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S80 '06-'16 / V70 & XC70 '07-'16 General Forum for the P3-platform S80 and 70-series models |
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XC70 D5 poor MPGViews : 6069 Replies : 52Users Viewing This Thread : |
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Feb 16th, 2020, 13:56 | #41 | |
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2012 XC70 SE Lux Polestar 230 bhp D5 Auto Oyster Grey |
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Feb 17th, 2020, 22:42 | #42 | |
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@V70Zig - Thank you for the pictures. It looks simple enough!
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2007 S80 2.4 D5 - 110,000 miles |
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Feb 18th, 2020, 11:25 | #43 |
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For these models, there were 5-cylinder diesels with 2.0 and 2.4 liter capacity.
Power ranges from 163 to 230 hp. Today, there are four cylinder diesels badged with D4 as well as D5. The newest are badged B5 or B4, but that's regardless of whether they are petrol or diesel engines. |
Mar 16th, 2020, 20:48 | #44 |
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Just to update guys, I haven't got around to getting the stat changed yet. On my car it is not the same as pictured earlier, it is a complete housing fitted at the rear of the engine, and looks a reasonable amount of work to change, as well as costing around £120. I am working on the theory mentioned that it is stuck open, therefore running cool and overfueling ( i hope). Due to the situation in the country at the moment I may not get around to it for a while, but I will post when completed.
Be safe everyone. |
Apr 1st, 2020, 15:35 | #45 |
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I've only just read this thread - my 2010 (60 plate) XC70 D5 205 averages mid thirties to the gallon - mainly around town, a little better on a run, but they are few and far between - tyre pressures are 41psi all round on Nexen's.
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2010 XC70 SE Lux 205bhp D5 Auto Seashell |
Apr 2nd, 2020, 16:06 | #46 | |
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2012 XC70 SE Lux Polestar 230 bhp D5 Auto Oyster Grey |
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Apr 5th, 2020, 21:35 | #47 |
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I'll have to check, but I'm almost sure that I read it on this forum in the first instance?
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2010 XC70 SE Lux 205bhp D5 Auto Seashell |
Apr 5th, 2020, 23:25 | #48 |
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It's the high speed/heavy load pressure. Same pressure on the car in your signature.
I always find 41psi to be a tad harsh when driving solo and dropping to the comfort pressure whilst very nice indeed, it introduces more understeer. So 38 psi for alleged better economy is where I'm at. I get 34mpg to work and back. I don't see that as too bad for a heavy car. |
May 3rd, 2020, 09:39 | #49 |
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Ok, so quick update. New thermostat now fitted, tyres all round are at 38psi. Obviously can't go for a run anywhere, but there seems to be no improvement in mpg for the short run to the shops🙄 maybe once I can get out and about to get the average up, it might improve, but at this rate, this will be the last old Volvo I will have.
My old xc90, as underpowered and heavy as it was, was still more economical than the more "modern" xc70, maybe just have to find a suitable v90🤔 |
May 3rd, 2020, 11:49 | #50 |
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Sorry, forgot to mention. Car does now heat up as it should, and reach temperature, so "problem" sorted by the change, just doesn't seem to have had the desired effect on the fuel economy.
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