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
AUTOMOTIVE REPAIR CONTRIBUTOR
19,053 POSTS
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