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L67 calais pulley? Belt?

Discussion in 'VT - VX Holden Commodore (1997 - 2002)' started by Emilyrose, Aug 28, 2019.

  1. Emilyrose

    Emilyrose New Member

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    Help me!
    My l67 commodore Is making a horrible noise
    I'll link a video down below

    Thought at first maybe the supercharger but disconnected the belt and the noise is still there
    Supercharger only recently had a new belt put on and oil change

    Had people say pulley
    People say belt, water pump etc...
    Its not the best video but I'd like to not spend money I don't have to

     
  2. _R_J_K_

    _R_J_K_ Well-Known Member

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    Could be anything from that video, might help if the bonnet was open so we could hear it properly.

    Have you done any other trouble shooting? Any hard to rotate idler pulleys? Does it increase with RPM? Does it go away if you put the air-con on? Does it change pitch when you steer lock to lock?
     
  3. Emilyrose

    Emilyrose New Member

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    It's the best I could get at the time tonight in the morning I'll open the bonnet and make another video tested the aircon doesn't go away with it on

    I haven't done the pulley check as I'm unsure on how to do it (please don't poke fun at me cause I'm a chick)

    It seems to not be as loud when driving it's more starting, stopping at lights
    Slowing down that type of thing
     
  4. Emilyrose

    Emilyrose New Member

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    It's the best I could get at the time tonight in the morning I'll open the bonnet and make another video tested the aircon doesn't go away with it on

    I haven't done the pulley check as I'm unsure on how to do it (please don't poke fun at me cause I'm a chick)

    It seems to not be as loud when driving it's more starting, stopping at lights
    Slowing down that type of thing
     
  5. vr304

    vr304 Well-Known Member

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    I’d start by removing the main drive belt and see if the idler pulleys turn nicely without any binding also the water pump just be sure to take a photo of the drive belt before you take it off so you know which way it goes back on... Just speaking from experience on that one lol
     
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  6. Emilyrose

    Emilyrose New Member

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    Better video done today
     
  7. Emilyrose

    Emilyrose New Member

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    Better video
    And I sure will
     
  8. losh1971

    losh1971 Well-Known Member

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    This x2. If no pulley's are noisy then rub some dry lube on the belt and see if that helps.
     
  9. Emilyrose

    Emilyrose New Member

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    Thanks I'll give that a go!!
     
  10. Utel67

    Utel67 Active Member

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    Spray the bearing in the pulley with WD-40, do one at a time if it makes less noise you found the bad pulley bearing.
     
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  11. krusing

    krusing Well-Known Member

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    I had a similar issue, a bit noisy under the bonnet, ended up purchasing a mechanics stethoscope, and found 2 bad pulleys, :eek:
    not bad considering they were the original pulleys from when we purchased it in 2005.
    So I decided to purchased a Full Pulley Kit, and Supercharger Service Kit from Mace Engineering, [do it once do it properly] ;)
    Also purchased 2 new Belts to complement the new pulleys. ;)
    Sounds nice and quiet in the car now. :)
    The pulleys are easy to change, but ALWAYS tension the pulley bolts up as per spec !, you would hate to lose a belt on a freeway or at BFN.
    Recently replaced the Alternator Bearings and Regulator, to be on the safe side, runs beautifully, apart from the Air Conditioning Compressor problem.

    On a side note
    The Supercharger service kit took a few hours, very easy to do, with the right equipment of course.
    [as I took my time, and didn't want to stuff it up].
    With a word of advice, don't event think about attempting servicing the Supercharger without the right tools, and a Bearing Press.
     
    Last edited: Aug 29, 2019
  12. immortality

    immortality Home of the smoky breakfast Bacon! Staff Member

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    As already mentioned, take the main belt off and test. Then check each pulley by hand (give it a spin and the wobble test). Having a 2nd look at the video I recon a few of those pulleys have already been replaced with the new aftermarket steel type. Also check the PS pump, water pump and alternator etc.

