Poor perfomance at low engine speed - MINI Cooper Forum

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post #1 of 6 (permalink) Old Jun 10th, 2019, 10:57 AM Thread Starter
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Poor perfomance at low engine speed

Hi guys,

I have a problem with my "new" MINI Cooper Diesel ALL4 Countryman 1.6 manual 2012.

When the engine speed is <2000 rpm the performance of the engine is very poor.

During the hill start, I can't run slow, the engine seems doesn't have the strength to push my car when the rpm is <2000.

To make a hill start I need to use a lot the clutch (with classical stink).

When the hill is heavy it is a problem.

What do you think about it?

Thanks

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post #2 of 6 (permalink) Old Jun 10th, 2019, 12:23 PM
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Quote:
Originally Posted by mycoo View Post
Hi guys,

I have a problem with my "new" MINI Cooper Diesel ALL4 Countryman 1.6 manual 2012.

When the engine speed is <2000 rpm the performance of the engine is very poor.

During the hill start, I can't run slow, the engine seems doesn't have the strength to push my car when the rpm is <2000.

To make a hill start I need to use a lot the clutch (with classical stink).

When the hill is heavy it is a problem.

What do you think about it?

Thanks
any of the below
egr valve suck partially open enough to bleed off boost from turbo but not enough to throw a eml lights,
timing chain stretched running all wrong from if,very common
turbo vnt sticking,
fuel system problem
most common on those n47 diesels aroun 70-100k is the timing chain, but egr valve runs right up there, and dpf filter semi blocked if car is over 75000 miles on it filter that would be my first job replace or professionally cleaned out, you will need a diagnostic run to first off read whats doing what with egr and dpf filter etc then if or egr both need to be programmed in the ecu on the car, autocom cdp plus will do that look on ebay 35 ish well worth the coins, cannont even begin to know what is doing what without it,
i would get it fixed pretty soon as clutch will not take that kind of beating for long, if clutch does fail only a fool would not change the timing chain while gearbox or engine is out on anything past 50k as its a massive job on them and its their weakness timing chains,


Albert Einstein: The definition of insanity is doing the same thing over and over and expecting different results.
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post #3 of 6 (permalink) Old Jun 10th, 2019, 01:05 PM Thread Starter
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Quote:
Originally Posted by mike1967 View Post
any of the below
egr valve suck partially open enough to bleed off boost from turbo but not enough to throw a eml lights,
timing chain stretched running all wrong from if,very common
turbo vnt sticking,
fuel system problem
most common on those n47 diesels aroun 70-100k is the timing chain, but egr valve runs right up there, and dpf filter semi blocked if car is over 75000 miles on it filter that would be my first job replace or professionally cleaned out, you will need a diagnostic run to first off read whats doing what with egr and dpf filter etc then if or egr both need to be programmed in the ecu on the car, autocom cdp plus will do that look on ebay 35 ish well worth the coins, cannont even begin to know what is doing what without it,
i would get it fixed pretty soon as clutch will not take that kind of beating for long, if clutch does fail only a fool would not change the timing chain while gearbox or engine is out on anything past 50k as its a massive job on them and its their weakness timing chains,
many thanks for your reply.

My car has 53000 miles.

I orders a OBD2 Bluetooth 4.0, Kimood 2018 yesterday on Amazon and tomorrow I will get it. The autocom cdp plus will be better? I can order it.

Maybe could be the dpf. The radiator fan is running when I turn off my car 80% of the time.

I hope I can fix this problem.
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post #4 of 6 (permalink) Old Jun 10th, 2019, 03:33 PM
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Quote:
Originally Posted by mycoo View Post
many thanks for your reply.

My car has 53000 miles.

I orders a OBD2 Bluetooth 4.0, Kimood 2018 yesterday on Amazon and tomorrow I will get it. The autocom cdp plus will be better? I can order it.

Maybe could be the dpf. The radiator fan is running when I turn off my car 80% of the time.

I hope I can fix this problem.
fact fan running it tells me there are faults logged in ecu normally, P-codes are dealer only not many diagnostics will read these as dealer only, the autocom will for sure and will allow you to do live date runs and read dpf filter and turbo boost and egr valve ie if working also will show percentage or how much soot is in it, will also allow forced regen of filter. if no codes then will be dpf half blocked and car is trying to force a regen more likely, but before you go take it for a 20 miles at 3k and over revs run you need to know its not anything else as could damage the engine by forcing a regen on say a car with other issues,,
below link is for a autocom that has the twin board on it ie full function, as some have cheaper models that do half the jobs ie wont write data and encode things,
https://www.ebay.co.uk/itm/Bluetooth...69729611752b4e

Albert Einstein: The definition of insanity is doing the same thing over and over and expecting different results.
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post #5 of 6 (permalink) Old Jun 12th, 2019, 12:47 PM Thread Starter
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Update:

Next Monday I will go to the repair shop. Based on the "sound" suggestion of my mechanic could be the VNT of the turbo. Hi will perform a complete ecu diagnosis and I will let you know.

The previous owner did not change the air filter for a long time. Two weeks ago I made complete services and the air filter was full of dust. Maybe this could be a problem for the turbo.

Thanks
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post #6 of 6 (permalink) Old Jun 12th, 2019, 01:33 PM
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Quote:
Originally Posted by mycoo View Post
Update:

Next Monday I will go to the repair shop. Based on the "sound" suggestion of my mechanic could be the VNT of the turbo. Hi will perform a complete ecu diagnosis and I will let you know.

The previous owner did not change the air filter for a long time. Two weeks ago I made complete services and the air filter was full of dust. Maybe this could be a problem for the turbo.

Thanks
get him to check dpf filter pressures pre and post he will know what that means as blocked dpf from short journeys will make it feel like vnt of turbo the turbo's on those are fairly good tend not to fail much before 100k, if last own failed to service car correctly then worth having chain ie timing checked as well to be on safe side

Albert Einstein: The definition of insanity is doing the same thing over and over and expecting different results.
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