MINI2

Pauly · Jan 31st, 2005, 06:50 PM

Hi guys

Just wondered if anyone else has noticed this 'characteristic' with their MC? When I'm accelerating in 1st from a standstill, at about 2000 revs my MC behaves as if it's suddenly encountered some heavy sludge (it seems to hit some sort of resistance) and I have to really put my foot down to get her to move briskly. I always seem to get much better acceleration in 2nd. I've never noticed this with other cars I've owned...

Has anyone else noticed this or is mine unique???

Olly. · Jan 31st, 2005, 06:58 PM

Never noticed this with mine, might be worth a phone call to the dealer

mini fire · Feb 1st, 2005, 04:07 PM

Not on mine either

mini vanilli · Feb 1st, 2005, 04:48 PM

yes sometimes on mine.

ButtonIt · Feb 1st, 2005, 04:51 PM

The infamous "Stumble" problem. There's a whole heap of info on M2 about this. Sorry I can't be more specific, but if you do a search on "Stumble" or "Yo-Yo" and other key words you should find something

I was under the impression it was an ECU software issue.

What build date is your car?

Pauly · Feb 1st, 2005, 05:49 PM

Build date is April '04. However, I don't think it's the stumble problem though as it doesnt occur immediately from a standstill as if stumbling. It's only when it hits about 2000 revs the engine just seems to encounter a level of resistance that I seem to have to fight against by pushing her harder. This doesnt, for example, happen when I'm accelerating in 2nd.

I haven't experienced this with any other cars. It's just rather resistant throughout the whole rev range from 2000 upwards in 1st. It's just really frustrating. It almost feels as if someone's fitted some form of power limiter in 1st!!

dansmini · Feb 1st, 2005, 05:52 PM

I would definitely take it to the dealer and see if V39 upgrade will help/cure it. It helped mine, as it had a lag with a/c on and also intermittently would idle very low or even stall when I came to a stop with the engine cold. It hasn't had either problem since they installed V39 and that was mid December.

~Marcus~ · Feb 1st, 2005, 05:58 PM

Mine is a June 04 build and it used to have the same flat spot. Then I took it for a drive on country lanes and thrashed it, keeping the revs as high as possible. The flat spot disappeared and has not returned

Worth a go!

soopercharger · Feb 1st, 2005, 06:03 PM

Quote: Originally Posted by Pauly

Hi guys

Just wondered if anyone else has noticed this 'characteristic' with their MC? When I'm accelerating in 1st from a standstill, at about 2000 revs my MC behaves as if it's suddenly encountered some heavy sludge (it seems to hit some sort of resistance) and I have to really put my foot down to get her to move briskly. I always seem to get much better acceleration in 2nd. I've never noticed this with other cars I've owned...

Has anyone else noticed this or is mine unique???

Are you sure it isn't the traction control operating? Does it happen everytime, dry or wet?

dalboyne · Feb 1st, 2005, 06:26 PM

Quote: Originally Posted by soopercharger

Are you sure it isn't the traction control operating? Does it happen everytime, dry or wet?

Wouldn't you see the yellow light come on if the traction was operating?

soopercharger · Feb 1st, 2005, 06:31 PM

Quote: Originally Posted by dalboyne

Wouldn't you see the yellow light come on if the traction was operating?

Yes you would........?

n0uk · Feb 1st, 2005, 07:23 PM

Symptoms sound very similar to what I used to experience in my MC which is also an April '04 build.

When I took it in for the 10k service they did the ECU firmware upgrade (muttered something about petrol cap recall) and that completely eliminated the stutter.

moonpie19 · Feb 8th, 2005, 07:59 PM

I am having the same problem. When you start out you have to give more gas and get the rpm's up for it to go. The next time I get it serviced I will have them check it out.

rosco24 · Feb 9th, 2005, 10:05 PM

Had my cooper for 5 months now and going onto the M8 and went into third gear. Usually theres a good amount of power in third but it was like the car was driving through water !! And it happened in 4th and 5th !! Its not all the time this is happening. Any ideas ???

cpearce · Feb 10th, 2005, 01:48 PM

Intereting, mine did the same thing...a March 2004 MC. I ended up buying a Pilo Racing Coil pack and new plug wires...that seemed to get ride of it...
although, it makes me wonder if I need some ECU upgrade? Maybe I'll just buy the Unichip from Webbmotosports.

Jan 31st, 2005, 06:50 PM	#1
Pauly MINI2 Newbie Join Date: Feb 2004 Local Time: 08:36 PM Posts: 25 Offline	Initial engine lag in 1st?? Hi guys Just wondered if anyone else has noticed this 'characteristic' with their MC? When I'm accelerating in 1st from a standstill, at about 2000 revs my MC behaves as if it's suddenly encountered some heavy sludge (it seems to hit some sort of resistance) and I have to really put my foot down to get her to move briskly. I always seem to get much better acceleration in 2nd. I've never noticed this with other cars I've owned... Has anyone else noticed this or is mine unique???

