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Thread: A Strange Noise

  1. 9th November 2009, 01:52 PM #1
    DaveF Guest

    A Strange Noise

    Greetings,

    I hope someone might have an answer to this mystery noise.
    My 01 D2 TD5 manual is making a strange squeaking/squealing noise once up to operating temp. The noise is there whether in gear or neutral and only stops when the brakes are applied.
    It is not like sqealing brakes under braking more like the sound similar to the chirping you get when your uni joints are on the way out but with no associated vibration. All uni joints have been replaced with greasable ones.
    The brake guards were removed as they were cracked over a year ago and the front drivers hub has recently been replaced and the noise does not change with speed variation.
    Any ideas would be greatly appreciated.
    Cheers
    DaveF
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  2. 9th November 2009, 02:35 PM #2
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    gazk
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    I presume the noise is only when moving. Brake Pads ? - if new are they fitted with the chamfer (if present) on leading edge?
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  3. 9th November 2009, 02:53 PM #3
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    I'm thinking brake pads as well, maybe something is caught in one of them?

    Does the noise come from any particular area?
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  4. 9th November 2009, 04:42 PM #4
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    ide be thinking more along the lines of broken exhaust manifold studs.

    cheers phil
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  5. 9th November 2009, 05:01 PM #5
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    Quote Originally Posted by discowhite View Post
    ide be thinking more along the lines of broken exhaust manifold studs.

    cheers phil
    But this noise stops when the brakes are applied?

    Doesn't the exhaust manifold make a more tick tick noise?
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  6. 9th November 2009, 06:59 PM #6
    strangy
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    My 01 D2 TD5 manual is making a strange squeaking/squealing noise once up to operating temp. The noise is there whether in gear or neutral and only stops when the brakes are applied.
    So what you are saying is:

    The noise is happening regardless of vehicle motion, but ceases when brakes applied?

    If this is the case I would be looking at the vacuum lines from booster and alternator.
    Otherwise I'm with the others on brakes.
    Cheers
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  7. 9th November 2009, 07:22 PM #7
    ecka
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    had a noise on a mates 99 td5 last weekend turned out to be the unit that operates the egr valve,similar to what you describe. We blocked off the vacuum line at the tee on the vacuum line that goes to the brake booster problem solved. This also disabled the egr valve.
    hope this helps
    cheers Ecka.
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  8. 9th November 2009, 08:39 PM #8
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    Quote Originally Posted by nice1guv View Post
    But this noise stops when the brakes are applied? cos your not accelerating anymore..try braking with your foot on the accelerator.

    Doesn't the exhaust manifold make a more tick tick noise? not on a TD5 most ppl describe it like you have, words like chirping, squeeling etc.
    cheers phil
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  9. 10th November 2009, 06:54 AM #9
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    Quote Originally Posted by discowhite View Post
    cheers phil
    I lean towards what Phil is saying sounds very much like it
    cheers kelvin
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  10. 10th November 2009, 07:08 AM #10
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    Phil, it is easy to brake while you still have your foot on the go pedal, provided that you have two feet!!

    Having said that, I tend to agree with your diagnosis. In my experience the noise will be loudest under hard acceleration if it is an exhaust stud.
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