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#1
06-09-2026, 06:38 PM
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Found the issue, someone put temp switch probe on the a/c line that gets real cold quickly. I moved to the evap core seems ok now
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#2
06-10-2026, 10:08 PM
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Glad you found it. 1977 Firebirds used an evaporator temp switch to control clutch cycling, so I didn't know if the GP did too. By 1979 for sure I've seen pressure cycling setups only.
Pressure cycling switch on the accumulator became the standard for decades after that. I love the simple orifice tube systems.
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