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Very strange weerring sound???

Discussion in '1st Gen. Tacomas (1995-2004)' started by 043RZ, Dec 11, 2013.

  1. Jan 20, 2014 at 5:08 PM
    #21
    NightProwler

    NightProwler Formerly 'toendanger'

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    Harlan
    Maricopa, Az
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    01 ext cab prerunner
    I am having a noise too, always been there since i got the truck but getting louder. Mine is more of a grinding noise or that of a pulley being loose, but I replaced the idler pulley as it was wobbly but no fix. I guess I will have to try removing the belts and see if it goes away. But I got to thinking as I stuck my head in close to listen and it sounds like its behind the timing belt cover. I see that there is two smaller idler pulleys inside for the timing belt itself on parts diagrams and wonder if one of those may be bad. Because it does sound like a bearing that is going out and grinding. Anyone ever heard of those going bad and making that grinding noise? It almost sounds like a chain slapping noise too if that helps describe it better, even though it couldnt be that because its a belt not a chain... But thats what it sounds like..
    Oh and the temp does not affect it at all.
     
  2. Jan 21, 2014 at 6:46 PM
    #22
    mechanicmandan

    mechanicmandan Member

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    2.5" add a leaf lift kit, kyb monomax front struts, kyb gas adjust rear shocks
    if its sort of a grinding/growling noise and it sounds like its coming from the front of the engine near the timing belt area id definately look into seeing if your waterpump is bad
     
  3. Feb 25, 2014 at 12:55 PM
    #23
    Beau02

    Beau02 Black Taco

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    Lots of small stuff; Grillcraft MX, Bilstein 5100's, Deck Plate Mod w/ K&N air filter, Airaid MIT, braided SS brake lines, Redline Tuning QuickLIFT hood struts, Extang Full-Tilt tonneau cover, fog light mod, gray wire mod, power outlets on-demand, Diff breather ext, additional contours to passenger side from oak tree.
    I'm having this issue now and found this thread. My belts are tight.

    I checked the power steering fluid level and it was just a shade low & I topped it off, but that didn't make a change. The sound doesn't change during steering, so I wasn't suspecting p/s fluid anyway.

    But, I did the old broomstick to the ear listening trick and it sure seem to me that the sound is coming from the power steering pump. Has anyone had the bearing on the pump go out and make this sound? Is it a safe assumption if that ends up being the culprit I'm in for a whole new pump?
     
  4. Feb 26, 2014 at 6:50 AM
    #24
    tan4x4

    tan4x4 Well-Known Member

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    Do you have a separate belt for the PS, or a serpentine? If you have a separate belt, remove it to see if the noise goes away.
     
  5. Mar 5, 2014 at 4:58 PM
    #25
    Beau02

    Beau02 Black Taco

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    Good call, thanks! I was sure it was the p/s pump, figured the screen was clogged in the reservoir. I got the fluid out and looked at the screen . . . virtually spotless. Pulled the p/s pump drive belt and dammit if the sound didn't stay! Turns out it was the notorious idler pulled bearing for the a/c compressor belt.
     
  6. Sep 16, 2015 at 6:53 AM
    #26
    batcat420

    batcat420 Active Member

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    Bump for an update. Colder weather is slowly creeping in and my truck makes this noise for a few seconds in the morning. I'd like to nip it in the bud quickly.
     
  7. Sep 16, 2015 at 7:07 AM
    #27
    4WD

    4WD cRaZy oLdmAn

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    Maybe fan clutch even, if that hasn't been mentioned yet...
     
  8. Sep 16, 2015 at 10:08 AM
    #28
    NightProwler

    NightProwler Formerly 'toendanger'

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    Harlan
    Maricopa, Az
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    Well I forgot to update a couple threads including this one since my problem. Turned out it was my water pump. I neglected it too long and it locked up on me. I have since replaced everything. But not sure if this is the cause of yalls problem but something to look into. It was the bearings that went bad. Pretty nasty outcome. Shredded the timing belt in the process. But yeah it's all fixed now. Learned my lesson on that one. Ha.
     
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