 | Home > Puma (Tdci) > Coolant temperature issue and limp mode (revisited) |
 
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| Eduardo Member Since: 28 Aug 2008 Location: Región Metropolitana Posts: 2110   
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Well,
Winter ends and the summer is comming and with that the infamous temperature issue... 
After change all the inexpensive things (the thermostat, put the Nakatenga's fan extension, etc) without solve the problem completely, I decide to buy a new uprated radiator from Allisport to solve the temperature problem definitely (I hope). So the order is on the way (Christmass present for the Defender) ad should be installed during the 1st week of January to be tested during our summer (Jan-Feb). If this doesnt solve the problem I will run absolutely out of ideas. I will keep you informed Cheers to all Eduardo MY 2007 110 SW PUMA 2.4: Big Fog of 64' MY 1994 Jayco 1207 Folding camper: "El Tremendo"  Click image to enlarge |
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3rd Dec 2018 9:04pm |
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| MK Member Since: 28 Aug 2008 Location: Santiago Posts: 2477 
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Nor sure about Defender's water pump efficiency but today I was looking at my Hilux 2.5 and I could tell the rad is probably 20% bigger. Hilux engine is std no remap and around same power and torque figures. Though the intercooler is not in front of the rad.
Have you thought on adding an aux fan? You can probably fit a sender at your spec. Puma 110" SW ............................................................. Earth first. Other planets later |
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3rd Dec 2018 10:56pm |
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| Eduardo Member Since: 28 Aug 2008 Location: Región Metropolitana Posts: 2110
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Ethylene-Glycol based coolant, local made compatible with TL 774F 50% dilution. According to the manual should be Texaco XLC (also ethylene glycol) which is also compatible with the TL 774F in 50% dilution Cheers Eduardo MY 2007 110 SW PUMA 2.4: Big Fog of 64' MY 1994 Jayco 1207 Folding camper: "El Tremendo" Click image to enlarge Last edited by Eduardo on 3rd Dec 2018 11:47pm. Edited 1 time in total |
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3rd Dec 2018 11:41pm |
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| Eduardo Member Since: 28 Aug 2008 Location: Región Metropolitana Posts: 2110
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Humm, if the new radiator fails, probably that should be the way... Thanks Eduardo MY 2007 110 SW PUMA 2.4: Big Fog of 64' MY 1994 Jayco 1207 Folding camper: "El Tremendo" Click image to enlarge |
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3rd Dec 2018 11:42pm |
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| PAT303 Member Since: 25 Feb 2013 Location: Australia Posts: 125  
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Stupid question, have you changed the viscous hub?. No offense but you guys have no idea about hot weather, both our Defenders have worked in 50 degree Celsius heat for weeks on end, but the fan MUST work.
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5th Dec 2018 11:26am |
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| Eduardo Member Since: 28 Aug 2008 Location: Región Metropolitana Posts: 2110
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PAT303
Viscous was replaced around 2-3 years ago. BTW the problems occurs only with heavy load (as a family of 6 with all the gears), at high temperatures (over 30°C), high speed (120 kph) in mild but long slopes (that are common here in Chile and probably not in Australia). Otherwise temperature is not an issue. Cheers! Eduardo MY 2007 110 SW PUMA 2.4: Big Fog of 64' MY 1994 Jayco 1207 Folding camper: "El Tremendo" Click image to enlarge |
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5th Dec 2018 4:26pm |
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| Big Harold Member Since: 09 Jul 2018 Location: nsw Posts: 71 
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Do you have a cat fitted, that would be the first thing to remove.
I have had the same problem as you and have put it down to exhaust temp under load. Fit a pyrometer and keep an eye on it. I can drive mine and make it boil or watch the temp on the real time analogue gauge I have fitted and back off when temps rise. Mark |
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5th Dec 2018 9:32pm |
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| PAT303 Member Since: 25 Feb 2013 Location: Australia Posts: 125
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Eduardo, my advise, cut some gills in the front guards like the Range Rover, what you want is more airflow through the rad, owners have done it here and it makes a huge difference. https://www.google.com.au/url?sa=i&sou...2908023534 |
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6th Dec 2018 1:38am |
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| PAT303 Member Since: 25 Feb 2013 Location: Australia Posts: 125
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Look at the side vents in that link.
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6th Dec 2018 1:39am |
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| Naks Member Since: 27 Jan 2009 Location: Stellenbosch, ZA Posts: 2672  
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Are you using 6th gear or gearing down to 5th? -- 2010 Defender Puma 90 + BAS remap + Alive IC + Slickshift + Ashcroft ATB rear 2015 Range Rover Sport V8 Supercharged
Defender Puma Workshop Manual: https://bit.ly/2zZ1en9 Discovery 4 Workshop Manual: https://bit.ly/2zXrtKO Range Rover/Sport L320/L322/L494 Workshop Manual: https://bit.ly/2zc58JQ |
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6th Dec 2018 7:37am |
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| hornet Member Since: 04 Jan 2010 Location: Western Europe Posts: 373 |
Do you have (even slight!) loss of coolant? Do you observe the OBD temperature of the cylinder head? |
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6th Dec 2018 1:22pm |
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| Grenadier Member Since: 23 Jul 2014 Location: The foot of Mont Blanc... Posts: 5893  
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Eduardo, I had exactly the same problem as you. Hills, high air temp, revs. But the clue was hills (and suggestions from the forum members) that my coolant was low. Is yours at the right level? No blockages or air bubbles? It sounds so similar. I topped mine up and now keep a regular eye on the level, and never had the problem occur again. Also gave the MAF a clean at the same time, but coolant was the key, it was low. Add the hills and it just seemed to accentuate the 'level' whereas flat roads seemed to be ok. It was obviously on the threshold for the ECU to turn on the limo mode.
 Monsieur Le Grenadier
I've not been everywhere, but it's on my list..... 2011 Puma 110DC - Corris Grey |
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6th Dec 2018 6:57pm |
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| Eduardo Member Since: 28 Aug 2008 Location: Región Metropolitana Posts: 2110
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I cannot take out the catalizer (MOT restrictions in the city) I have also a temp readed connected to the ODB So I can low the gear when the temp goes up to 105°C but is quite anoying in special in the long trips. Eduardo MY 2007 110 SW PUMA 2.4: Big Fog of 64' MY 1994 Jayco 1207 Folding camper: "El Tremendo" Click image to enlarge |
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7th Dec 2018 3:12pm |
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| Eduardo Member Since: 28 Aug 2008 Location: Región Metropolitana Posts: 2110
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Thanks for the idea If the radiator fails I will study to do it Eduardo MY 2007 110 SW PUMA 2.4: Big Fog of 64' MY 1994 Jayco 1207 Folding camper: "El Tremendo" Click image to enlarge |
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7th Dec 2018 3:14pm |
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