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Thread: Almost cooked my td5...

  1. 28th February 2015, 09:31 PM #1
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    Almost cooked my td5...

    Seems that when I was fitting the sensors for my MadMan EMS I have inadvertently left the cap on the header tank loose.

    Whilst driving to newcastle on friday arvo, I was alerted to "water dripping from the bottom of my car" by the car beside me at the traffic lights.

    Thinking it was probly the AC drains dripping, I headed off and travelled around 1K up the road, when I could see a trail of something on the road behind me, pulled up, popped the bonnet, coolant everywhere...

    Ended up putting half a bucket of water in it, so im guessing between 4 and 5 litres, and continued on my journey to the hospital (things always happen at the most inconvenient time hey...)

    Checked the coolant when I arrived at the hospital, and it was down to the "full" mark on the header tank.
    Checked it again before I headed home, and checked it the next morning, still in the same place.
    Ran the car for around half an hour today, trying to get it upto temp, but sitting in the driveway, I couldnt get it past 70 odd degrees.

    I am a bit hesitant to drive it now, but eventually I am going to have to bite the bullet and drive it... REALLY hoping I havnt turned it to poo.

    Any thoughts on the matter???

    Quite possibly irrelevant, but motor has 130,000 kays on it.
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  2. 28th February 2015, 09:49 PM #2
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    scarry
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    Firstly the TD5 coolant system has to be bled correctly or the head will more than likely be damaged.
    I don't know the correct procedure,but a search on here will probably find it,or someone may chime in and explain how to do it correctly.
    Dave blknight has an old thread about how to do it.

    You must use the correct coolant as well.

    If you haven't damaged anything you have been lucky,you need to fit an 'engine saver'.The sensor goes in the top radiator hose and alarms if the water level drops.Lots of info on this site about these.

    The engine saver is made specifically for the TD5
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  3. 28th February 2015, 10:02 PM #3
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    You just unclip the plastic tank and lift it higher than the bleed screw. Just jam a block of wood under it.

    Remove the bleed screw from the top hose and fill until coolant comes out. Refit bleed screw. Continue filling until tank is at correct level.

    Refit tank.

    Drive car and recheck. I have found that it needs a couple of minor top ups over the next couple of drives.
    Dave.

    I was asked " Is it ignorance or apathy?" I replied "I don't know and I don't care."


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  4. 28th February 2015, 10:24 PM #4
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    Quote Originally Posted by scarry View Post
    ,you need to fit an 'engine saver'.The sensor goes in the top radiator hose and alarms if the water level drops.Lots of info on this site about these.

    The engine saver is made specifically for the TD5
    I was in the process of fitting my MadMan EMS, which, ironically, has a low water alarm...

    I am aware of the bleed process, and the need for specific coolant, what I am wondering, is there any way to tell if long term damage has been done...
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  5. 28th February 2015, 10:29 PM #5
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    If it was me I would just go or a drive and stop and check coolant after 2 km then 5 km. If all was good I would then do about 10 km.

    If your coolant stays steady and you are not overheating it should be ok.
    Dave.

    I was asked " Is it ignorance or apathy?" I replied "I don't know and I don't care."


    1983 RR gone (wish I kept it)
    1996 TDI ES.
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  6. 28th February 2015, 10:41 PM #6
    discorevy
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    Quote Originally Posted by Phat-Customs View Post
    I was in the process of fitting my MadMan EMS, which, ironically, has a low water alarm...

    I am aware of the bleed process, and the need for specific coolant, what I am wondering, is there any way to tell if long term damage has been done...
    Just check that cooling system isn't pressurising from cold ie : after a couple of minutes drive , also , if coolant is still around 70? after 10 minutes it may be that your thermostat has partially stuck open after the overheat. Steel dowels or plastic?.
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  7. 28th February 2015, 10:46 PM #7
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    Eu3 engine so I'm assuming steel.
    Only running it in the driveway with no load, I think 75 was the highest I got, but bottom rad hose was still cool, so assuming thermostat hasn't opened yet.

    Monitored the temp all the way home after the incident (with Nanocom) and saw a max of around 87 for memory.

    Will do some further investigating tomorrow.
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  8. 28th February 2015, 11:00 PM #8
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    Did you have the temp gauge fitted to the Madman EMS - this does record and retain max values (assuming still had contact with water). Plus I think the ECM would log a high temp alarm fault code as well if the original temp gauge was still seeing a real temperature.
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  9. 1st March 2015, 02:14 PM #9
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    No, I had only fitted the sensors to the engine at this stage, temp, level and pressure. No wiring connected to them. Doing that today!

    Checked logged codes, nothing, I've also read that the ac fans cut in and stay on constantly at temps over 110. But, no water means no temp...
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  10. 1st March 2015, 07:19 PM #10
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    I was also under the opinion that if overheating damage had been done the computer makes the thermo fans run constantly.
    ......I may be wrong..............................
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