Front Heat
Hello all new to the thread,
Front heat blows Luke warm at best on driver/passenger side with controls at 90.I do feel temp change when I lower temp. and the air blows out stronger at a lower temp. Rear heat works excellent. Any ideas in which direction to go would be great I have tried and checked a few things so far |
Not know what year. It's unlikely that both temp actuators failed at same time, Do both heater hoses going to cowl get hot to the touch? It could be low coolant or restricted heater core.
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Originally Posted by slowroll
(Post 52377)
Not know what year. It's unlikely that both temp actuators failed at same time, Do both heater hoses going to cowl get hot to the touch? It could be low coolant or restricted heater core.
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Originally Posted by JoeyEscalade
(Post 52389)
It's a 2006 escalade esv. I did check both supply and return heater hoses both are hot.i haven't checked coolant level in radiator itself only in reservoir if it was low wouldn't the rear heat be having same problem?
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low coolant not always rear heater core is lower in relation to front. Will it blow hot out of any duct? Did you hear / feel door stop as you moved it from hot to cold? With dual zone there should be 2 air mix actuators ( L & R). Before I pull dash to check air doors and heater case I would back flush heater core to see if it was restricted.
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Originally Posted by slowroll
(Post 52395)
low coolant not always rear heater core is lower in relation to front. Will it blow hot out of any duct? Did you hear / feel door stop as you moved it from hot to cold? With dual zone there should be 2 air mix actuators ( L & R). Before I pull dash to check air doors and heater case I would back flush heater core to see if it was restricted.
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Garden hose. Carefully take hoses loose. It's possible to break heater core tubes. the Idea is to force water thru return and dislodge blockage on supply side. Good luck,
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Originally Posted by slowroll
(Post 52397)
Garden hose. Carefully take hoses loose. It's possible to break heater core tubes. the Idea is to force water thru return and dislodge blockage on supply side. Good luck,
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If you moved door from hot to cold with actuator off and air stayed cold. it's not electrical.
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