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Discussion Starter · #1 ·
need to discuss a problem with my car , there is a problem – basically when you are driving gently maybe changing gear at around 2000- 2250rpm ( when the display tells you to) the car sometimes cuts the power a second or so after you have changed gear - 2nd to 3rd seems to be the worst. I noticed the problem straight away but I thought Iwould run the the car for a while to see if it improved. After nearly 3000 miles the problem seems to be getting slightly worse if anything !

It is particularly noticeable when you are going uphill as the loss of power slows you down more and results in an untidy jerk as you lose momentum then the power comes back .

It also does it in Mid and Sport modes but it is less likely to do it as you are automatically applying more throttle due to the different throttle mapping,
the problem only seems to occur when you are driving economically as you are using small throttle openings

Anyone else with a Cooper D noticed this ??
 

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I test drove Coooper D and here is my experience: the Cooper D diesel engine picks up power and torque very close to 2,000 rpm. Given that the manual transmission has "long" ratios, i.e. revs drop considerably when upshifting, changing gears around 2,000-2,250 rpm brings the engine below its power zone in the next gear leading the car to stall until revs reach 2,000 rpm again. I would try to change gears at slightly higher revs (i.e. revs that would bring the engine's revs to around 2.000 rpm in the next gear) and you shouldnt have any problem, while you should continue to enjoy economical driving.
 

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need to discuss a problem with my car , there is a problem – basically when you are driving gently maybe changing gear at around 2000- 2250rpm ( when the display tells you to) the car sometimes cuts the power a second or so after you have changed gear - 2nd to 3rd seems to be the worst. I noticed the problem straight away but I thought Iwould run the the car for a while to see if it improved. After nearly 3000 miles the problem seems to be getting slightly worse if anything !

It is particularly noticeable when you are going uphill as the loss of power slows you down more and results in an untidy jerk as you lose momentum then the power comes back .

It also does it in Mid and Sport modes but it is less likely to do it as you are automatically applying more throttle due to the different throttle mapping,
the problem only seems to occur when you are driving economically as you are using small throttle openings

Anyone else with a Cooper D noticed this ??
Take it back to service and ask them to sit with you on a drive - at that point they will be able to see if something is wrong - do another thing - find another D at another dealership and go in for a test drive and see what happens...
 

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Discussion Starter · #4 ·
Good Idea !

I have just emailed the dealer this morning and explained the problem so I am waiting to see what they say, I definitely will be showing them the problem . Although it's the sort of thing that you need to be driving the car to appreciate what is going on.

Even if the dealer car does the same thing -its not right !

It's spoiling the enjoyment of the car as it's so smooth otherwise , then the hiccup occurs making you look like a learner driver!
 

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Good Idea !

I have just emailed the dealer this morning and explained the problem so I am waiting to see what they say, I definitely will be showing them the problem . Although it's the sort of thing that you need to be driving the car to appreciate what is going on.

Even if the dealer car does the same thing -its not right !

It's spoiling the enjoyment of the car as it's so smooth otherwise , then the hiccup occurs making you look like a learner driver!
I wouldn't personally get involved with the dealer - here in Worcester I've got two excellent guys at service Dave and Tom and if I ever have a problem with the wifes Mini they are always there to help. I think it's best to check out with service what exactly is going on and then escalate it because at least if you have others who can tell your problem then it is easier to carry on from that point - that's just experience talking - but good luck - and now that you have emailed make a phone call and tell them that you are not safe in the car because you feel it's not responding to you as it should which makes it dangerous on the road - you can't second guess something which isn't working as it should!
 

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need to discuss a problem with my car , there is a problem – basically when you are driving gently maybe changing gear at around 2000- 2250rpm ( when the display tells you to) the car sometimes cuts the power a second or so after you have changed gear - 2nd to 3rd seems to be the worst. I noticed the problem straight away but I thought Iwould run the the car for a while to see if it improved. After nearly 3000 miles the problem seems to be getting slightly worse if anything !

It is particularly noticeable when you are going uphill as the loss of power slows you down more and results in an untidy jerk as you lose momentum then the power comes back .

It also does it in Mid and Sport modes but it is less likely to do it as you are automatically applying more throttle due to the different throttle mapping,
the problem only seems to occur when you are driving economically as you are using small throttle openings

Anyone else with a Cooper D noticed this ??
My Cooper D is definitely NOT showing the same issues... if it did - I'd go straight back to the dealer! In fact, I'm bound to say that this little 3-pot diesel engine is impressing me more every day. Good luck, I'm sure you'll find a solution soon.
 

