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MINI Cooper Diesel MINI Cooper Diesel 2007 - Present

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  #16 (permalink)  
Old Dec 1st, 2012, 04:19 PM
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Excessive pressure from the DPF? Are they suggesting it's blocked which is causing some power loss?

How many km's on the car?
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  #17 (permalink)  
Old Dec 1st, 2012, 05:39 PM
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The car has 58k miles on it and are saying the excessive back pressue is from dpf
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  #18 (permalink)  
Old Dec 4th, 2012, 06:20 AM
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Any idea how they are detecting that?
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  #19 (permalink)  
Old Dec 4th, 2012, 02:56 PM
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With their diagnostic machine
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  #20 (permalink)  
Old Dec 4th, 2012, 03:32 PM
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hi am glad your getting somewhere, it is frustrating that bmw mini have mapped these diesels in such a Poor way to chase lower co2 readings. I boxed mine and have been testing the settings, having gone through five settings i have found a setting which almost 95% has taken the flat spot out. I will check the orange seal next. Hope you get it sorted ;-).

Last edited by Dixy72; Dec 4th, 2012 at 03:33 PM. Reason: typo
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  #21 (permalink)  
Old Dec 5th, 2012, 07:32 AM
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Quote: Originally Posted by Benlg81 (original)
With their diagnostic machine

Hmmm. I'm going to have to have a little chat with the Stealers. They're simply driving the car around and telling me everything is okay.

I have a suspicious feeling I am not getting the most technologically advanced diagnosis.
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  #22 (permalink)  
Old Dec 5th, 2012, 07:39 AM
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Where are you based minidelux? It's worth the visit to will at p torque
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  #23 (permalink)  
Old Dec 6th, 2012, 08:31 AM
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Quote: Originally Posted by Benlg81 (original)
Where are you based minidelux? It's worth the visit to will at p torque

I'm living in Luxembourg (the small country in the middle of Europe).
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  #24 (permalink)  
Old Dec 6th, 2012, 09:46 AM
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I see, shame p torque were very good.


Only had car back for 2 days and 100 miles and around town still oly getting 41.8 mpg driving like a saint.

Any ideas what else to look for? Will the orange seal make any difference?
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  #25 (permalink)  
Old Dec 7th, 2012, 07:49 PM
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I think changing it won't affect MPG but it may affect your power a little.

For fuel efficiency, basic things to check are tire pressure, air and fuel filter and (although unlikely) sticking brake pads. Prior to about 50,000km my fuel consumption wasn't good either, but it settled down after 50,000km.

You might want to check the mass airflow sensor, if it's faulty that will affect fuel consumption as will a dirty EGR valve.

What kind of tires and rims (i.e. size) have you got on the car?
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  #26 (permalink)  
Old Dec 7th, 2012, 10:26 PM
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Hi

The car has 17" run flats all pumped up to right pressure.

Air filter brand new last week

I have checked briefly for air leaks in pipes around turbo

Cleaned maf sensor last week was very clean

New orange seal to be changed next week

Ill jack up car to chek all brakes (although I have put hand near disks after drive and no extreme level of heat to indicate binding)




Where are the egr and the fuel filter?
How do you know if the car is running at the right temperture and not stuck in cold start ect?
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  #27 (permalink)  
Old Dec 8th, 2012, 06:29 AM
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The 17 inchers will lower your fuel efficiency quite dramatically even if at the right pressure. I know several people who have complained about this.

I posted a description of the EGR location here:

http://www.mini2.com/forum/mini-coop...ml#post3847468

The fuel filter is right in the same spot too.

Perhaps a photo will help...
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  #28 (permalink)  
Old Dec 9th, 2012, 08:53 AM
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hi

right then took the car on a long motorway driver yesterday.

plugged the obd2 reader into the car and had the laptop on the whole drive and it took 15-20 mins to get to 79 degrees and then stayed there the whole drive occasionally getting to 81.

i have had a look at parts suppliers and the thermostat is rated from 83 degrees.

Mini | Euro Car Parts UK?s No.1 Car Parts Retailer

could thawt mean the car is running in cold mode and over fueling?

also at 2000rpm when putting your foot down there was a lot of white/grey smoke being kicked out the back

for the 120 mile drive at a steady 75-80mph it still only rasied the mpg counter to 44.6

any ideas?

Update.... Just done another 120 mile motorway drive and its pushed the past tank and a half average to 47.7mpg which is still low I think for motorway driving

Last edited by Benlg81; Dec 9th, 2012 at 05:49 PM.
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  #29 (permalink)  
Old Dec 9th, 2012, 08:16 PM
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Just ordered new thermostat and housing and also a new fuel filter

Any ideas where the thermostat is on this 1.6 Diesel engine haven't been out to look yet
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  #30 (permalink)  
Old Dec 10th, 2012, 07:03 AM
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Quote: Originally Posted by Benlg81 (original)
Just ordered new thermostat and housing and also a new fuel filter

Any ideas where the thermostat is on this 1.6 Diesel engine haven't been out to look yet

Interesting results from the OBD scan. Unfortunately, I don't know where the thermostat is on the D.

Was the OBD indicating an error, or were you just reading the live data? I suppose 81°C isn't too far off 83°C, but I don't know the tolerances. I suspect if it was in cold mode, it might throw a code.


EDIT: I can't watch the following video, but according to the description it involves a thermostat change on a Citroen Berlingo 1.6HDi, which is the same engine as the Cooper D:



Hope that helps and that you can discern the location of the t-stat from it.

Can you confirm with the dealership?
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