 | Home > Puma (Tdci) > Another temperature sensor |
 
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| sparkylee Member Since: 06 Nov 2010 Location: surrey Posts: 1455  
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Have you thought about a scangauge and then you can view lots of different temps and pressures
Mines mounted in a mud pod on top of dash above clock Do a search to find previous posts very usefull bit of kit It's good to be back from the dark side DC110 -2012 Black with black hood and black x-tech FFRR 4.2 vogue Renault traffic auto PT crusier convertible Laika x700 Motorhome |
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26th Aug 2012 12:05pm |
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| WelshGas Member Since: 01 Oct 2010 Location: Vale of Glamorgan Posts: 935  
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why not get a Scanguage, and then you can monitor virtually ALL the built in sensors in real time, and monitor
the DTC codes and clear them if necessary. http://www.scangauge2.co.uk And check this thread - excellent write up by a Defender2.net member: http://www.defender2.net/forum/topic10829.html LANDYWATCH 
Neighbourhood Watch for Land Rover Owners http://www.landywatch.co.uk/smf2/index.php |
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26th Aug 2012 12:08pm |
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| Lorryman100 Member Since: 01 Oct 2010 Location: Here Posts: 2686 |
I always thought a good place to mount another temp sensor would be at the engine side of the thermostat, exactly where would need further investigation. This would then give a reading of actual coolant temp.
The scangauge/ultragauge/IDS/MSV2 uses the same sensor address as the IPAC though gives an actual numerical degrees Celsius reading unlike the vehicles instrument temp gauge. The needle in the temp gauge on the IPAC won't start to rise until the actual CHT temp reaches between 100-105 degrees Celsius.  |
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26th Aug 2012 12:26pm |
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| ericvv Member Since: 02 Jun 2011 Location: Near the Jet d'Eau Posts: 5816  
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Several times I have been reading now that the temp gauge does not move north of half way up (or normal) until the temp is really too high, and then does so in a drastic way, i.e. not moving gradually higher above the half way position in line with the rising coolant temp, but in a rather sudden move from middle position to all way up. Why is this? Between cold and normal working temp, the gauge DOES move gradually up and back down with the changing coolant temp. For instance in the winter here, when driving from our country side into city traffic, the temp gauge first gradually will move from cold to normal (midway up), but then with cold weather when sitting in traffic and engine is idling a lot, the temp gauge will gradually move down again to cold, seemingly fully in line with the coolant temp change.... So it seems that the standard gauge works the way it should work from cold to normal, but once coolant temp moves higher than normal it does not behave that way anymore, and only shows dramatically high coolant temp when damage has been done or is about to be done. Any explanation? You never actually own a Defender. You merely look after it for the next generation. http://youtu.be/yVRlSsJwD0o https://youtu.be/vmPr3oTHndg https://www.youtube.com/watch?v=_GtzTT9Pdl0 https://www.youtube.com/watch?v=ABqKPz28e6A https://www.youtube.com/watch?v=rLZ49Jce_n0 https://www.youtube.com/watch?v=XvAsz_ilQYU https://www.youtube.com/watch?v=K8tMHiX9lSw https://m.youtube.com/watch?v=dxwjPuHIV7I https://vimeo.com/201482507 https://www.youtube.com/watch?v=ZSixqL0iyHw |
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26th Aug 2012 12:49pm |
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| wslr Member Since: 18 Jul 2010 Location: Wellington, Somerset Posts: 581 
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The engine temperature sensor is located in the cylinder head, and does not read coolant temperature, but cylinder head temperature. Obviously, you want to know when the coolant is hot, not the head. I guess the OP already knows this and wants to monitor coolant temp before damage is done?
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26th Aug 2012 1:11pm |
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| Apynala Member Since: 17 Oct 2009 Location: Morroco Posts: 88  
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Hello,
Thanks for your replies, Monday, I was driving (like an asshole  )on a mountain highway between Agadir and Marrakech, outside temperature was close to 50°C. Suddenly, I felt a cough and saw temperature needle climbing to red zone. I stopped engine immediatly, coolant was boiling over the tank. I wait 20min, put water and go back home.
Now I'd like to know was the difference of temperature of the engine to analyse it when driving. Thanks. |
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26th Aug 2012 2:28pm |
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| Lorryman100 Member Since: 01 Oct 2010 Location: Here Posts: 2686 |
@ericvv
The CHT on my Puma tends to fluctuate between 89-100 degrees Celsius. This all depends on whether or not I am towing, the weight and the outside temperature. If the IPAC gauge was to show the actual CHT temp when doing the above the temp gauge needle would constantly be moving from the middle to near the top on a regular basis which would worry most owners and increase the warranty claims for something that is normal. I believe that the upper end of the temp is regulated by the IPAC to show normal temp reading on the gauge even though the actual CHT temp is fluctuating between say 90-100 degrees Celsius. However once the actual CHT increases beyond the 100-105 degree Celsius bracket the IPAC then moves the temp needle up into the red. I am currently using an ultragauge which shows me the fluctuating temp range dependant on what I am doing with the Puma and allows me to drive accordingly As to the original question of fitting an additional coolant specific temp sensor, I don't personally feel the need for it if I'm honest. If you look at where the CHT sensor is located at the rear of the engine it is in the best position to report on the head temp. If it was at the inlet side of the coolant arriving in the head it would be to cool in its readings and too hot if it was close to the thermostat. However the thermostat opens at a set temp and if it doesn't then the CHT will rise to a point that the EMS will instigate the overheating protocol to protect the engine. Therefore a gauge tool like a scangauge or ultragauge would in my opinion be a better way of tackling the sudden rise of the temp needle by way of constantly monitoring the CHT temp and driving accordingly. Just my view though, HTH Brian. |
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26th Aug 2012 3:04pm |
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| leeds Member Since: 28 Dec 2009 Location: West Yorkshire Posts: 8581
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On our red 110 we have an Engine watchdog fitted.
