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A/C Noise When Turning On

Discussion in 'General Tundra Discussion' started by kralc8954, Jan 31, 2019.

  1. Aug 13, 2019 at 8:09 AM
    #31
    Hogman9507

    Hogman9507 New Member

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    FreonJohn,

    You got a good point.

    My truck sat 2 days and before I started it up, I went underneath and turned the compressor pulley to see if it showed resistance. It was extremely hard to turn.I waited until I ran the truck and AC, later that day when the engine cooled.The compressor rotated easily by hand
     
    SomeGuy4 likes this.
  2. Aug 19, 2019 at 5:54 PM
    #32
    KEG89

    KEG89 Proud American

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    Ok I’m throwing my truck in the ring. 2019 TRD Pro owned since new, currently has 9.2k miles. After the truck sits a day or more and is started and A/C engaged I too get a loud unhealthy clunk. Someone has to have had luck with a diagnosis:fingerscrossed::annoyed:
     
  3. Aug 21, 2019 at 3:18 PM
    #33
    Kerch71

    Kerch71 Surgical Precision

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    My 2014 just started doing this yesterday. To me, it sounds like it might be tensioner related. Only after it sits for awhile, and the sound goes away quickly. I wonder if it's related to humidity and the fact that lately my ac has been run to death cause it's SO miserable right now in central VA. Or, something is about to break. Guess I'll wait and see.:boom:
     
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  4. Sep 17, 2019 at 6:35 PM
    #34
    AdamB5280

    AdamB5280 New Member

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    Same here 18 Platinum 25k miles. Getting a sound from the a/c. Thinking it might be the fan motor? It comes and goes, definitely annoying! Can't believe Toyota doesn't have a diagnosis with how common this issue seems to be.
     
  5. Nov 3, 2019 at 2:45 PM
    #35
    Cghuser

    Cghuser New Member

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    I own a 2019 5.7 has about 33k on it and owner since brand new. I hope this comes to resolution soon as I am almost out of factory warranty. Has anyone heard anything? Mine does exactly what everyone else has explained, once while coasting it actually shuddered the gas pedal and motor and once while at idle after starting. It’s got to be the clutch or tensioner but it’s not very smooth whatever it is.
     
  6. Nov 4, 2019 at 5:42 PM
    #36
    Mr Badwrench

    Mr Badwrench I don't do stuff real good sometimes.

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    Mine does it. It sounds terrible. Only happens after leaving it parked over night, or when it is cold outside. When I push the AC, button "CLUNK".

    Can't wait to replace the AC compressor, it is so conveniently located!
     
  7. Nov 4, 2019 at 6:55 PM
    #37
    bigandtall

    bigandtall New Member

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    On mine it sounds like a large metallic mid range chirp.
     
  8. Nov 4, 2019 at 8:02 PM
    #38
    Silv333

    Silv333 Patriot

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    Please let us know if you hear back.
     
  9. Nov 7, 2019 at 10:34 AM
    #39
    mi4

    mi4 New Member

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    I guess my 19' CrewMax with 1200 miles has same issue. To confirm, I took a short clip https://youtu.be/MM7pPGatitQ Since I lost my key (probably when working on the truck), now I always think I dropped the key under the hood and relate any suspicious noise to it. :(
     
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  10. Nov 7, 2019 at 10:41 AM
    #40
    Silv333

    Silv333 Patriot

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    YUP, that’s the noise!
     
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  11. Nov 7, 2019 at 10:52 AM
    #41
    mi4

    mi4 New Member

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    Thanks for confirming that. I am surprised and disappointed that Toyota can't figure out what this noise is after so many people experience it.
     
  12. Nov 7, 2019 at 11:08 AM
    #42
    Silv333

    Silv333 Patriot

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    We all feel the same way, sounds like shit and I’m embarrassed when it happens and others around me hear it.
     
    Tundyfundy likes this.
  13. Nov 11, 2019 at 7:13 AM
    #43
    marinakorp

    marinakorp New Member

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  14. Feb 1, 2020 at 3:30 PM
    #44
    Charlo75

    Charlo75 New Member

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    Same here on my 2019 Crewmax with 10.7K miles. It's done it periodically since I got it in July of 2019. Happened again today for the first time in a while. Temp outside was 63°. Low last night was 35°. It was not humid. Luckily I had my dash cam on and pressed the AC button after it was recording. I'll use that at my dealer the next time I take it in.
     
