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Thread: time to replace the viscous / fan ??

  1. #1
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    time to replace the viscous / fan ??

    Hi guys,

    my trusty 200 tdi Disco gets a little warm (only when towing the boat).

    seems to take a while to cool.

    yesterday the alt / batt red light would occasionally flash on when towing my boat home ..the temp was half way between half and three quaters.

    seems time to replace the fan with a falcon one

    is that the consensus ??

    Regards Nat

  2. #2
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    that or its time to service the cooling system and get the radiator rodded out.

    Id do both.
    Dave

    "In a Landrover the other vehicle is your crumple zone."

    For spelling call Rogets, for mechanicing call me.

    Fozzy, 2.25D SIII Ex DCA Ute
    Tdi autoManual d1 (gave it to the Mupion)
    Archaeoptersix 1990 6x6 dual cab(This things staying)


    If you've benefited from one or more of my posts please remember, your taxes paid for my skill sets, I'm just trying to make sure you get your monies worth.
    If you think you're in front on the deal, pay it forwards.

  3. #3
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    In standard form, it should do the job. So. I'd be pulling out the radiator, flushing etc before any upgrading.

    The front thermos cut in with the air conditioning. Might be worth checking they're coming on.

    Regards
    Max P

  4. #4
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    hi. it seems to me, and I don't pretend to be an expert, but I think there is probably another underlying problem with your vehicle. The fact that the alternator light is coming on combined with the engine running hotter would suggest that maybe the fan belt is slipping. there are other issues to explore, eg timing, cooling system, head. Your car should be able to cope with towing a boat without overheating. Good luck!

  5. #5
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    having the radiator serviced (incl rodding) usually works wonders - they pressure test them when they reassemble them too - all costs less than $100 if you remove it from the vehicle and take it to the radiator place

    on reassembly , check the oil cooler connections - they seem to be the most difficult to get right

    it's a good opportunity to clean the intercooler out as well

  6. #6
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    Cheers fellas, Looks like a rod out is in order...

    will also have a close look at the thermo fan set up as they have never come on...

    Thanks fellas

    Nat

    PS Blacknighgt, keep in touch, pop in for a cuppa on your way past mate

  7. #7
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    On a related issue when the viscous hub fails does the fan slip or seize up?? If it slips I can understand overheating but if it seizes I assume it just works as a fixed fan, noisy and no overheating.

    The Viscous on my 101 has seized and I want to replace it but it is unique to the 101 (not the same as other 3.5 V8s) so I am not sure yet what alternatives may work.


    Garry
    REMLR 243

    2007 Range Rover Sport TDV6
    1977 FC 101
    1976 Jaguar XJ12C
    1973 Haflinger AP700
    1971 Jaguar V12 E-Type Series 3 Roadster
    1957 Series 1 88"
    1957 Series 1 88" Station Wagon

  8. #8
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    Quote Originally Posted by garrycol View Post
    On a related issue when the viscous hub fails does the fan slip or seize up?? If it slips I can understand overheating but if it seizes I assume it just works as a fixed fan, noisy and no overheating.

    The Viscous on my 101 has seized and I want to replace it but it is unique to the 101 (not the same as other 3.5 V8s) so I am not sure yet what alternatives may work.


    Garry
    It can do both. If its seized then yes it will spin non stop but it can also get a lot of free play and not spin fast enough.

  9. #9
    Join Date
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    A simple way to check fan clutch.When motor is at normal temp carefully try to stop fan with a paint brush.You may need to remove top fan shroud to access fan.This has been posted on this site many times,a search would help.
    If fan can be stopped its stuffed.
    Did one on wed cost $180 odd to replace.
    ps also did bottom hose(disco1 v8i) what apig of a job
    pps undo fan hub same direction of fan operation.
    some are l/h and some r/h thread

  10. #10
    Join Date
    Jan 2007
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    Not sure if this is typical - but the viscous fan should cause an audible roar to be emitted from under the hood when it cuts in, well at least that's what mine used to do until it crapped itself, and now does again following fittment of a second new one - yes second because the first new one died in 2 weeks!!

    Also as said, get the rad rodded, and check the pump bearings 'cause it sounds like they may be siezing causing the belt to slip, and the themostat too

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