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very loud squeal at cold start up

Discussion in '2nd Gen. Tacomas (2005-2015)' started by tinker2, May 17, 2011.

  1. May 17, 2011 at 7:45 PM
    #1
    tinker2

    tinker2 [OP] Well-Known Member

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    When I start my truck after setting over night it squeals very loud. I think it is a pulley or the tensioner or the alt. are any of these parts covered under the power train warranty?
    I searched and couldn't find anything, maybe I didn't word it right.
    Thanks for any feedback.
     
  2. May 17, 2011 at 7:55 PM
    #2
    medic2230

    medic2230 Ditch Doctor

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    Have you washed the engine or sprayed anything on it where it could have gotten on the belts? Could just be that the belts are loose.
     
  3. May 17, 2011 at 7:59 PM
    #3
    steve o 77

    steve o 77 braaap

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    tighten or replace the serpentine belts.
     
  4. May 17, 2011 at 8:08 PM
    #4
    tinker2

    tinker2 [OP] Well-Known Member

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    No haven't washed the engine or done anything, it just started this a few days ago. The truck only has 55,000 miles on it, I can't imagine the serpentine belt could be bad already ?
     
  5. May 17, 2011 at 8:21 PM
    #5
    BLKTRD6SP

    BLKTRD6SP Well-Known Member

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    I've got a weird squeal / grinding noise on start up sometimes. Took to dealer and of course they could not duplicate the problem. :mad:
     
  6. May 17, 2011 at 8:31 PM
    #6
    tinker2

    tinker2 [OP] Well-Known Member

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    I don't think you can tighten the belt on these thrucks, auto tensioner.:notsure:
     
  7. May 17, 2011 at 8:32 PM
    #7
    NelsonTacoma

    NelsonTacoma This is my derpawayinator!!!!!

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    As stated before, it's most likely the serpentine belt. The best way to test this is when you first start it up spray the belt with wd-40 or brake cleaner anything that lubricates will work, if the squealing goes away it's the belt, if not then it's a bearing somewhere.

    That's correct.
     
  8. May 17, 2011 at 8:38 PM
    #8
    tinker2

    tinker2 [OP] Well-Known Member

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    Thanks, I'll try that.
     
  9. May 17, 2011 at 8:54 PM
    #9
    snowgod06

    snowgod06 UG legend wannabe

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    crap bolted and welded together....
    I've pretty much tried everything on mine and it still squeks. I've given up truing to fix it. I just let it warm uo for a few and it goes away.
     
  10. May 17, 2011 at 9:35 PM
    #10
    Greg337

    Greg337 Member

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    I think I may have experienced the same squeal. It was during a week brutally cold -10 to -15 days. The battery had a bit of a struggle at each start and when the engine fired up it there was a loud squeal that occurred for 1 or seconds and abruptly stopped. I waited for 10 of the longest coldest minutes of my life to let the engine temp warm up enough to register on the gauge before setting off each time. My truck is about a year old and has less than 10K miles so I am pretty confident that there isn't any wearing out. I have no idea where the sound came from and it stopped once the temperature warmed up so... I dunno?
     
  11. May 17, 2011 at 9:47 PM
    #11
    steve o 77

    steve o 77 braaap

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    It was the belt. The cold will do that to the rubber.
     
  12. May 18, 2011 at 12:20 PM
    #12
    tinker2

    tinker2 [OP] Well-Known Member

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    Update: I just got a chance to look over the belt and pulleys. When I started the engine it was squealing, shut off engine and put a socket and ractchet on tensioner and worked it back and forth, restarted engine still squealing, turned off engine. Gave the inside of the belt a little shot of deep creep and the squeal went away, looks like its the belt.

    Thanks for all the replys. :yay:
     
  13. May 19, 2011 at 6:37 PM
    #13
    NelsonTacoma

    NelsonTacoma This is my derpawayinator!!!!!

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    Glad to hear you got it figured out!!! :D:D:D:D:D:D:D
     
  14. May 19, 2011 at 9:42 PM
    #14
    trd09

    trd09 Well-Known Member

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    When I cold start below 10 degrees I get a quick squeal (even when new). It's the property of the belt material.
     
  15. Sep 6, 2013 at 2:21 PM
    #15
    Evenflow

    Evenflow Well-Known Member

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    I have had the same problem twice (110k miles ) and in both cases a new belt resolved the issue. I could spray a silicon based lube on the inside of the belt and would it instantly go away.
     
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