  15. Feb 1, 2020 at 3:34 PM
    #45
    14burrito

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    Having issues myself. Compressor is loud when activating and regardless of settings - compressor is always engaged. Turns out my AC amplifier is being replaced.
     
  16. Apr 2, 2020 at 6:39 PM
    #46
    lev

    lev New Member

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    Hi all I have a 2014 tundra 5.7 40k Noisy a/c compressor, noise is available al the time when on. At idle sound as though it rattles at speed or when accelerating it sounds like a super charger. I have never heard of an a/c amplifier! has anyone fixed their problem. I am pricing a/c compressors as we speak.
     
  17. Apr 2, 2020 at 7:22 PM
    #47
    SuperWhite20

    SuperWhite20 New Member

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    Let it sit for a few days. Then video outside while someone turns it on. Try the catch the clutch and the belt. Mine does this too. I believe it is the refrigerant and oil has settled in the compressor and shocks the belt when engaging the compressor. I have experienced this in other vehicles. I have worked with other refrigerants but not the R1234YF yet.
     
  18. Apr 10, 2020 at 6:50 PM
    #48
    Mamba

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    same issue here on a 2020 1794 with 2k miles. This sucks
     
  19. Apr 13, 2020 at 12:51 PM
    #49
    Chris31909

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    Mine does the same thing, probably another normal noise the truck makes along with the others
     
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  20. May 8, 2020 at 3:15 PM
    #50
    Dodger46

    Dodger46 New Member

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    My 2019 does it too with 13,000 miles on it. Anyone heard of a fix? The sound is pretty intense to ignore.
     
  21. May 8, 2020 at 3:27 PM
    #51
    lev

    lev New Member

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    This noise is a bad compressor just replaced the one on my 2014. I did not notice the noise till just after the warranty was out. If you are under warranty get it taken care of and get a rental on the house.
     
  22. May 11, 2020 at 8:50 AM
    #52
    Pucks18

    Pucks18 Panic mode

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    @lev Typical new gen toyota junk
     
  23. May 19, 2020 at 11:31 AM
    #53
    Joe333x

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    I have this same noise on my 2019.
     
  24. May 19, 2020 at 12:21 PM
    #54
    Hogman9507

    Hogman9507 New Member

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    Anyone found a fix for this AC noise yet

    I think FreonJohn was spot on
     
  25. May 19, 2020 at 12:27 PM
    #55
    Jernik

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    Add another. 2020 SR5 w/1200 miles. Done it since I brought it home.

    I think the worst part is trying to explain to the wife how it appears to be "normal". And yes, Toyota, the noise is bad enough our wives are even noticing it! :rofl:
     
  26. Jun 11, 2020 at 3:37 AM
    #56
    co2owen

    co2owen New Member

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    Add one more. I have a 2020 with 3,000 miles. I've noticed the noise twice but after two times I searched this site and of course I found others had documented it. Once yesterday afternoon (95 degrees and sunny) and once two afternoons ago (90 degrees and sunny). Both times it happened, the AC was already on and the noise happened during start-up. Both times, the truck had sat for 24 hours. Today I'm going to start it with the AC off and then turn it on after it's running. The noise that @mi4 has in the video is the exact noise I hear.
     
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  27. Jun 11, 2020 at 4:42 AM
    #57
    Freonjohn

    Freonjohn New Member

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    If I had to take a guess I think it’s because a Suction accumulator is no longer used but instead has been replaced with a liquid to suction heat exchanger.
    The accumulator is to prevent liquid refrigerant from making its way to compressor
    the heat exchanger won’t, its there for efficiency purposes

    Just my opinion as a 29 year commercial refrigeration technician
     
  28. Jun 11, 2020 at 5:04 AM
    #58
    Cpl_Punishment

    Cpl_Punishment Mother-Loving Member

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    Isn't liquid to a compressor a very bad thing? How do you keep it from tearing itself apart without a suction accumulator?
     
  29. Jun 24, 2020 at 9:59 PM
    #59
    jvt3

    jvt3 New Member

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    Mine has that very strong "clunk" sound too when turning the AC on for the first time each day......on a fairly new truck. There's no
    way to know how common this is among Tundra owners though....I hope it's considered "normal".
     
  30. Jun 25, 2020 at 7:11 AM
    #60
    co2owen

    co2owen New Member

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    I've not had the AC noise since my last post. Not sure why it came and went. No noise now when starting truck up with AC already on or starting truck up and then turning AC on. It'll probably come back, but for now it's gone.
     

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