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Thread: More issues

  1. 14th December 2013, 07:45 PM #1
    Beerdead
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    More issues

    Suddenly the motor is very loud. An almost roaring whine.

    No idea why!!! It has not been touched.
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  2. 14th December 2013, 08:06 PM #2
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    ~Rich~
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    At a cold start?
    DISCO3.CO.UK - View topic - [Mechanical] [Solved] Roaring Noise from Cold
    DISCO3.CO.UK - View topic - Engine Noise From Cold
    Normal!
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  3. 15th December 2013, 07:55 AM #3
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    Redback
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    Our D4 does it also(same engine) although not as bad as the D3 or our old TD5

    Baz.
    Cheers Baz.

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  4. 16th December 2013, 05:28 PM #4
    Beerdead
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    Thanks for the replies gentlemen, but it does not diminish as the motor warms. It only occurs under positive throttle, or coasting downhill.
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  5. 16th December 2013, 05:58 PM #5
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    Redback
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    Quote Originally Posted by Beerdead View Post
    Thanks for the replies gentlemen, but it does not diminish as the motor warms. It only occurs under positive throttle, or coasting downhill.
    Have the viscous fan looked at!!

    Baz.
    Cheers Baz.

    2011 Discovery 4 SE 2.7L
    1990 Perentie FFR EX Aust Army
    1967 Series IIa 109 (Farm Truck)
    2007 BMW R1200GS
    1979 BMW R80/7
    1983 BMW R100TIC Ex ACT Police
    1994 Yamaha XT225 Serow
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  6. 17th December 2013, 09:14 PM #6
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    scarry
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    The fan is actually electric,not viscous..At first start when cold,under acceleration it will roar,then drop off and only come on when needed.

    Could be a fault with the ECU causing it to be on all the time.
    Last edited by scarry; 17th December 2013 at 09:21 PM. Reason: more info
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  7. 17th December 2013, 10:27 PM #7
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    discojools
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    Is it electric? I was sure it was viscous. I'll have a look in the morning.
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  8. 18th December 2013, 10:56 AM #8
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    Marmoset
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    The Manual describes it as follows in the cooling specification section:

    "Engine driven, viscous coupled with electronic control"
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  9. 18th December 2013, 03:13 PM #9
    Scary
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    Money would be on the Alternator on its way out.

    Lower voltage makes the fan run constantly. Easily misdiagnosed until the alternator gives up
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  10. 18th December 2013, 07:18 PM #10
    Beerdead
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    Took the bash plates off for a look. Found what appears to be a new leak from the intercooler connecting hoses. Don't know if this is significant or even relevant. Tightened up the clamps
    Couldn't see anything else, and couldn't locate the source of the roar, but it didn't seem as loud today.
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