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Discussion Starter · #7 ·
I test drove Coooper D and here is my experience: the Cooper D diesel engine picks up power and torque very close to 2,000 rpm. Given that the manual transmission has "long" ratios, i.e. revs drop considerably when upshifting, changing gears around 2,000-2,250 rpm brings the engine below its power zone in the next gear leading the car to stall until revs reach 2,000 rpm again. I would try to change gears at slightly higher revs (i.e. revs that would bring the engine's revs to around 2.000 rpm in the next gear) and you shouldnt have any problem, while you should continue to enjoy economical driving.
The above scenario is when it is worse but it does do it at higher rpms too. I pulled off up a steep hill at the weekend probably up to about 3500rpm in first once 2nd gear was engaged it started to pull then the power dropped off then came back quite suddenly. It only does it for a brief second or so but it is very irritating. It never does it any other time except just after a gear change. The quicker you try to change gear the more it seems to do it
 

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The above scenario is when it is worse but it does do it at higher rpms too. I pulled off up a steep hill at the weekend probably up to about 3500rpm in first once 2nd gear was engaged it started to pull then the power dropped off then came back quite suddenly. It only does it for a brief second or so but it is very irritating. It never does it any other time except just after a gear change. The quicker you try to change gear the more it seems to do it
I've had the same experience a 3 times! :( :(
furthermore found that:
imagine you going in 3 gear, you put your foot on the clutch, foot on the brake to reduce the rotation even with the foot on the bottom clutch rises! It just happens to reduce and foot on brake. :( :(
I go on holiday but once again the car will be examined by these two situations:
1: Loss of power (it seems there is a cut in fuel)
2: Increase rotation with foot on the clutch and breaking.

:| :| :|
 

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I notice this in my Cooper D as well occasionally ... it seems to happen when the revs are a bit too low - my own fault really.
 

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In this review (in spanish)

http://www.arpem.com/mini/mini/pruebas/prueba-mini-cooper.html

Say:
Una particularidad del cambio de marchas del Mini es la función electrónica por la cual da un pequeño acelerón al motor al reducir de marcha. Se evitan así brusquedades al realizar esta maniobra pero lo hace de un modo tan sutil que llega a pasar desapercibido para los conductores más experimentados. Esta función no es una novedad absoluta en el mundo del automóvil puesto que ya la habían adoptado el Nissan 370 Z y el Porsche 911.

A particularity of the gear change of the Mini is the electronic function for which it gives a small burst of speed to the engine on having reduced of march. Abruptness like that is avoided on having realized this maneuver but it does it in a way so subtle that manages to go unnoticed for the most experienced drivers. This function is not an absolute innovation in the world of the car since already she had been adopted by the Nissan 370 Z and the Porsche 911.
 

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Discussion Starter · #11 ·
Hi All ,

just wanted to let you know that the car has done over 10,000 miles now and the same problem remains , I didn't want to take it to the dealer so early in its life so I have run it for a bit to see if the problem goes away. So for those of you who don't know of the problem it is an engine hiccup/ hesitancy when getting back on the throttle after changing gear and fully engaging the clutch . Its feels like the fuel is being slightly starved then it picks up and drives normally . Some on this forum have suggested that the problem may be changing gear too early so the engine is not "in its power band" but I don't think that is the case because I am changing gear a hundred or so rpm after the gear indicator tell you to change up a gear . It does it in all modes but the effect is definitely more noticeable in green mode , and less likely to happen in mid and hardly ever in sport mode presumably because you are using a wider throttle opening (as far as the engine is concerned) in this mode . It seems to do it after very low power/light running almost as if the injectors were getting clogged , it never does it when reapplying the throttle - only after changing gear and only when driving in a sedate(economical)manner.

Will have to take it to the dealer as it is starting to grate on the nerves now.

Am I the only one on this forum to have this problem?
 

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I have noticed this problem in my Cooper D - it happens rarely but is quite disconcerting.

I haven't been able to pin down the exact sequence that causes it, but it seems to happen after changing from 2 --> 3 gear around town. I only drive in Normal mode so can't say whether it would happen in Green or Sport mode too.
 

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Discussion Starter · #13 ·
I have spoken to the service guy at my local dealer who is going to update the software which presumably updates the engine management . He has noticed the same problem on his cooper D as well , it doesn't do it a lot but it really spoils the smoothness of the driving experience and I have noticed that it definitely does it more after changing up from 2nd to 3rd . Weird .

Will report back next week after the software update
 

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Discussion Starter · #14 ·
Software has been updated now and the car is much better now, the low speed drivability was very good before (aside from the aforementioned problem) but now it is really really good, it is smoother and pulls cleanly from very low revs. It also feels slightly quicker when you rev it than it did before.

Definitely a result !

As an aside I drove an F55 cooper petrol for the day and was alittle disappointed that it did not perform any better than my F56 cooper D. It has confirmed that the diesel engine is as smooth and quiet as the petrol but about 15 mpg better on my daily commute.
 

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Wow that's great news. I will try a diesel one of these days. Have never liked them due the sound of them and the small rev range but if they are as good as you say will give it a go.
 
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