You set the alarm at the temperature you want the AUDIBLE alarm to go off at. Dependent on the actual pressure within the coolant system and the coolant concentration the coolant will boil between about 106-120C. We have the alarm set at about 98C. When on rare occasion the alarm goes off we sit and watch the world go by for 20 minutes or so. Most people are normally too busy to watch gauges, so I like the audible feature. It has saved a cylinder head job once so has earned its keep. It is Australian made, yes we have some on our shelves. Brendan |
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26th Aug 2012 3:35pm |
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| Lorryman100 Member Since: 01 Oct 2010 Location: Here Posts: 2686 |
Brendan, how does it monitor the coolant temp?
Brian. |
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26th Aug 2012 3:39pm |
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| ericvv Member Since: 02 Jun 2011 Location: Near the Jet d'Eau Posts: 5816
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Tks for explanation Brian. I think I would prefer to be able to see the gauge show the real temp, it would allow me to eventually slow down and reduce pressure on engine system, or stop for a moment to allow cooling, in case of need. It would give better guidance as to how one should be treating the Puma than how the set up is now, which is something of a "blob". Is there any way to change the software for this coolant gauge, so that it would show the real coolant or engine temp, so that we can see when it gets into the 90's and upper 90's, when it is time to slow down? You never actually own a Defender. You merely look after it for the next generation. http://youtu.be/yVRlSsJwD0o https://youtu.be/vmPr3oTHndg https://www.youtube.com/watch?v=_GtzTT9Pdl0 https://www.youtube.com/watch?v=ABqKPz28e6A https://www.youtube.com/watch?v=rLZ49Jce_n0 https://www.youtube.com/watch?v=XvAsz_ilQYU https://www.youtube.com/watch?v=K8tMHiX9lSw https://m.youtube.com/watch?v=dxwjPuHIV7I https://vimeo.com/201482507 https://www.youtube.com/watch?v=ZSixqL0iyHw |
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26th Aug 2012 3:56pm |
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| ericvv Member Since: 02 Jun 2011 Location: Near the Jet d'Eau Posts: 5816
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Brendan, I would be interested to hear more about this too. Easy to install, reliabliltiy, etc.? You never actually own a Defender. You merely look after it for the next generation. http://youtu.be/yVRlSsJwD0o https://youtu.be/vmPr3oTHndg https://www.youtube.com/watch?v=_GtzTT9Pdl0 https://www.youtube.com/watch?v=ABqKPz28e6A https://www.youtube.com/watch?v=rLZ49Jce_n0 https://www.youtube.com/watch?v=XvAsz_ilQYU https://www.youtube.com/watch?v=K8tMHiX9lSw https://m.youtube.com/watch?v=dxwjPuHIV7I https://vimeo.com/201482507 https://www.youtube.com/watch?v=ZSixqL0iyHw |
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26th Aug 2012 3:58pm |
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| ericvv Member Since: 02 Jun 2011 Location: Near the Jet d'Eau Posts: 5816
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And by the way, anybody knows what is the "ideal" coolant temp for our Pumas? I know with Mercedes they say this is 82°C. You never actually own a Defender. You merely look after it for the next generation.
http://youtu.be/yVRlSsJwD0o https://youtu.be/vmPr3oTHndg https://www.youtube.com/watch?v=_GtzTT9Pdl0 https://www.youtube.com/watch?v=ABqKPz28e6A https://www.youtube.com/watch?v=rLZ49Jce_n0 https://www.youtube.com/watch?v=XvAsz_ilQYU https://www.youtube.com/watch?v=K8tMHiX9lSw https://m.youtube.com/watch?v=dxwjPuHIV7I https://vimeo.com/201482507 https://www.youtube.com/watch?v=ZSixqL0iyHw |
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26th Aug 2012 4:03pm |
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| Lorryman100 Member Since: 01 Oct 2010 Location: Here Posts: 2686 |
Just checked the website and it uses a contact temp probe which is mounted onto an existing fitted engine block bolt. It is no different in the way it works to the standard fitted CHT sensor which is mounted in the rear of the engine block.
The ultra gauge offers an audible alarm to be set on all the sensors it monitors, which are numerous. Click image to enlarge If I wanted a true coolant level and temp gauge I would fit the madman EMS1 or 2. They also offer a dedicated stand alone coolant level detector (bottom of page in the below link). http://www.madman.co.za/madman_products.htm Brian. |
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26th Aug 2012 4:11pm |
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| Lorryman100 Member Since: 01 Oct 2010 Location: Here Posts: 2686 |
Mine is 89-90 degrees with normal solo driving.
http://www.defender2.net/forum/post76145.html#76145 Last edited by Lorryman100 on 26th Aug 2012 4:21pm. Edited 1 time in total |
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26th Aug 2012 4:16pm |
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