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How do you replace an AC expansion valve on a 1995 Chevy Camaro Z28?
Wiki User
∙ 16y ago
you have to close the outlet valve with the system running. its called a pump down. when you have that done close the inlet valve. now you should have all your refrigerant in the compressor and accumulator. now you have to sweat out the valve and braze in a new one. next you must suck the open part of the system into a vaccum and have it hold at 19 inches for 24hrs. if it passes then you can reopen your valves and start the system back up. hope it helps
Wiki User
∙ 16y ago
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