in and out of the core at the fire wall, are they both the same temperature?Both hot? If not you may have a blocked heater core and if both are hot to touch, the blend door may be stuck and not allowing hot air to flow into the cabin, have these checked first.
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Sunday, October 22nd, 2017 AT 5:39 AM
Tiny
LESA WALLS
  • MEMBER
  • 2 POSTS
Done that. Could it be a weak water pump that make it do that?
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Sunday, October 22nd, 2017 AT 6:47 PM
Tiny
SATURNTECH9
  • MECHANIC
  • 30,869 POSTS
Just to add this one the water pump is not going to be weak they always work. If you have one warm heater hose and one heater hose going into the heater core at the firewall you have a restricted heater core like mhpautos mentioned earlier.
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Sunday, October 22nd, 2017 AT 7:30 PM

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