Air comes through vents but no through the defrost vent. Changed out control panel on dash but still no defrost. What could it be?
99 western star defrost
Discussion in 'Western Star Forum' started by Dvg316, Mar 12, 2017.
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Most likely it's your actuator not switching between defrost and vent. See my post here
For a schematic of the air actuated system used back then. -
Does it have a digital display?
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Cool thanks
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Does anybody know howw to get to the blend door on a 4900
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