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Screeching that wakes the neighborhood

Discussion in '1st Gen Tundras (2000-2006)' started by Northcoast101, Mar 24, 2020.

  1. Mar 24, 2020 at 12:20 PM
    #1
    Northcoast101

    Northcoast101 [OP] New Member

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    02 Tundra, 120K. Just started screeching.... on startup it either screams super loud and appears that the fan stops spinning...? Or it will start without doing that and just Squeak or chirp loud enough to be bothersome. From what I’ve been researching it’s either going to be and idle Tensioner Or a fan clutch replacement....or.... possibly any of the pulleys on the front of the engine... Am I on the right track? I’m going to try and repair this myself I’m somewhat competent with a wrench .. I need some help and support before I start this...
     
  2. Mar 24, 2020 at 12:31 PM
    #2
    Northcoast101

    Northcoast101 [OP] New Member

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    Been trying to upload a video of it in action... but it’s not accepting my file....
     
  3. Mar 24, 2020 at 12:32 PM
    #3
    NoRcptn

    NoRcptn Mediocre Poster

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    does it go away once you start driving?
     
  4. Mar 24, 2020 at 12:39 PM
    #4
    Northcoast101

    Northcoast101 [OP] New Member

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    No..... it chirps and squeaks fairy consistently while driving.... it will quiet down occasionally at higher speeds
     
  5. Mar 24, 2020 at 12:44 PM
    #5
    NoRcptn

    NoRcptn Mediocre Poster

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    Sorry, it's a little unclear. Did you see the fan stop spinning? Yes, it could be belt tension. I could see the fan clutch no-spin situation , but haven't see that in person. I've had and heard the alternator (pulley bearing) do the same thing. This is pretty easy too hear with your head close to hit and some light throttle. Stay away from the fan and moving belts though.

    Let's see the video....
     
  6. Mar 24, 2020 at 1:42 PM
    #6
    PCJ

    PCJ New Member

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    Worn serpentine belt could cause it also.
     
  7. Mar 24, 2020 at 3:48 PM
    #7
    CodyP

    CodyP New Member

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    Take the serp belt off and spin the pulleys individually to see which one has a bad bearing.
     
  8. Mar 24, 2020 at 3:55 PM
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    FrenchToasty

    FrenchToasty Desert rat

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    My idler was a bit wonky when I replaced my belt, so ordered one and slapped it in the next weekend. I didn’t have screeching sounds yet though
     
    Inquiringone likes this.
  9. Mar 25, 2020 at 10:02 AM
    #9
    SouthPaw

    SouthPaw New Member

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    That is the best/easiest way.

    I had an intermittent cold squeak so I changed the belt and checked all the pulleys. Noise still persisted but always went away once it got warm so I just left it alone. It wasn't till I had my timing belt and water pump replaced that my mechanic noted that one of the timing belt idler or tensioner bolts (can't remember which one) was almost seized on and actually broke when he tried to remove it. He was able to extract it and replace it but I am fairly certain which ever pulley was riding on that bolt was the culprit.
     
  10. Mar 25, 2020 at 10:04 AM
    #10
    AzureNightmare

    AzureNightmare Geek in a Tundra

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    IIRC you have to upload the video to youtube or some other source, and then you can just copy and paste the URL.
     
    Northcoast101 [OP] likes this.
  11. Mar 27, 2020 at 12:31 PM
    #11
    Northcoast101

    Northcoast101 [OP] New Member

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    Ok great .... good stuff..... when I turn the ignition 2 out of 3 times it will scream loudly and I notice the fan is NOT spinning, engine is running.... sounds like HELL and it worries me that I’m ruining something... so I don’t let it go to long...( I’ll attempt a video upload soon)... it does that a couple times and then it starts normally with only a squeaking that’s loud enough to hear from the sidewalk as you drive down the road. The sound disappears intermittently while driving, usually while At higher speeds or accelerating but the squeaking/ chirping never completely goes away..... I will start work on it in a few days when the paycheck comes and try all the pulleys like you guys have said. Question......? Can I drive it until then? Or an I just asking for a break down with possibly more damage and a tow home?
     
  12. Mar 27, 2020 at 2:17 PM
    #12
    CodyP

    CodyP New Member

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    I wouldn't drive it unless you have to to get to work or something. I don't know about our trucks but typically the fan won't engage unless the A/C is on or the engine is at operating temp and the fan is needed. You could spray some WD40 on the center of the pulleys (not the outside rim) where the bearings are and see if that takes the squeal away.
     
    Last edited: Mar 27, 2020
    Northcoast101 [OP] likes this.
  13. Mar 27, 2020 at 4:32 PM
    #13
    Professional Hand Model

    Professional Hand Model A.K.A ‘Golden Hands’

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    Pulley bearing(s) probs. Strategic squirts with Penetration Oil one at a time will help you eliminate the exact one making the noise. Process of elimination.
     
    Northcoast101 [OP], CodyP and bmf4069 like this.
  14. Mar 27, 2020 at 7:21 PM
    #14
    foxtrapper

    foxtrapper New Member

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    As @PCJ suggested, the serpentine belt itself makes a heck of a squeal when it’s worn.
     

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