Volvo RWD 700 Forum

INDEX FOR 10/2025(CURRENT) INDEX FOR 2/2008 700 INDEX

[<<]  [>>]


THREADED THREADED EXPANDED FLAT PRINT ALL
MESSAGES IN THIS THREAD




  REPLY TO THIS MESSAGE    PRINT   SAVE 

760 turbo air con & wiring 700 1988

posted by  someone claiming to be dicko4 on  Tue Apr 1 03:24 CST 2003 [RELATED]

I have just got my first Volvo and would be interested in seeing a wiring diagram specifically as I am hoping that a faulty relay is causing lack of air con. Can anyone help please?








  •   REPLY TO THIS MESSAGE    PRINT   SAVE 

    760 turbo air con & wiring 700 1988

    posted by  Aye Roll on  Tue Apr 1 04:49 CST 2003
    Author: [PROFILE] [EVERY POST] [THREADS] [BEST POSTS] RSS Feed     [IGNORE ALL POSTS]
    last visit: Tue Oct 14 21:08 CST 2014
    [RELATED]

    I'd be very surprised if 15-year old A/C isn't completely discharged, and in need of a new compressor, condenser, hoses, and probably the R134a conversion kit. This is the toughest system to keep working on any old car, and 760s are known to be even tougher than most due to the complicated auto climate control. With any luck, that module is still good and the AC just needs work.
    --
    Rob Bareiss, New London CT ::: "Roterande Fläkt Och Drivremmar!"








    •   REPLY TO THIS MESSAGE    PRINT   SAVE 

      760 turbo air con & wiring 700 1988

      posted by  dicko4 on  Tue Apr 1 20:00 CST 2003
      Author: [PROFILE] [EVERY POST] [THREADS] [BEST POSTS] RSS Feed     [IGNORE ALL POSTS] [RELATED]

      Well thanks Rob thats good to know that at least its a challenge! Since compressor does not kick in I was trying to find a way to at least get that running. Auto climate apart from air con seems to work OK so maye it is not the soldered connections I read about in this forum. Any ideas why compressor wont go -turns ok by hand








      •   REPLY TO THIS MESSAGE    PRINT   SAVE 

        760 turbo air con & wiring 700 1988

        posted by  Aye Roll on  Thu Apr 3 00:49 CST 2003
        Author: [PROFILE] [EVERY POST] [THREADS] [BEST POSTS] RSS Feed     [IGNORE ALL POSTS]
        last visit: Tue Oct 14 21:08 CST 2014
        [RELATED]

        Sorry for delay in response.
        All AC systems have a pressure switch, so that if the system is discharged, the compressor can't kick on. This is because the compressor is lubricated by entrapped oil in the refrigerant. IF no refrigerant, no oil- if no oil, no compressor after about an hour. YOu can locate the pressure switch ( I think it's on your receiver/dryer, back by the firewall, right side) and jumper the wires to make the compressor turn on. If the system is fully discharged, you won't get any cooling, but at least you can verify that the compressor is functional and not seized.
        I'd have a shop do a pressure test (usually charge the system with nitrogen or similar) and/or a vacuum test. If there's nothing obvious, a dye can be added and then detected after it leaks out again.
        This car's a good candidate for conversion to R134a, the Volvo kit is under $70.
        Good luck!
        --
        Rob Bareiss, New London CT ::: 'Roterande Fläkt Och Drivremmar!'








        •   REPLY TO THIS MESSAGE    PRINT   SAVE 

          760 turbo air con & wiring 700 1988

          posted by  someone claiming to be rwturbo on  Thu Apr 3 15:57 CST 2003 [RELATED]

          Well even if you get the system charged you need to throw away the auto climate and install manual from 740 I have all the instructions and diagrams from volvo its simple just get the controler and cable and vaccum harness that leeds to the floor conections and I can help you on the color code differences. Ronniew1975@aol.com







<< < > >>



©Jarrod Stenberg 1997-2022. All material except where indicated.


All participants agree to these terms.

Brickboard.com is not affiliated with nor sponsored by AB Volvo, Volvo Car Corporation, Volvo Cars of North America, Inc. or Ford Motor Company. Brickboard.com is a Volvo owner/enthusiast site, similar to a club, and does not intend to pose as an official Volvo site. The official Volvo site can be found here.