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#1 |
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Senior Member
Join Date: Dec 2011
Posts: 100
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Hi, have a problem with fuel consumption. Its 25mpg driving in city! Something wrong, i had 406 2.0hdi 90bhp before and i was getting at least 37.
Its same engine and i cant understand why mpg is so low?? The belt was changed, oil, oil filter, air filter, fuel filter. I cleaned the MAF sensor made no difference, tried to disconnect the maf sensor still same, not even error message, check with pp2000 - there is no faults. I just dont know what to do.. Its only 81000 on a clock. Any ideas? maybe its MAF? if disconnected or connected no difference, maybe its time for a new one? Thank you! Last edited by peugeotown; 12-20-2011 at 12:32 PM. |
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#2 |
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Senior Member
Join Date: Dec 2011
Posts: 100
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PLEASE..
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#3 |
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Senior Member
Join Date: Sep 2010
Location: St Austell, Cornwall
Posts: 2,969
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I'm surprised you managed to get 37mpg driving in town
![]() I wouldn't be expecting to get that high.... 25 is a bit low, but it really does depend on what the driving actually is. What is the average mph showing?
__________________
407SW 2.0HDI 136 SE 2005 ex. 306 2.0HDI 90 (x2) |
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#4 |
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Senior Member
Join Date: Dec 2011
Posts: 100
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average is 25mpg
and driving normal, no hard pedal. So thats definately something wrong
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#5 |
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Senior Member
Join Date: Dec 2011
Posts: 100
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sorry, mph is 16 i think
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#6 |
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Senior Member
Join Date: Jun 2011
Location: Newtownards, NI
Posts: 136
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tyres pumped up, no fancy alloys, no dragging brakes?
belt timed correctly? |
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#7 |
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Senior Member
Join Date: Dec 2011
Posts: 100
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tyres fine, 15" original alloys, brakes fine, timing belt done and engine sounds good, cant say that its something wrong with belt, puls like train, no prob with power. Ordered new MAF sensor so will see what difference it will make.
Thanks |
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#8 |
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Senior Member
Join Date: Sep 2010
Location: St Austell, Cornwall
Posts: 2,969
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Average 16mph
![]() No wonder you're down at 25mpg ![]() How on earth did the 406 manage 37mpg at that speed
__________________
407SW 2.0HDI 136 SE 2005 ex. 306 2.0HDI 90 (x2) |
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#9 |
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Senior Member
Join Date: Dec 2011
Posts: 100
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not on that speed, more then 16mph
dont remember now. But that was mostly city driving.With new pug no more then 25mpg average, and driving everywhere same as i did with my 406. Thats why its something wrong here. Can it be EGR? or something else except MAF? Maybe accelerator pedal sensor? Thanks |
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#10 |
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Senior Member
Join Date: Sep 2010
Location: St Austell, Cornwall
Posts: 2,969
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Until you're average speed is greatly improved on, I can't see that you will be getting the mpg to increase. Even if as you say it includes all your driving, to have an average of 16 is extremely low - you must be 90% city, 10% country to get it as low as 16... I've never managed that, ever. My average is currently running at 28mph which is a mix of town & urban, and I get 38mpg, that said, thats from the 136 2.0HDI engine.
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407SW 2.0HDI 136 SE 2005 ex. 306 2.0HDI 90 (x2) Last edited by jmkent; 12-20-2011 at 07:23 PM. |
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