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AC runs fine on 1994 Buick Roadmaster when relay on passenger side of engine side firewall is jumpered. AC guy thinks computer is not sending signal because R139A once ran dry. How to reset computer?
Wiki User
∙ 15y ago
if your pressure on the low side is ok which is 25lb to 45lb then check your low pressure switch if the pressure is too low then the switch wont close there for the current wont go to the relay there for it wont be powered.
Wiki User
∙ 15y ago
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