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Just had a chance to try the new Subaru Diesel, in an Outback. Very surprised at how long it took to warm up, even after idling for some minutes outside the dealers (why?). Didn't feel much heat from the heater either. Much depends on this long-awaited engine. Hope its going to be ok.
Edited by Webmaster on 23/03/2008 at 12:47
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Is this yet another HDi diesel?
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Probably just to make all the Subaru owners, who feel that they need to leave their Imprezas idling for 10 mins before driving off, at home!
Have one along the road from me who drives me mad! Every morning, 7.30am, the engine gets started. Fromtalking to other neighbours he basically wakes the whole street 15 doors either side of him. He then lets it warm up for 10 mins before driving off. And my house is just at the point where he changes from first to second gear!!
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Ahem petrol heads - it is well known that an efficient diesel takes a very long time to warm up. As HJ said yesterday, a Legacy 4WD diesel wagon is more economical than the equivalent FWD Mondeo wagon.
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........... it is well known that an efficient diesel takes a very long time to warm up.
That's no good on a cold frosty morning when the windows are all iced up and the inside of the car is at ambient air temperature.
Edited by L'escargot on 02/05/2008 at 12:04
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Have one along the road from me who drives me mad! Every morning 7.30am the engine gets started. Fromtalking to other neighbours he basically wakes the whole street 15 doors either side of him. He then lets it warm up for 10 mins
Steal it? Or just ring the police?
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Ring the police and say what? That he is running his engine?
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>>Ring the police and say what? That he is running his engine? <<
Yes exactly that - it is against the law - I forget what the legal term is but it is something that the owner can be prosecuted for - as was a man recently for warming his car up on cold morning and left it unattended.
Leaving your car unsupervised whilst the engine is running will warrant a fine and 3 points - I will try an get my bobby mate to remind me of the actual name of the offence but if you report they will have to act.
Edited by Pendlebury on 23/03/2008 at 20:38
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Cheers P for that - does it make any difference that he sits in the car and, believe it or not, watches his big plasma TV through his living room window (car is parked directly in front of house!)
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Yes exactly that - it is against the law - I forget what the legal term is
Quitting.
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That's it mfarrow - thanks - that was driving me crazy trying to remember that as said bobby mate is away on hols and I did not want to bother.
report him for quitting.
Edited by Pendlebury on 24/03/2008 at 20:06
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Very surprised at how long it took to warm up even after idling for some minutes outside the dealers (why?).
Most (all?) diesels are like this, because they're more efficient than petrol engines they don't generate as much heat. Some never warm up at idle.
Usually there's some form of heater assist, though.
Edited by Bill Payer on 23/03/2008 at 11:14
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Long warm up was one of the most common comments for the then new highly efficient diesel Tdi Discovery in 1989.
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Does that mean that for say a 5 mile trip to work each day - a diesel would not be very efficient ?
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Does that mean that for say a 5 mile trip to work each day - a diesel would not be very efficient ?
I don't think many engines would be (with the exception of electric ones). A small petrol engine may just warm up on a hot day at the end of a 5 mile trip. I very much doubt that a diesel, or even a large petrol engine would warm up in 5 miles. I would say that a diesel is still probably better for short trips because I think they're supposed to cope better with not warming up. However, I wouldn't actually consider getting a dirty diesel unless I really had to.
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A diesel would be efficient because there is little enrichment if any after it is started;just not much heat from the heater.
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I should add that the heat used for the heater is waste heat;if the heater was not there,it would be disposed of by the radiator;a 100% efficient engine would not put out any heat.
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Does that mean that for say a 5 mile trip to work each day - a diesel would not be very efficient ?
More efficient than a petrol.... but the heater wouldn't be as useful!
My Fabia takes around 7 minutes before warm air starts coming through the heater vents...
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My workvan (peugeot partner diesel) is blowing warm air from the heater within a mile or two of travel ,say five minutes, and at normal operating temperature within five miles, but when I leave it ticking over in an attempt to keep warm during my half hour breaks it's barely warm before break is over.Obviously it warms up faster when being driven.This would suggest to me that leaving a diesel to warm up before driving is a futile and expensive exersize.
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My workvan (peugeot partner diesel) but when I leave it ticking over in an attempt to keep warm during my half hour breaks it's barely warm before break is over
There's something wrong with it then, as new ones will defrost the windows within 5 minutes of starting easily. Fan jammed on or thermostat stuck?.
In fact all my diesels have warmed up reasonably quickly, but i've only had one modern euro4, but thats pretty quick too.
Shouldn't admit it but always let my cars warm up a bit before moving off, i cant abide that tortuous sound a cold engine makes when driven.
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My Yaris 1.4 diesel takes a long time to warm up. Certainly 5, maybe 10 minutes or more of actual driving before you get heat. So it's not just the Subaru...
Suss
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The diesel engine in my Skoda Octavia (2.0 PD TDI) takes a while to warm up ang blow hot air, and with leather seats I'm glad they are heated on these cold mornings!
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I have new(ish) A-Class 180 cdi. Although the temp guage takes about 5 miles (about15 minutes of deiving) to show normal temperature, hot air comes out of the vents after about 1 minute - the new A-Classes have a supplementary PTC heater to provide rapid warmth.
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gordonbennet Re read my earlier post please.
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Misunderstanding. I mean that when i get a line of 9 of them to load up and theyre all frozen, if i start them up, by the time i've got to the last one the front vehicle is starting to defrost.
Sorry, i ididnt explain myself as usual.
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Thanks G
one day I must tell you the story of the detached chrome strip, the level crossing, and the overhead powerline.Happy transporting.
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isisalar - just remember the strength of the folk memory in this place !
We will remind you !
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Start a thread then , something along the lines of 'Most bizzare motoring related accidents'
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Done that, I think this could make an interesting thread.
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I have new(ish) A-Class 180 cdi. Although the temp guage takes about 5 miles (about15 minutes of deiving) to show normal temperature hot air comes out of the vents after about 1 minute - the new A-Classes have a supplementary PTC heater to provide rapid warmth.
I drove an A 180CDi a few weeks ago and, without a word of lie, I backed it out my drive on a freezing cold day after it had been there for 8hrs and before I got to the end of our road - 200yds at most - it was blowing warm air out of the face level vents.
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It's not just modern diesels that suffer this phenomenon. My old Mondeo TD wouldn't warm up at all at idle, and if you got stuck in traffic on a really cold morning, the temperature gauge would actually drop back towards cold, particularly if the engine hadn't reached normal operating temperature. The Scenic does the same thing.
Warmup time in driving conditions was OK, as long as you didn't stop.
Cheers
DP
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It is always a waste of time attempting to warm a highly thermally efficient diesel engine at idle. You must put load and revs on them to warm them. This would be no surprise if you've lived with modern diesel cars for a while.
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