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does it have a full freon charge? 24 year old vehicle it may have leaked out, there are several connections that may need to resealed with new o rings.
You can add freon without the compressor running. There is a pressure switch in the system that prevents the compressor from operating when the freon pressure is too low. Just add some freon and once the pressure increases, the AC clutch will engage.
Had a car with same problem. Was temperature sensor. Do you know how to check relays? And do you know how to use paper clip and jump relay switch in fuse box? You need to jump relay to make sure air compressor is working to fill with freon.
Check to see if you have power at your AC, then have to check to see if you have power and ground at relay pins, if not trace wires, also your relay could be bad to
The most common cause of no clutch engagement is a low state of refrigerant charge in the system. Have a set of AC pressure gauges hooked up and bypass the compressor cycling switch and check the pressure on the low side charging port, you show shop 28-32 PSI at idle.
If there is no r-12 or freon in the system it wont come on. Try jumping the pressure switch. It's a 2 wire plug somewhere one the AC lines. Just pull it off and jump the wire end with another wire.If the clutch engages you need freon or R-12.
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