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rough idle with a/c

Discussion in 'General Chevy & GM Tech Questions' started by willardearl76, Apr 5, 2010.

  1. willardearl76

    willardearl76 New Member

    When I have the A/C on the engine has a rough idle. Also, when any fan setting is on, the A/C compressor cycles on and off.

    Is this normal?

    Is there anyway to determine if a compressor is on it's last legs?
  2. wis bang

    wis bang Rockstar 100 Posts

    If the compressor cycles it is low on freon...
  3. Chris Miller

    Chris Miller Rockstar 100 Posts

    Also, the pressure could be too high. If there's a clog somewhere in the lines, the pressure will go up rapidly, and the pressure cut-out switch on the condenser will cut power to keep from hurting the compressor.

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