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A/C not working

Discussion in '1973-1991 K5 Blazer | Truck | Suburban' started by 90K5, Jan 10, 2001.

  1. 90K5

    90K5 1/2 ton status

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    It was warm yesterday, i and tried to turn my A/C on and it doesn't work. I just got it fixed about a year and a half ago. The heater sill works, i think, I'll check later. Where should i check connectons for it? i wish we could do a/c work legally...

    90K5

    See my truck at <A target="_blank" HREF=http://albums.photopoint.com/j/Albumindex?u=1329584&a=9886502>http://albums.photopoint.com/j/Albumindex?u=1329584&a=9886502</A>
     
  2. DMK

    DMK 1/2 ton status

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    If you have not used it in a while your freon more than likely leaked out. You should run your compressor at least once or twice a month to keep seals lubed. You also could have had a small leak. It is not illeagl to work on your a/c. You need to be certified to buy freon. i have the non automotive license. Also you can't evacuate freon into the atmosphere.
     
  3. DMK

    DMK 1/2 ton status

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    Check connections at compressor also connections on the evaporator box, this could be it. More than likly you are low on refridgerent. This happened to my k-10 after sitting for a few months.
     
  4. HarryH3

    HarryH3 1 ton status Author

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    There's a low pressure cutoff switch plumbed into the coolant lines. It prevents the compressor from kicking on when the freon pressure is too low, so the compressor doesn't destroy itself. If you have a slow leak, then the pressure may have dropped below the threshold.

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  5. Gopherkiller

    Gopherkiller 1/2 ton status

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    Check your electrical connections FIRST! Might save you some hassle!
     
  6. NYC K5

    NYC K5 1/2 ton status

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    if you want to check to see if you have any leaks in your system and dont want to waste any r-12 you can use r-22 which is alot cheaper and wont hurt the compressor. when you are finished just realese the r-22 (dont tell any enviromentalists and it will be ok) and have it refiled with the r-12. if your rig is more than 6 years old its very likely that your seals are just worn out and you should be able to replace them yourself.
     

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