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Old 06-15-2007, 09:02 PM
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heater control

Hey guys,
I have a problem with a 1998 chevy blazer. I just fixed the A/C and it is still blowing hot air. I noticed that both heater hoses are hot and it seems like the temp control is not working. Is there any way to check to see if it is working or not?

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Old 06-16-2007, 03:28 PM
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The 2 heater hoses being hot doesn't mean anything. Hot water always circulate thru the heater. The temp control just directs where the air flow thru--either the heater, heater-then defrost duct, or a/c and vent.
Check the vacuum motor that moves the air duct baffles.
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