I would question the condition of your serpentine belt first.
If the compressor siezed intermittently, you should have billows of smoke from either the clutch or the inside face of the belt.
Steve
98 Contour SE Sport 2.5 Duratec ATX The wifey's car
89 Taurus SHO - 246K miles
94 SHO ATX - 190K
1997 F-150 5.4L ATX - The Workhorse 150K.
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