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Thread: Td5 water pump noise

  1. 27th February 2019, 12:36 PM #1
    hilly1989 Guest

    Td5 water pump noise

    Answer: It's the new centrigual filter spinning down.


    Had a coolant leak from the water pump on my 02 TD5 D2.

    Video here.
    YouTube

    Put a new pump, orings and housing in as housing nipple was corroded and figured it was worth changing the pump while in there.

    There is now a sound I hear for 10 seconds after I turn the engine off.
    Sounds like either a shot bearing or the impellar is rubbing on the housing.

    Is it normally for the pump to run down after turning the engine off like this?

    Temps are good, mid way on the gauge, coolant flowing back into the resivour and I get a good fountain if I remove the bleed screw and run the engine, heater works, so all checks out apart from the noise.

    Any ideas to prep before I pull it out and have a look. Wasn't a pleasent job to start with.

    All aftermarket parts.

    Thanks in advance.
    Last edited by hilly1989; 27th February 2019 at 06:17 PM. Reason: Found cause
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  2. 27th February 2019, 01:23 PM #2
    Bazzle218's Avatar
    Bazzle218
    Bazzle218 is offline Master Subscriber
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    Pump is driven from tab of the back of the power steering pump which in turn is driven by the belt. They cant run on. I believe you are hearing the centrifugal filter winding down. Which most do. Check that the lid is re seated properly on the filter, had experience of the same thing.
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  3. 27th February 2019, 01:28 PM #3
    hilly1989 Guest
    That makes a lot of sense and will be much easier to fix. Will have a look tonight. Cheers
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  4. 27th February 2019, 02:04 PM #4
    PhilipA
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    That makes a lot of sense and will be much easier to fix. Will have a look tonight. Cheers
    It's not something to fix. It is normal.

    Regards Philip A
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  5. 27th February 2019, 03:02 PM #5
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    Bazzle218
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    As Phillip A stated, they all make a sound to a certain extent..
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  6. 27th February 2019, 04:55 PM #6
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    Lemo
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    That’s pretty noisy for the centrifugal filter isn’t?
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  7. 27th February 2019, 06:15 PM #7
    hilly1989 Guest
    Can confirm it is the centrifugal filter. I put a new filter in when I did the pump so that has also changed. Can't recall ever hearing it that loud before.

    Atleast I know the filter is spinning.
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  8. 27th February 2019, 08:30 PM #8
    discorevy
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    I've heard cheap aftermarket filters make that noise ( unbalanced ) , but I've also come across the steel bush in the top of the housing missing which sound pretty bad as well
    Use Mann or mahle filters, ryco can be OK too
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  9. 28th February 2019, 06:00 AM #9
    hilly1989 Guest
    FIlter was a bearmach brand.

    I'll have a closer look at the housing tonight.

    By hand the filter felt smooth and span nice without the housing there, but obviously a different story at the higher rpm.
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  10. 28th February 2019, 12:16 PM #10
    hilly1989 Guest
    All looks normal to me.
    I can see the metal Bush in the housing so that's still there.

    I'll replace the filter in the near future and see how it goes.
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