Feb 1st, 2005, 04:51 PM	#5 (permalink)
ButtonIt The Disorganiser My Classifieds Join Date: Jul 2003 Location: Waiting for others Local Time: 09:36 PM Posts: 15,546 Offline	The infamous "Stumble" problem. There's a whole heap of info on M2 about this. Sorry I can't be more specific, but if you do a search on "Stumble" or "Yo-Yo" and other key words you should find something I was under the impression it was an ECU software issue. What build date is your car? Sponsor our Rickshaw team, please click here for info

Feb 1st, 2005, 05:58 PM	#8 (permalink)
~Marcus~ No JCW for me :o( Join Date: Feb 2004 Location: London & Hampshire Local Time: 09:36 PM Posts: 1,953 Offline	Mine is a June 04 build and it used to have the same flat spot. Then I took it for a drive on country lanes and thrashed it, keeping the revs as high as possible. The flat spot disappeared and has not returned Worth a go! My Blog

Feb 1st, 2005, 07:23 PM	#12 (permalink)
n0uk MINIBrit Join Date: Mar 2004 Location: EN34jv (Minneapolis) Local Time: 03:36 PM Posts: 2,178 Offline	Symptoms sound very similar to what I used to experience in my MC which is also an April '04 build. When I took it in for the 10k service they did the ECU firmware upgrade (muttered something about petrol cap recall) and that completely eliminated the stutter. Twin Cities MINI Owners

Feb 8th, 2005, 07:59 PM	#13 (permalink)
moonpie19 MINI2 Newbie Join Date: Nov 2004 Location: Ossipee, NC Local Time: 04:36 PM Posts: 38 Offline	I am having the same problem. When you start out you have to give more gas and get the rpm's up for it to go. The next time I get it serviced I will have them check it out. Rick

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Jan 31st, 2005, 06:58 PM	#2 (permalink)
Olly. Overboosting..... Join Date: Sep 2003 Local Time: 09:36 PM Posts: 3,492 Offline	Never noticed this with mine, might be worth a phone call to the dealer

Feb 1st, 2005, 04:07 PM	#3 (permalink)
mini fire MINI2 Newbie Join Date: Jan 2005 Location: Rochester Local Time: 08:36 PM Posts: 29 Offline	Not on mine either

Feb 1st, 2005, 04:48 PM	#4 (permalink)
mini vanilli MINI2 Regular Join Date: Dec 2004 Local Time: 03:36 PM Posts: 158 Offline	yes sometimes on mine.

Feb 1st, 2005, 05:49 PM	#6 (permalink)
Pauly MINI2 Newbie Join Date: Feb 2004 Local Time: 08:36 PM Posts: 25 Offline	Build date is April '04. However, I don't think it's the stumble problem though as it doesnt occur immediately from a standstill as if stumbling. It's only when it hits about 2000 revs the engine just seems to encounter a level of resistance that I seem to have to fight against by pushing her harder. This doesnt, for example, happen when I'm accelerating in 2nd. I haven't experienced this with any other cars. It's just rather resistant throughout the whole rev range from 2000 upwards in 1st. It's just really frustrating. It almost feels as if someone's fitted some form of power limiter in 1st!!

Feb 1st, 2005, 05:52 PM	#7 (permalink)
dansmini Sullivan Racing Join Date: Sep 2003 Location: Ohio Local Time: 04:36 PM Posts: 1,138 Offline	I would definitely take it to the dealer and see if V39 upgrade will help/cure it. It helped mine, as it had a lag with a/c on and also intermittently would idle very low or even stall when I came to a stop with the engine cold. It hasn't had either problem since they installed V39 and that was mid December.

Feb 1st, 2005, 06:03 PM	#9 (permalink)
soopercharger V8Bruiser Join Date: Apr 2004 Local Time: 09:36 PM Posts: 30 Offline	Quote: Originally Posted by Pauly Hi guys Just wondered if anyone else has noticed this 'characteristic' with their MC? When I'm accelerating in 1st from a standstill, at about 2000 revs my MC behaves as if it's suddenly encountered some heavy sludge (it seems to hit some sort of resistance) and I have to really put my foot down to get her to move briskly. I always seem to get much better acceleration in 2nd. I've never noticed this with other cars I've owned... Has anyone else noticed this or is mine unique??? Are you sure it isn't the traction control operating? Does it happen everytime, dry or wet?

Feb 1st, 2005, 06:26 PM	#10 (permalink)
dalboyne Impatient for R57! My Classifieds Join Date: Jan 2003 Location: Luxembourg Local Time: 10:36 PM Posts: 1,635 Offline	Quote: Originally Posted by soopercharger Are you sure it isn't the traction control operating? Does it happen everytime, dry or wet? Wouldn't you see the yellow light come on if the traction was operating?

Feb 1st, 2005, 06:31 PM	#11 (permalink)
soopercharger V8Bruiser Join Date: Apr 2004 Local Time: 09:36 PM Posts: 30 Offline	Quote: Originally Posted by dalboyne Wouldn't you see the yellow light come on if the traction was operating? Yes you would........?

Feb 9th, 2005, 10:05 PM	#14 (permalink)
rosco24 MINI2 Newbie Join Date: Dec 2004 Location: Glasgow Local Time: 09:36 PM Posts: 28 Offline	Had my cooper for 5 months now and going onto the M8 and went into third gear. Usually theres a good amount of power in third but it was like the car was driving through water !! And it happened in 4th and 5th !! Its not all the time this is happening. Any ideas ???

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Feb 10th, 2005, 01:48 PM	#15 (permalink)
cpearce Texas Spike Join Date: Sep 2004 Location: Austin, Texas Local Time: 02:36 PM Posts: 72 Offline	Intereting, mine did the same thing...a March 2004 MC. I ended up buying a Pilo Racing Coil pack and new plug wires...that seemed to get ride of it... although, it makes me wonder if I need some ECU upgrade? Maybe I'll just buy the Unichip from Webbmotosports.

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