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Cold start grinding

Discussion in '2nd Gen. Tacomas (2005-2015)' started by AZ2013, Oct 13, 2015.

  1. Oct 13, 2015 at 11:05 AM
    #1
    AZ2013

    AZ2013 [OP] Well-Known Member

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    Blake
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    Anyone have a real short "crunch" or grind when they first kick on their AC? Only happens on a cold start, typically after the first time I start the truck for the day. AC still blows super cold. Dealership says it's normal, but we all know how iffy those guys are. I bought the truck used 6 months ago so I don't know if it's always done it since new.

    2013 DCSB 4WD
     
  2. Oct 13, 2015 at 2:19 PM
    #2
    LEBM

    LEBM Thread Killer

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    Eleanor, WV
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    15 DCSB TRD Sport 4x4 - Pyrite Mica
    Post a video or sound clip.
     
  3. Oct 13, 2015 at 3:54 PM
    #3
    AZ2013

    AZ2013 [OP] Well-Known Member

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    I'll see if I can get one tomorrow.
     
  4. Oct 13, 2015 at 6:27 PM
    #4
    tacoma4

    tacoma4 Well-Known Member

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    My tacoma doesn't do it, but I had a civic that did exactly that. Sounded like sandpaper on the compressor clutch being crushed the first time I turned the AC on each day. After that it could go on and off without an issue. Never did cause a problem, compressor lasted for years doing it and never crapped out. Dunno what causes it
     
  5. Oct 13, 2015 at 6:31 PM
    #5
    SilverSurfer

    SilverSurfer Well-Known Member

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    Mark
    Los Angeles
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    2013 4X4 TRD-Sport
    TRD Exhaust
    Mine does this but only when its hot I have to wait to hear the Vacuum from the engine before I turn on the AC otherwise it will make a grinding noise. Curious whats grinding, maybe someone can chime in, was going to have the dealer look at it but forgot until I read this thread.
     
  6. Jul 10, 2017 at 5:06 AM
    #6
    Riding Dirty

    Riding Dirty Sinner; saved by grace

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    Before: '16 TRD OR 4x4 AC QS//After: 17 T4R Pro 040
    PlastiDip
    Any resolving of the issue? I get this only after my truck has sat for a few days then go to use the AC, it has a quick grinding noise, then stops and works just great.
     
  7. Jul 10, 2017 at 1:13 PM
    #7
    fla_sun

    fla_sun Well-Known Member

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    You can remove the compressor clutch and dress up the mating surfaces. I did this using 60 grit sandpaper just lightly touching up the surfaces. Completely quiet now. Remove the drive belt then use a compressed air tool or else a strap to hold the clutch when removing the 8mm bolt. Snap ring pliers are needed to remove the pulley/bearing unit and coil unit.
    I just ordered a new clutch assembly for later as it seems to take a beating with all the on/off cycles this compressor does.
    BTW, the bearing is staked on the pulley.

    New clutch on, no noise during engagement.

    IMG_0272.jpg new clutch CA-935
    IMG_0274.jpg old and new
     
    Last edited: Jul 12, 2017
    Riding Dirty likes this.

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