That does not sound good...
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  1. #1
    Tadpole s_ikari2015's Avatar
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    Default That does not sound good...

    So driving home from work today and the car developed a metallic ringing sound. It did it for a very short time then stopped until I pulled into my driveway. I then popped the bonnet and began worrying about the sound.

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    Attached video of the offending noise.

    To me it sounds like it's on the drivers side of the engine, something to do with the ancillaries or timing belt, not really internal. It's not blowing any smoke and is idling well and responding to accelerator well.

    My guess would be a failed timing belt tensioner pulley, what are other's thoughts?


    https://youtu.be/zFXU56MY0CY
    1992 Peugeot 205 Auto (SI)
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  2. #2
    sans witticism SLC206's Avatar
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    Not sure, but I'd not be driving it.

    Perhaps the harmonic balancer has let go.
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  3. #3
    Fellow Frogger! EvilElmo's Avatar
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    Maybe a escaped flywheel bolt? I'd also check the exhaust, may just be a broken clamp rattling.
    I'll go stare at mine for a while...

  4. #4
    Tadpole s_ikari2015's Avatar
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    Isn't it only a pulley on the 1992 1.6?
    1992 Peugeot 205 Auto (SI)
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    1000+ Posts cam85's Avatar
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    Sounds like you shouldnt be driving it.

    Loose bolt in the timing case rattling around waiting to be eaten up?

    Any loose nuts/bolts on the alternator?
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    Tadpole s_ikari2015's Avatar
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    I'll remove the upper timing belt cover and inspect over the weekend.
    1992 Peugeot 205 Auto (SI)
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    Tadpole s_ikari2015's Avatar
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    Quote Originally Posted by EvilElmo View Post
    Maybe a escaped flywheel bolt? I'd also check the exhaust, may just be a broken clamp rattling.
    I'll go stare at mine for a while...
    It's not on the flywheel/transmission side, definitely on the timing belt side.
    1992 Peugeot 205 Auto (SI)
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  8. #8
    UNM
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    Hard to diagnose as you don't want to cause further damage.

    Removing the serpentine belt (alternator belt) and listening to hear if the noise stops is one way to eliminate a few items. You can remove the belt and then try turning each and every pulley by hand - a noise that bad would be felt quite easily I should imagine.


    Good luck, it doesn't sound nice. At least the engine still runs, which is encouraging.

  9. #9
    Fellow Frogger! EvilElmo's Avatar
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    Quote Originally Posted by s_ikari2015 View Post
    I'll remove the upper timing belt cover and inspect over the weekend.
    Just pop out and do it now, you've got heaps of time!

  10. #10
    1000+ Posts djvu205's Avatar
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    Best case it could be the plastic timing belt covers they are always getting chewed up. As mentioned remove ancillaries belt to check. hopefully its not a loose bolt in cover! maybe a shot bearing on tensioner? try carefully moving plastic cam pulley cover back and forth I had one rub once that made a dreadful noise.

  11. #11
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    sounds like a jackhammer, maybe Hammas is digging a tunnel under your cabin
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    Sounds like $1 coins being fed into a pokie machine, with the same possible long term effect on your wallet if you don't stop now.
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    Fellow Frogger! EvilElmo's Avatar
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    Do any bolts/nuts have enough space to actually fall out completely?
    I was thinking the cover may stop anything coming out all the way. I've listened to it for about twenty minutes and to me it sounds like maybe a bolt has loosened up and is pressing on the inside of the cover.
    Would probably need to be a bolt/nut with a washer to account for the tinkling noise, the clacking noise sounds like something hitting plastic or maybe aluminium...

  14. #14
    Fellow Frogger!
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    Have you tried to narrow it down using a long bit of metal with one end at your ear and the other on various parts of the engine? Beware of moving parts like belts etc.!
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    Fellow Frogger! EvilElmo's Avatar
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    It's not something silly like a busted/loose engine mount is it?

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    Tadpole s_ikari2015's Avatar
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    I haven't had a chance to investigate further, but it definitely sounds bearing like, and so I am pretty certain it will be the tensioner. I will let you all know when I've had time to take the timing cover and belt off to check it out.
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    Fellow Frogger! EvilElmo's Avatar
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    a/c tensioner pulley?

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    Fellow Frogger! Trading Estate's Avatar
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    I had a friend with an old TR2 that sounded like that. Had dropped a valve seat!
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    Fellow Frogger! EvilElmo's Avatar
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    I'm gonna bet one dollar it's the a/c tensioner. And as a bonus all you gotta do to check it is bend over!

  20. #20
    Tadpole s_ikari2015's Avatar
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    Right, so I'm 99.99% sure it's the timing belt eccentric roller tensioner. I've taken the timing belt upper cover off and had a good look with the engine running.

    Basically it appears one of the ring bearings inside the tensioner has just come out completely and just rotating however it likes. Sometimes it catches the rest of the tensioner and spins really fast making that dinging/ringing sound, other times it sits clear and just slower rotates. I've captured a video in which you can see what I'm talking about and I'll post it once it has finished uploading.

    So, now time to change the timing belt and tensioner. Just have to wait for one to be delivered.
    1992 Peugeot 205 Auto (SI)
    1983 Subaru Sherpa
    2002 Holden CV8 Monaro

  21. #21
    1000+ Posts Peter Chisholm's Avatar
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    Sounds as though you've experienced a near miss. Lucky that the belt didn't slip and notch or two.

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    1000+ Posts djvu205's Avatar
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    Could be a good opportunity to do the belt and waterpump too?

  23. #23
    Tadpole s_ikari2015's Avatar
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    I've ordered a replacement belt and tensioner.

    Here's the video as promised.
    https://youtu.be/hBMxJEgzTkg
    1992 Peugeot 205 Auto (SI)
    1983 Subaru Sherpa
    2002 Holden CV8 Monaro

  24. #24
    1000+ Posts Peter Chisholm's Avatar
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    No wonder it is noisy. Doesn't look as though it's doing a very good job of tensioning either. Personally, I wouldn't run the engine until it's all fixed.

  25. #25
    Tadpole s_ikari2015's Avatar
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    Yeah the car is staying in the garage until I have the replacement. I might take everything off to get to the tensioner tomorrow so it's ready to put the new stuff straight on when I get it. For once the Haynes manual instructions sound exactly right for the car as I look at it from underneath... "remove inner wheel guard, remove accessory belts, remove lower cover, make note of alignment marks, remove tensioner and belt. Reverse order to fit"
    1992 Peugeot 205 Auto (SI)
    1983 Subaru Sherpa
    2002 Holden CV8 Monaro

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