2006 E450 Air Shifts to Defrost
#1
2006 E450 Air Shifts to Defrost
My 06 e450 super duty (cut away with motor home) has an issue with the ac defaulting to defrost on hills. A new vacuum reservoir has been mounted under dash, new hose from manifold to reservoir, and a check valve in the supply line. What I am asking if others have had this issue despite repairing the vacuum supply system and how they repaired it.
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