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Old 04-15-2019, 07:16 AM   #2
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Join Date: Jan 2012
Location: Lyman,ME.
Posts: 1,342
Default Re: heater control valve

It controls how much water goes thru the heater core. More water more heat. Less water less heat. It controls the temp of the air when you run the fan..... Mark
I'm thinkin' about crankin'
My ragged ol' truck up
and haulin' myself into town.
Billy Joe Shaver
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