rzuluaga
Member Since: 05 Mar 2006
Location: USA
Posts: 18
 
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| Where is my Coolant? No leaking |
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Hi guys,
my 05 LR3 (78k) displayed check engine light. Checked fault code and it was P0128 (meaning from computer - coolant temp is always low). I checked the coolant level when engine was cold and it is almost empty. Checked for leaks and there is no leaks in any place. Checked thermostat housing and no leaks too.
1- I am hearing some water bubbling in passager side.. is this related to any coolant issues?
2- Why the coolant level low messages was not displayed? Maybe the coolant sensor went bad?
3- Where is the coolant if there is no leaks? Naive question. If the thermostat is bad or opened (not sure if this is possible) can be the coolant in the pipes and not returning to the reservoir?
4- Should I put more coolant to see if the check engine light turns off?
I found a very good DIY (http://www.scribd.com/doc/45477748/Land-Rover-LR3-%E2%80%93-Thermostat-Replacement-DIY) .. should I check thermostat and see how it looks?
Thanks in advance, Roberto
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 14th Feb 2012 10:34 pm |
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ronp
Member Since: 29 Nov 2006
Location: North Yorkshire
Posts: 15267
  
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it'll probably be your at your oil cooler.
coolant will be leaking there and evaporating with the heat
I had the exact same symptoms with my old d3 a few years back. ...... always on the road less travelled 🚧
< ‘tis but a mere scratch …….. it’ll polish out.
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| 14th Feb 2012 11:07 pm |
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Alex08
Member Since: 09 Nov 2006
Location: Glasgow
Posts: 1600
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Autobox? 
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| 15th Feb 2012 8:37 am |
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tlt
Member Since: 01 Sep 2006
Location: Austin, TX
Posts: 262
 
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It has to be, unfortunately that is all they sell in the US Autobox Petrol.
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| 20th Feb 2012 12:25 am |
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NJSS
Member Since: 06 May 2009
Location: Catherington, Hampshire.
Posts: 10839
 
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Auto - it's probably contaminating the autobox oil !
Some threads here worth reading.
NJSS Am I Gammon or Woke ? - I neither know nor care.
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2011 Mercedes Benz SL350 (R230)
1973 MG B GT V8 - 3.9L John Eales engine, 5 speed R380 gearbox, since 1975.
1959 MGA roadster - 1.9L Peter Burgess Engine - 5 speed gearbox
Past LRs - Multiple FFRs, Discos & a Series I - some petrol, some diesel,
none Electric or H2 fuel cell - yet.
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| 20th Feb 2012 9:11 am |
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Alex08
Member Since: 09 Nov 2006
Location: Glasgow
Posts: 1600
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That was what I meant ....... Coolant has escaped into the auto box....
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| 20th Feb 2012 12:32 pm |
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ruggedpeak
Member Since: 10 Jun 2010
Location: UK
Posts: 1625
 
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go to an auto gearbox repair shop and ask them to test the ATF for coolant. If contaminated then the shared cooler has split and leaked. As above plenty of threads on here. Tony
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| 20th Feb 2012 1:34 pm |
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rzuluaga
Member Since: 05 Mar 2006
Location: USA
Posts: 18
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Hi Guys,
thanks a lot for all your feedback and suggestions. I finally found the leak in one of the hoses in the thermostat housing and as already mentioned by others the leak was being evaporated by the heat of the engine so I wasnt sure .. I replaced clamp and also checked the thermostat and found the gasket complete broken.. see attached picture.
As soon as I replaced thermostat and added coolant the check engine light went off and so far no leaks .. I have been checking it a couple of times per day.
https://plus.google.com/u/0/photos/1015357...9571924354
Thanks again![/img]
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| 21st Feb 2012 2:59 pm |
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