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Another Air Conditioner Problem 850 1993

posted by  someone claiming to be RAM on  Wed Jun 26 05:44 CST 2002 [RELATED]

Here's a new twist on the A/C problems. The A/C comes on when the car first starts, and blows very cold - just like it did when failry new. After about 5 minutes, it stops cooling and blows outdoor air (the recirc switch is off) with a bit of a damp smell to it. If I turn off the A/C switch and wait about 5 minutes, then turn it back on again (without adjusting the thermostat settings or anything else), it blows cold again (for about five minutes again). OR, if I gun the engine to about 4k rpm, it comes back on!! Found this out accidentally while accelerating onto a highway. I doubt that it's a charging problem, because it seems to cool OK when it's on; it just won't stay on long enough.








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    Another Air Conditioner Problem 850 1993

    posted by  Keithp on  Wed Jun 26 22:23 CST 2002
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    A few things to check.

    If you have recently refilled the system with refrigerant, it may have a little too much charge and the system high pressure switch is cutting it off.

    There is also a thermostat on the back of the compressor to prevent overheasting. It may be faulty.

    KP








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      Another Air Conditioner Problem 850 1993

      posted by  Sandro on  Sun Jun 30 13:23 CST 2002
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      I had the same problem and they replaced a pressure sensor switch near the firewall. The problem was that the compressor would never shutoff. This has to cause something to freeze (temp). I agree is could be that the system has too much refigerant, but wouldn't they have to drain the system before they change the part?








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    Another Air Conditioner Problem 850 1993

    posted by  someone claiming to be hf63 on  Wed Jun 26 16:40 CST 2002 [RELATED]

    Ram,
    I would start by just replacing the fuse with a new one and would check the relay for system its behind the glove box. volvospeed.com has some good instructions and as a final item is the computer that controls the system assuming that you an electronic climate control system.







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