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Thread: Coolant Loss - Engine Overheating

  1. #1
    Join Date
    Jul 2017
    Location
    Melbourne
    Posts
    31

    Coolant Loss - Engine Overheating

    Hello All

    I've written up my recent saga regarding inlet manifolds here and no sooner were they replaced but the coolant crossover assembly under the throttle body split while towing a 2 tonne camper into Springsure, Central QLD today. Warnings were 'low coolant' and then 'engine overheating' (the latter briefly at least). With the use of some bailing wire and zip ties I managed to hold the assembly together enough to fill and hold some water and limp into town (albeit the water leaking quickly out again).

    Will now source a new assembly from MR Auto tomorrow and get it shipped, fitted and filled with coolant ASAP. I don't plan to start the car again unless I absolutely have to (the campsite we are on can only accomodate us for 2 nights!)

    Engine sounded OK with no further dash warnings other than 'low coolant' on the limp into town but after reading some horror stories on here I'm worried about any damage yet to be identified. Does anyone know what I should be checking for on pre or post repair? I've got an IID but haven't pulled any codes as yet.
    Discovery 4 2011 Fuiji White SDV6 HSE, RR Supercharged 9.5J 285/50/20 Nitto TGs, D4x4 winch mount, Runva 11XP, Traxide D45U, Safari snorkel, Big Reds, Rhino Rack, Outback LR tank, Rijidij carrier, UHF, Drifta drawers, Roof, Soft Leather

  2. #2
    Join Date
    Apr 2012
    Location
    Whyalla, South Australia
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    There wonít be anything to check.
    It will all depend on how much ďengine overheatingĒ took place, how hot it actually got etc.

    Donít drive it until you can fit the part. Itís an easy job.
    Cheers
    Tombie

    D4 MY11 - Stormy

    D90 MY15 - Ike
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    Tesla Cybertruck Tri-Motor AWD On order...due 2021
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  3. #3
    Join Date
    Mar 2018
    Location
    Perth
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    Quote Originally Posted by Tombie View Post
    Itís an easy job.
    Which is not something often heard in relation to a D3/4.

  4. #4
    Join Date
    Mar 2016
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    Perth
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    Quote Originally Posted by BradC View Post
    Which is not something often heard in relation to a D3/4.
    Often....ever.
    2010 TDV6 3.0L Discovery 4 HSE
    2007 Audi RS4 (B7)

  5. #5
    Join Date
    Feb 2007
    Location
    Kalamunda: Perth
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    3,408
    I carry one of these fittings as a spare as people have reported them failing before. But I'm wondering whether I should just fit as a precaution now based on time / ks travelled.

    What are people's thoughts - when's it time to change it out as preventative maintenance?
    2011 D4 3.0 SDV6
    1999 D2 V8, in heaven
    1984 RRC, in hell

  6. #6
    Join Date
    Mar 2016
    Location
    Perth
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    2,320
    Quote Originally Posted by Ferret View Post
    I carry one of these fittings as a spare as people have reported them failing before. But I'm wondering whether I should just fit as a precaution now based on time / ks travelled.

    What are people's thoughts - when's it time to change it out as preventative maintenance?
    Just fit it. If you change it every timing belt then youíll be all ok.
    2010 TDV6 3.0L Discovery 4 HSE
    2007 Audi RS4 (B7)

  7. #7
    Join Date
    Oct 2012
    Location
    Perth
    Posts
    1,245

    Coolant Loss - Engine Overheating

    Quote Originally Posted by DiscoJeffster View Post
    Just fit it. If you change it every timing belt then youíll be all ok.
    Agree, 7 years or less. There is also a plastic fitting where the hose connects to the engine block. Iíve also got this for next belt time but itís a single piece whereas the top unit is joined / glued and splits there. The block fitting a real bugger to access.

    For my second timing belt change (half life of car) Iím thinking to go the whole hog on new radiator, condenser, thermostat, water pump, top and bottom hose, oil cooler and these plastic fittings since you are pulling things apart once and once only.

  8. #8
    Join Date
    Feb 2014
    Location
    Adelaide
    Posts
    105
    i had the exact thing happen to mine the only code that came up was coolant overheated. i has able to put it on a flat bed and take it my my local indy, they did a pressure test on the system, i guess to make sure no other damage to the cooling system, but all good refilled replaced the damaged part and no issues for the last 25000 km.
    2010 D4 3litre twin turbo brand new motor 5km old on a 100,000km car. Kaymar rear bar, ARB front bar, Hannibal roof rack, Hella Predator Spot lights, long rand fuel tank, Traxide battery management. touring weapon.

  9. #9
    Join Date
    Jul 2017
    Location
    Melbourne
    Posts
    31
    Yep, seems like a common issue but of course I didnít know that until it happened and read the numerous posts. Preventative seems to be the way to go if youíre on a long trip, especially towing.

    MR Auto are sending one today and hopefully fitted and fixed in a day or two.

    Praying thereís no further issues or over-cooked motor.
    Discovery 4 2011 Fuiji White SDV6 HSE, RR Supercharged 9.5J 285/50/20 Nitto TGs, D4x4 winch mount, Runva 11XP, Traxide D45U, Safari snorkel, Big Reds, Rhino Rack, Outback LR tank, Rijidij carrier, UHF, Drifta drawers, Roof, Soft Leather

  10. #10
    Join Date
    Oct 2012
    Location
    Perth
    Posts
    1,245

    Coolant Loss - Engine Overheating

    Quote Originally Posted by Sol View Post
    Yep, seems like a common issue but of course I didnít know that until it happened and read the numerous posts. Preventative seems to be the way to go if youíre on a long trip, especially towing.

    MR Auto are sending one today and hopefully fitted and fixed in a day or two.

    Praying thereís no further issues or over-cooked motor.
    Fortunately it seems to emerge as a small split, slow leak therefore slow manageable loss of coolant before letting go big time. Ignore any coolant loss at your peril

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