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Thread: Td5 lack of coolant pressure

  1. 8th February 2016, 07:30 PM #1
    Charles
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    Td5 lack of coolant pressure

    Hi all,
    After numerous repairs, including head gasket, new radiator etc etc I have a weird issue with the Td5. Bled cooling system very carefully according to RAVE and advice read on the forum. Ran the car today and top radiator hose stayed "soft" even when car had been driven and brought up to operating temperature. This seemed odd, so I carefully released the coolant tank cap with the system hot and engine running and there was zero pressure...When I cracked the bleed screw in top hose, coolant squirted out with no sign of air. Coolant hoses all in correct order according to RAVE but the fuel filter was too hot to touch, making me wonder whether the fuel cooler is somehow the problem?

    Car has the "new" style radiator but I don't have the restrictor in the fuel cooler as not available.

    Cheers, Charles

    Any suggestions welcome as this car is starting to do my head in
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  2. 8th February 2016, 07:58 PM #2
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    stevo
    stevo is offline Wizard Supporter
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    Checked the cap it may not be holding pressure.
    disco seriesII mods so far:-bullbar,hyd winch,
    detriot locker,lsd front,C.D.L kit,chipped and bigger intercooler,2" lift,rock sliders, lsd in transfer case, modified auto trans.

    In the event of nuclear war,Disregard this message
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  3. 8th February 2016, 08:13 PM #3
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    sierrafery
    sierrafery is offline YarnMaster Silver Subscriber
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    As long as there's no collant loss and no overheating it seems quite normal to me, the top hose must not be harder than a matured banana and it's possible to not hear any hiss with engine running at that 1.4 bar pressure...though you can put a new tank cap just to be ruled out, the fuel filter can get up to 70*C(or eeven more) after a long run so not a joy to put your hand on it
    Discovery Td5 (2000), manual, tuned
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  4. 8th February 2016, 08:31 PM #4
    Charles
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    Thanks for that. I am pretty used to vehicles that blow the cap off if you crack when warm, so good to know all may be well.
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