1987 Cadillac 5.0-liter V-8

Dear Doctor: I own a 1987 Cadillac 5.0-liter V-8. My problem is the a/c got very weak this year. It does not blow as cold as it used to. Before I take it into the shop what can I expect for a repair and at what cost? Andy

Dear Andy: It sounds like the refrigerant has leaked out, which is not unusual on a vehicle as old as yours. A simple recharge will usually make the a/c cold again. A conversion from the old R12 to the new friendly R134a is simple and inexpensive. — Junior Damato, Motor Matters

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