 | Home > Puma (Tdci) > Coolant temperature |
 
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| Eduardo Member Since: 28 Aug 2008 Location: Región Metropolitana Posts: 2110   
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Hi there,
Again the Defender are doing strange things. During the day and after start the motor loose power after change to 3rd gear in normal city traffic conditions. Temperature outside should be less than 25-30°C Just a quick question: How should be a normal range of coolant temperature after 1 hr in normal traffic? The ODB are reading almost 87°C. Ambient temp around 18°C but the intake shows more than 55°C Anything wrong? 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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9th Apr 2014 1:10am |
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| dgardel Member Since: 30 Nov 2008 Location: Veneto (Heart & Head) Posts: 3586 
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Ciao Edo,
Into the traffic the manifold T is correct, low air flow demand and the engine bay is a sort of hot bubble. Anyway it seems a: 1. electrical problem (one sensor goes crazy with the Temp) 2. EGR? 3. what else? Have you the possibility to check the DTC presence? Discovery 5 td6 HSE Stornoway Gray Outback Engineering Limited Edition
IID Pro MV License |
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9th Apr 2014 5:07am |
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| Eduardo Member Since: 28 Aug 2008 Location: Región Metropolitana Posts: 2110
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Thanks for the answers
Mine is a MY 2007 with 172.000 km in the clock No DTC stored and the EGR has been void by remap (allways closed). So I will check the sensors and the manifold to see if something is wrong there Cheers and thanks again 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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9th Apr 2014 11:20am |
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| Mongolia Member Since: 23 Jun 2013 Location: Toulouse Posts: 45 
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Me too, mine is MY2007, 180000km on the clock and no EGR issue which seems clean and working well
I have an issue of power loss, with no DTC (except once a DTC upon the turbo actuator which disappeared ), never MIL light on and the MAP sensor was clean After removing the air intake manifold, I saw that there was a layer of soot 5mm obstructing the air intake . Before, my ScanGauge was showing an air intake temperature ranging from the normal temperature (ambient air + 0°/5°) to 60°/90° Now, after cleaning, my ScanGauge indicates the correct temperature (ambient air + 0°/5 ° ) and I partially solved my issue of power loss |
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9th Apr 2014 1:56pm |
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| Eduardo Member Since: 28 Aug 2008 Location: Región Metropolitana Posts: 2110
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Thanks Mongolia I will do that
 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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9th Apr 2014 3:40pm |
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| Lorryman100 Member Since: 01 Oct 2010 Location: Here Posts: 2686 |
If the OBD scan tool is showing ambient air temps of 55 degrees C when the outside air temp is nowhere near that figure I would be looking at replacing the MAF sensor as that is the sensor were the AI temp is taken for the EMS to carry out fuelling requirements in the burn. Would also be worth removing and cleaning the MAP sensor as that is also a temp sensor but more for the temp of the air going into the inlet manifold.
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9th Apr 2014 10:18pm |
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| Mongolia Member Since: 23 Jun 2013 Location: Toulouse Posts: 45
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Hi Lorryman,
On my car, the first thing I did is changing the MAP and MAF sensors, which do not change the temperature showed by my ScanGauge. Therefore, wanting to change my glow plugs, I had to disassemble the air intake pipe and I found it covered by a thick layer of fat scale. After cleaning, the temperature of the air intake came back to normal. However, as the cylenderhead top and valves cannot be cleaned without disassembly, I think that all the air flow could not be restored and I have not yet recovered all the power loss |
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10th Apr 2014 6:41am |
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| Lorryman100 Member Since: 01 Oct 2010 Location: Here Posts: 2686 |
If you remove the MAP sensor you can see on the bulb how contaminated the inlet manifold can get if the EGR is not disabled, Eduardo has his EGR disabled by software so should show less contamination over a standard duratorq with the same mileage with a working EGR..
Click image to enlarge Admin note: this post has had its images recovered from a money grabbing photo hosting site and reinstated  |
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10th Apr 2014 6:30pm |
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| LR90XS2011 Member Since: 05 Apr 2011 Location: bickenhill Posts: 3641  
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is there a simple way to disable the EGR without a remap
SCRUB THAT FOUND LORRYMANS PREVIOUS POSTS ON UNPLUGGING DEFENDER 90 TDCI XS, I hope everyone is well and your land rovers make you happy |
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10th Apr 2014 7:32pm |
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| Eduardo Member Since: 28 Aug 2008 Location: Región Metropolitana Posts: 2110
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Thanks Lorryman I will check it to see what happens.
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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10th Apr 2014 8:04pm |
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| Mongolia Member Since: 23 Jun 2013 Location: Toulouse Posts: 45
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[quote="Lorryman100"] If you remove the MAP sensor you can see on the bulb how contaminated the inlet manifold can get if the EGR is not disabled, Eduardo has his EGR disabled by software so should show less contamination over a standard duratorq with the same mileage with a working EGR..
On MY2007 or MY2008 Defender, the cooling of the pistons is bad and sometimes one or two cylinder rings are broken on cylinder N° 2 or N°3 (why these one, i dont know?). So, oil vapors are sucked through the breather, and therefore by the turbo to the engine. This could explain the air intake pipe is clogged by a fat carbon déposit. Another idea? |
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10th Apr 2014 9:08pm |
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| Eduardo Member Since: 28 Aug 2008 Location: Región Metropolitana Posts: 2110
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Again the Defender do the same, this time in cold
I Check the MAF and doesnt look too dirty (probably the same dirt that I had when I bougth the remap). I have the thought that the problem can be the thermostat, the coolant looks too hot after 1/2 to be stopped. I will check tomorrow with my Indy to see if some sensor is going wrong. 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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11th Apr 2014 11:52pm |
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| Mongolia Member Since: 23 Jun 2013 Location: Toulouse Posts: 45
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Hi Eduardo, and all guys,
Sorry for my bad english but it is not my native language... I just get my car from my indy and now the car seems to have recovered all his power loss. With my first indy, the injectors were checked (correct), glow plugs, MAP and MAF sensors changed and the intake air cleaned, but my power loss was only partly solved. I changed my indy and the new one removed my EGR valve (it was 120000km old, worked well and was very clean), the catalyst (also very clean) but mostly added a ring to the axis of the turbo actuator which was loose (this disturbed the turbo from having a good pressure ). Now it seems to work fine but I will need certainly to change my turbo because it is getting tired (2 wings are worn but the axis is not loose ) |
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12th Apr 2014 8:10am |
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| Eduardo Member Since: 28 Aug 2008 Location: Región Metropolitana Posts: 2110
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Mongolia,
No problem, English is not my mother tongue also. Thanks for the update, but appears that my problem is different. Most of the time the power is good and the power loss are isolated events (3 to 4 events per trip) and then the power is recovered without any DTC. 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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12th Apr 2014 12:13pm |
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