 | Home > Technical > Power loss in hot weather? |
 
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| ZeDefender Member Since: 15 Sep 2011 Location: Munich Posts: 4731   
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I was wondering if heat build-up in the cat was the problem but it sounds as though the intercooler is indeed the culprit. Cheers Matt Tell someone you love them today because life is short. But shout it at them in German because life is also terrifying and confusing... |
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20th Jun 2012 7:48am |
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| Naks Member Since: 27 Jan 2009 Location: Stellenbosch, ZA Posts: 2661  
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the funny thing is, it only happens to some Defenders and not others. Why? --
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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20th Jun 2012 9:32am |
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| ZeDefender Member Since: 15 Sep 2011 Location: Munich Posts: 4731
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That's why I questioned the RAI design to start with - I never had a problem last year before the RAI was fitted
Naks - does yours do it? Tell someone you love them today because life is short. But shout it at them in German because life is also terrifying and confusing... |
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20th Jun 2012 9:39am |
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| Naks Member Since: 27 Jan 2009 Location: Stellenbosch, ZA Posts: 2661
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Nope, mine has had a Mantec RAI since day 1 and has never had a power loss, even with BAS remap in 40C Cape Town summer weather. -- 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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20th Jun 2012 9:46am |
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| Regard Member Since: 08 Dec 2011 Location: RSA Posts: 251 
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But I have the Mantec RAI and mine does it??? Might it have anything to do with higher temps in combination with altitude? But then again some of the people that had the problem lived in Durban......? And I gues Germany is not the worlds highest country  |
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20th Jun 2012 9:57am |
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| ZeDefender Member Since: 15 Sep 2011 Location: Munich Posts: 4731
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We're 700m above sea level in Bavaria which seems to affect the number of eggs you need to made decent Yorkshire pudding - not sure if that's relevant
p.s. Think it's about 2% reduction in air density c.f. sea level p.p.s. Just checked and the difference in air density at 1000m between 22 degrees and 37 degrees is 6% - suppose that could be quite relevant for a vehicle that is struggling already... Tell someone you love them today because life is short. But shout it at them in German because life is also terrifying and confusing... |
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20th Jun 2012 11:10am |
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| Regard Member Since: 08 Dec 2011 Location: RSA Posts: 251
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I am at 1400m ASL. But like I mentioned, there are some okes in Durban (sea level, you know......there where the 'Boks wipped your team 2 weeks ago  ) who also had the same issue. |
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20th Jun 2012 11:35am |
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| ZeDefender Member Since: 15 Sep 2011 Location: Munich Posts: 4731
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Interested whether guys e.g. 1000m ASL don't have this problem... How high up are you Naks? Tell someone you love them today because life is short. But shout it at them in German because life is also terrifying and confusing... |
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20th Jun 2012 11:58am |
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| Naks Member Since: 27 Jan 2009 Location: Stellenbosch, ZA Posts: 2661
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Right now, not as high as I would like. Stuffy nose, shivers, coughing up half a lung, throat on fire 
I'm at the coast, 10m at home and about 300m at work. -- 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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20th Jun 2012 12:02pm |
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| ZeDefender Member Since: 15 Sep 2011 Location: Munich Posts: 4731
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Get well soon
Matt Tell someone you love them today because life is short. But shout it at them in German because life is also terrifying and confusing... |
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20th Jun 2012 12:32pm |
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| Eduardo Member Since: 28 Aug 2008 Location: RegiĆ³n Metropolitana Posts: 2110  
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Take care Naks
In our case the problem is not related with high altitudes. at 400 m or at the sea level the problem appears to be the same. Im following this thread with interest 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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20th Jun 2012 12:57pm |
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| MK Member Since: 28 Aug 2008 Location: Santiago Posts: 2453 
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1800 masl 32°C, uphill and fine. Now if I would to apply FT then coolant temp goes over 105°C and more, easily. The only way to solve it is by going down gear (faster fan and water circulation). Sure you cannot do that on the autobahn. Puma 110" SW
............................................................. Earth first. Other planets later |
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20th Jun 2012 1:01pm |
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| wslr Member Since: 18 Jul 2010 Location: Wellington, Somerset Posts: 581 
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Perhaps it could be something built into the powertrain software version on your vehicles? Perhaps an update and having a remap built on top of it again would solve it?
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20th Jun 2012 2:06pm |
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| Regard Member Since: 08 Dec 2011 Location: RSA Posts: 251
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Nope, remap doesn't solve it. |
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20th Jun 2012 2:19pm |
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