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A/C compressor whine

Discussion in '3rd Gen 4Runners (1996-2002)' started by shepherd, Aug 7, 2023.

  1. Aug 7, 2023 at 12:27 AM
    #1
    shepherd

    shepherd [OP] New Member

    Joined:
    Jun 10, 2022
    Member:
    #27425
    Messages:
    18
    Gender:
    Male
    First Name:
    shepherd
    Vehicle:
    98 4r 3.4 5spd 4x4
    3" rough country lift
    Hi guys, 97 3.4L runner. My A/C compressor is making a whining noise when the engine is running. If I rev really high, I see some smoke or something. I took the fan and belt stuff off the front of the engine to isolate that the noise was coming from the A/C. It also seems like the A/C pully doesn't spin around freely. It gets caught when going around. See video. The A/C does work, for now, but the noise is really annoying and I'm sure this can't be good for the compressor pulley

    I did google some stuff but I really only found posts of people talking about a grinding noise. Does this sound familiar to anyone? hope it's an easier fix since I've been through a lot with this truck already xD''''

    YT video of me spinning the pulley with my fingers. Can hear scraping and see quite a bit of resistance
    https://www.youtube.com/shorts/8cJW2_HuNng
     
  2. Aug 7, 2023 at 7:15 AM
    #2
    negusm

    negusm New Member

    Joined:
    Oct 22, 2019
    Member:
    #11745
    Messages:
    2,095
    Gender:
    Male
    Vehicle:
    2002 4Runner SR5 4WD
    Last edited: Aug 7, 2023

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