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A/C Pressure Switch

Discussion in 'The Garage' started by PonchoCatalina, Aug 7, 2005.

  1. PonchoCatalina

    PonchoCatalina Registered Member

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    The air conditioner on my Suburban just started acting up, and the problem seems to be the low pressure cutoff switch (the compressor clutch engages when jumpered and low-side pressure looks fine with a gauge). Can I just unscrew the switch from the accumulator and replace it, or do I have to evacuate the system first? I didn't want to unscrew the switch and discover a high pressure jet of freon hiding behind it. Thanks.
     
  2. HarryH3

    HarryH3 1 ton status Author

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    You can just unscrew it. There's a Shrader valve in the fitting that prevents massive freon escape. :cool1:
     
  3. cbbr

    cbbr 1 ton status GMOTM Winner

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    Exactly, just be sure not to torque it down too much - its plastic and will break. Ask me how I learned this. :doah:
     
  4. sandawgk5

    sandawgk5 3/4 ton status

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    HIJACK where did you find the replacement switch I have done a few searches and can not find anything.
     
  5. cbbr

    cbbr 1 ton status GMOTM Winner

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    Napa. It was about $12.00.
     
  6. sandawgk5

    sandawgk5 3/4 ton status

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    Thanks end hijack
     
  7. cbbr

    cbbr 1 ton status GMOTM Winner

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    I also got one at Carquest. It is Murray PN 35751. I don't have the NAPA PN.
     

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