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Thread: Discovery 1 (early) Ac Problem

  1. 11th November 2010, 02:05 PM #1
    Phoenix's Avatar
    Phoenix
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    Discovery 1 (early) Ac Problem

    I'm posting this in electrical as well because I think that is where the problem lies.

    Ok, some history. When I got the discovery last year (early 1994 [my1993] 200TDi) the ac was not functional.

    The belt was missing, the belt tensioner mount had been snapped and the tensioner gone! Replaced all of the above, had it regassed and tested and it worked well. Sometimes one of the relays would buzz when starting her up with the AC on. My Mech also said another part of the system was a bit sorry. Condensor, dehumidifier??

    Anyway, it's warming up now, and I tried it the other day. Nothing.

    The engine didn't appear to be laboring when it was turned on (changing in note at all) so I checked and the center part of the AC pump stays unmoving when it is turned on, indicating that the clutch is not engaging ??

    Fuses appear fine. I thought it was a relay, but I replaced the buzzing one, and it just clicked, but the next day, started buzzing again.

    I have a haynes manual, but it has no complete wiring diagram. I've not seen a factory manual for one this age. And the list of relays is ambiguous, and there is more relays in the three locations than it lists. Any ideas??
    1994 Discovery TDi
    2004 Discovery 2 TD5
    2010 Discovery 4 TDV6
    1961, Series 2 Ambulance. 108-098 - Eden

    Registry of Ex Military Land Rovers Mem. 129
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  2. 11th November 2010, 02:09 PM #2
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    Scouse
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    Gas leaked out maybe. The compressor won't enagage this happens.

    Have you been using the A/C regularly ?
    It should be run for a few minutes each week to keep the seals lubricated.
    Scott
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  3. 11th November 2010, 02:52 PM #3
    PhilipA
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    If it has separate low pressure and high pressure switches on teh receiver dryer, bridge both in turn . If the compressor then starts, you have Identified the low pressure switch and you have no gas.
    If there is only one switch bridge the wires on the switch on top and ditto.
    Don't run it long.
    Regards Philip A
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  4. 12th November 2010, 06:58 AM #4
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    Quote Originally Posted by Scouse View Post
    Gas leaked out maybe. The compressor won't enagage this happens.

    Have you been using the A/C regularly ?
    It should be run for a few minutes each week to keep the seals lubricated.
    Mmm, No

    Hopefully not that, but it sounds like a visit to my mechanic may be in order for a quick look.

    Phil, that sounds like a good idea, I may have to try that one!!
    1994 Discovery TDi
    2004 Discovery 2 TD5
    2010 Discovery 4 TDV6
    1961, Series 2 Ambulance. 108-098 - Eden

    Registry of Ex Military Land Rovers Mem. 129
    Defence Transport Heritage Tasmania Member
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  5. 12th November 2010, 12:34 PM #5
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    yup, no gas
    1994 Discovery TDi
    2004 Discovery 2 TD5
    2010 Discovery 4 TDV6
    1961, Series 2 Ambulance. 108-098 - Eden

    Registry of Ex Military Land Rovers Mem. 129
    Defence Transport Heritage Tasmania Member
    Reply With Quote Reply With Quote
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