2006 Toyota Corolla heater problem

2006 TOYOTA COROLLA
1.8L • 4 CYL • 2WD • AUTOMATIC
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WIDEG76
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  • 2 POSTS
The heater puts out hot heat on lower setting when you turn it on high the heat cools down what would cause that to happen
Dec 30, 2014 at 10:27 AM
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BMRFIXIT
  • ✓ASE Certified Mechanic
  • 19,053 POSTS
  • ASE Certified Mechanic
Not enough coolant flowing into the heater core
flush heater core and check heater valve operation
Dec 30, 2014 at 10:31 AM
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WIDEG76
  • MEMBER
  • 2 POSTS
so that would make it not stay hot from one setting to another
Dec 30, 2014 at 10:42 AM
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