 | Home > Td5 > Fuel consumption when idling? |
 
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| Peter Td4 Member Since: 23 Oct 2010 Location: Antwerp, Belgium Posts: 228   
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Not sure really but I guess this would be something around 1 to 1.5 liters / hour.
In case you have to do this, just make sure you don't get any exhaust gases inside your Defender. Peter, Defender 110 StaWa - Td5 Defender 110 HCPU - Puma Defender 90 Soft Top - Td5 |
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17th Feb 2011 9:08pm |
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| diesel_jim Member Since: 13 Oct 2008 Location: hiding Posts: 6093  
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It's also suprising how cool the engine gets at idle... after an hour or so, the heater really just blows out cool air.
you may have to block off the radiator to get it to warm up a bit.(but keep an eye on the temp guage!) |
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17th Feb 2011 9:11pm |
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| robpenrose Member Since: 15 Jan 2011 Location: Hampshire or Cornwall Posts: 338
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is it as little as 1-1.5 l an hour? I thought it would be much more than that.
Also i rad muff would help, i cant see it overheating especially if its in -10,-20,-30 temps with the heater blowing out hot air (well on a TD5 anyway) Current:D4 HSE Gone: BMW Z4MC Gone: Defender TD5 90 CSW Previous: Discovery TD5 ES (Gone) |
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17th Feb 2011 9:16pm |
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| Setok Member Since: 16 Jan 2009 Location: Helsinki Posts: 422 
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Yeah, at -20 in Helsinki it's doing that even just slowly driving around town. The gauge can go all the way down into blue territory, so I've been thinking about us getting some kind of rad muff. It's not just Landies that suffer from this either as it's not at all uncommon to see vans and even some cars with cardboard covering the front grill. I prefer the MOD look, though! |
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17th Feb 2011 9:22pm |
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| Lorryman100 Member Since: 01 Oct 2010 Location: Here Posts: 2686 |
In the recent cold snap up here (Scotland, was waiting at the Train station on my missus who's train was late) the scangauge showed -19c and the Landy started blowing cold air after 10 mins. The coolant temp (scangauge measures this in the cylinder head and not the radiator) dropped from 88c down to a steady 38c at tick over, in essence the heater was blowing cold air! I don't have a radiator cover fitted. Also from memory my Puma ticks over at 800rpm and the LPH is 0.96 (scangauge again). |
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17th Feb 2011 9:30pm |
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| Setok Member Since: 16 Jan 2009 Location: Helsinki Posts: 422
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Yeah, so any plans to sleep in the car with the engine ticking over have to be supplemented with a rad muff... Of course it still saves you having to worry if the car will fire up at -30C. Temperatures last night were around -23C and it took a good few seconds before the Landy spluttered into action. While it doesn't have a Webasto (yet!), it does have a pre-heater that you plug in. Unfortunately I found out in the morning that I hadn't pushed the plug in all the way
1–1.5l per hour sounds very reasonable. If that's all it uses then it could make a lot of sense to keep it running overnight, if one ever ends up in a situation like that. |
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17th Feb 2011 9:46pm |
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| Glynparry25 Member Since: 16 Feb 2009 Location: Miserable Midlands Posts: 3015  
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A rad muff is the way ahead to keep the heat in the engine. 
It will start as low as -30  ... I know from experience, we were hitting -35 without wind chill in Austria and the Defender started every other morning without an issue- as long as you have the correct grade of fuel which you will there 
Glyn   |
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17th Feb 2011 9:48pm |
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| Setok Member Since: 16 Jan 2009 Location: Helsinki Posts: 422
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Would it still be normal for it to have to turn the engine for a few seconds before catching at below -20C? Modern petrol cars tend to still fire up quite quickly even then, but obviously that's a different combustion process, and you'd expect them to.
Just wondering if it's an early sign of something that could be checked. I've never used a diesel in temperatures like this, so it's all new. |
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17th Feb 2011 10:03pm |
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| Glynparry25 Member Since: 16 Feb 2009 Location: Miserable Midlands Posts: 3015
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It does take a little longer. in temperate conditions the engine starts in a second where the colder it gets the longer it takes (maybe 2-3 seconds). Another trick is to do the glow plugs 2/3 times before starting
Glyn |
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17th Feb 2011 10:08pm |
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| chopdogs Member Since: 10 Mar 2010 Location: Wiltshire Posts: 108 
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Modern diesel engines actually run very cold (compared to older engines) Hence why Discos (and others) have fuel burnng heaters fitted.
Unfortunately, I would guess most don't actually work* and the owners don't even know they have them............ * for example, they lock out after three failed attempts to ignite. They will not ignite if the car is low on fuel. So, it'll lock out if you stop the car twice on the way to the petrol station if SWMBO brings the car back running on empty |
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5th Apr 2011 8:14pm |
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