    Another problem that is often overlooked are the tensioners. These needs to move freely or the belt will slip. With the belts off use a spanner and make sure they move freely. If not, use some WD40 and spray liberally into the housing as you move it backward and forwards through it's full range of motion. If it is working properly it should have a fair bit of tension on it. I'm told that as these wear the tensioner mechanism will cock on a small angle which will put the tensioner pulley out of alignment and make the belt run off to one side and cause excess wear on one edge of the belt.
     
  13. Trevor loves holden.

    Trevor loves holden. Well-Known Member

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    Just in case its not the pulley wheels, it seemed to get louder towards the alternator maybe bushers or bearings in it , also called be water pump to, also A/C compressor bearing. But try the spray lube on the pulley wheels first.
     
  14. immortality

    immortality Home of the smoky breakfast Bacon! Staff Member

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    Easiest way to diagnose the AC pulley bearing is to simply turn on the AC which engages the pump at which point the bearing stops turning and the noise would go away.
     
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  15. Emilyrose

    Emilyrose New Member

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    The noise didn't go away
    Took all belts off and ran it for about 20 seconds
    No noise poof it was gone
    Pulled out idler pulley let's just say it's rooted
     
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  16. immortality

    immortality Home of the smoky breakfast Bacon! Staff Member

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    Yep, it's a fairly typical problem. Is a steel pulley or plastic? If it's steel you can just replace the bearing (6203 2RS I believe but please double check), if it's plastic then get yourself a Nuline replacement pulley that is steel so should it ever fail again you can simply do the bearing.
     
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  17. krusing

    krusing Well-Known Member

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    You are correct,
    the 6203 2RS Bearing is a common Pulley Bearing on VX & VY's,
    as I did a pulley change-over for someone recently,
    and they were the bearings in the steel replacement pulleys.
     
    Last edited: Sep 28, 2019
  18. Emilyrose

    Emilyrose New Member

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    Okay so I've done the idler pulley, power steering pump, water pump, new belt on supercharger side and the noise is still there :/ unsure of where to go from here
     
  19. Trevor loves holden.

    Trevor loves holden. Well-Known Member

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    Sounds like your Alternator.
     
  20. krusing

    krusing Well-Known Member

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    Which pulley is the one that's faulty ?
    If its one of the ribbed one's [plastic one], as they have 2 on there,
    replace it with a nuline steel one,
    so most of the bearings are replaceable, being most bearing are $5 > $7 going by memory.
    Most if the replacement bearings are part # 6203 2RS, [as mentioned earlier]
    apart from the SC Idler Pulley, I have this as part # 6303RS [as its a slightly bigger pulley in diameter].
    Not sure why, but it was the pulley supplied.

    The easiest way to see which one is faulty,
    Get hold of a LONG screw driver [flat blade type preferred], place the shaft of the screw driver on the front of the pulley retaining bolt,
    On the handle end, place it to your ear and listen to the noise of the bearing,
    In doing it this way, and if you have a LONG HAIR, make sure you tie it back for your own personnel safety.
    To check if the noise is coming from the alternator,
    Place the screw driver on the front of the housing just behind the pulley, and listen to the front bearing,
    As for the back of the alternator, just place the screw driver on the back of the housing where the bearing sits.
    The Bearings can be replaced for about $20, but you would be best to use a bearing press, or similar,
    Don't use a butchers knock stick [ake: Hammer] to knock the bearings off.

    Keeping in mind, All the Bearings are NOT serviceable,
    they need to be replaced.
    So don't try and re-lubricate them, because they will fail at the most inconvenient time.

    The other way to check where the noise is being produced by, is to purchase a mechanics stethoscope from Supercheap Auto or eBay,
    https://www.ebay.com.au/i/283617712...MI5ofKjtnx5AIVgx0rCh1CzgDiEAQYAyABEgKYv_D_BwE

    https://www.supercheapauto.com.au/p/toolpro-toolpro-stethoscope---mechanics/12550.html

    As thats how I determined to which noisy pulley that I had on my Super6, where I had a couple that were noisy, so I changed them all for the case of the exercise.
    And its running nice and quiet now. ;)
     
    Last edited: Sep 28, 2019
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