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Thread: preparing a 03 TD5 Discovery for water crossings

  1. #1
    chook Guest

    preparing a 03 TD5 Discovery for water crossings

    Resently while out and about I had an issue with a water crossing which resulted in the engine cutting out (softer bottom and pot whole in area driven). I winched my D2 out popped the hood checked every thing and went nuts with the CRC. No signs of water around the ECU. D2 started again no dramas other than when the revs dropped off the engine cut out.

    The car was driven home (approx 80 kms) and then taken in for its 80,000 kms service. While there is asked the Mech to look into why the engine had cut out. All was good engine not cutting out any more (dont know why it was occuring, something must have dried out) and I'm a happy D2 driver again.

    With plans to drive around Australia in the next couple of years I am after advice and or expreince in regards to preping the D2 for water crossing if and when required.

  2. #2
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    Water in the ECU does that.

    I stop at the edge of the water now.... and then drive in and as long as you dont stop it should be ok. If you go in too fast the fan will hit the radiator and thats a pain.

    You may also want to check the seal on your airbox (Duckbill from under the guard) as it will probably leak despite the snorkel.
    Cheers
    Slunnie


    ~ Discovery II Td5 ~ Discovery 3dr V8 ~ Series IIa 6cyl ute ~ Series II V8 ute ~

  3. #3
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    Use a blind for deep crossings, and do as Slunnie said, slow in not too slow, then create a bow wave, i use 2nd low range.

    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

  4. #4
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    There aren't that many sensors that will stop the engine.

    Water inside the ecu will do this. There are a few drain holes in the base which it can fill up through. It does normally take a reasonable amount of water in it to actually stop the engine.

    smaller amounts can cause other issues. no throttle response etc.

    The crank position sensor has the ability to stop the engine dead, but is 100% waterproof.

    The throttle pedal also seems to be completley submersible without issue.

    Most of the other sensors, eg MAP and AFM, can be unplugged with the engine running and it will not stop.

    Bad signalls to the injectors could also cause it to stop. I think this is part of the reason it stops the throttle if it thinks there is an issue, as the engine will keep running.

    As has been said a sensible speed, and a tarp should be all you need. We saw a D2 TD5 up the cape just with a snorkle and mud tyres and he had driven through all the creeks without any prep work.

    Rgds
    Pete.

  5. #5
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    Hi,

    well I had a couple of little swims recently in my TD5. The only prep was a snorkel (day before i went lol) and ALL breathers go up into the snorkel now. 3 of the 4 are already high up in the engine bay, but the rear axle just sits up in the rear wheel arch, that now joins the others at the bulkhead and goes up the snorkel to.

    I don't know whether you guys would consider this a "deep" wade, but have a look anway...

    http://www.youtube.com/watch?v=VvRwLcnQk58

  6. #6
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    Quote Originally Posted by Urban Panzer View Post
    I don't know whether you guys would consider this a "deep" wade, but have a look anway...
    If its touching the bonnet then I consider it deep.

    This was a pic at Cape York near the start of the OTL. It was just before a hole put water up the windscreen. It was the deepest water I'd driven in.



    ok, just uploaded the vid, sorry for the delay at the start.

    The tide line is on the snorkel as I came out.

    http://au.youtube.com/watch?v=9Bu1Whh6oVo
    Cheers
    Slunnie


    ~ Discovery II Td5 ~ Discovery 3dr V8 ~ Series IIa 6cyl ute ~ Series II V8 ute ~

  7. #7
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    what about the ecu under the passengers seat if it is an auto ?




    you wouldnt want to go much deeper than this without a snorkle

    there was water in the airbox after this crossing but...luckily.... it kept going


    cheers

  8. #8
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    [QUOTE=Slunnie;791026]If its touching the bonnet then I consider it deep.
    It was just before a hole put water up the windscreen.

    lucky i missed that deep hole.....didnt realise it was same spot til after i posted

    i'd like to know if anyone has drowned that ecu under the pasengers seat


    cheers

  9. #9
    Zute Guest
    Warning, Check that your snorkle is water tight. where it comes though the side to the air box those joints may leak. I have placed a clip on the drain under the air box as well.

  10. #10
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    [QUOTE=scarry;791084]
    Quote Originally Posted by Slunnie View Post
    If its touching the bonnet then I consider it deep.
    It was just before a hole put water up the windscreen.

    lucky i missed that deep hole.....didnt realise it was same spot til after i posted

    i'd like to know if anyone has drowned that ecu under the pasengers seat


    cheers
    Nice Piccy

    What ECU under the passenger seat ?? On my TD5 all thats under there is the Factory Hi-fi amplifier.....

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