2003 R50 Cooper - Off Idle Misfires & Hesitation [FIXED - Coil pack failing] - MINI Cooper Forum
Go Back   MINI Cooper Forum > MINI Technical Forums > MINI Faults & Fixes > First Generation Faults & Fixes


First Generation Faults & Fixes MINI faults and fixes 2001 - 2006

Mini2.com is the premier Mini Cooper Forum on the internet. Registered Users do not see the above ads.
Reply
Similar Threads
Thread Thread Starter Forum Replies Last Post
2009 Cooper S engine problems (misfires and hesitating) JCWcooper Second Generation Faults & Fixes 13 May 6th, 2012 09:34 PM
2003 cooper (R50) wing mirror covers-HELP mini*beth First Generation MINI Exterior 1 Sep 17th, 2010 03:10 PM
Mini Cooper 2003 Hesitation/Misfire mgfreak79 First Generation Faults & Fixes 15 Mar 8th, 2010 05:49 PM
K&N 57i or Typhoon for a 2003 Cooper matt21 First Generation MINI Tuning 12 May 7th, 2005 07:46 PM
Off Idle Hesitation e william First Generation MINI Tuning 4 Aug 4th, 2003 11:09 AM

 
LinkBack Thread Tools Rate Thread
  #1 (permalink)  
Old Sep 29th, 2010, 08:12 AM
MINI2 Newbie
Offline
 
Join Date: Oct 2006
Location: UK
Posts: 6
Local Time: 04:57 AM
United Kingdom Male
Green Cooper 2003 R50 Cooper - Off Idle Misfires & Hesitation [FIXED - Coil pack failing]

Hi all

I've have a problem with my 2003 MINI Cooper that's causing it to hesitate and misfire. I've had a good search through the forums but can't find any posts that match my symptoms exactly...

I'm getting an odd hesitation/misfire at low revs when the engine is under load. It's most noticable when pulling away in 1st - unless I'm really really gentle, the car seems to die for a fraction of a second as the car begins to move. I also notice it if I'm rolling along in traffic in 2nd with the engine at about 1000 - 1250 RPM - It's fine as long as I balance the throttle and keep the speed constant, but as soon as I put my foot down to speed up, there are multiple misfires until I get to about 1750 RPM when it seems to clear.

I can make the misfire happen on demand by going up a hill at 10mph, putting the car in 5th with the engine at around 1250 RPM. If I go full throttle the car will miss and hesitate all the way up to 1750 RPM.

The car has around 95k miles on it. It's just had a new set of plugs as part of an Inspection 2 but this hasn't cured the problem.

Has anyone else had a similar problem and cured it? It's driving me crazy and making me look like a 1st year driver at roundabouts and at the lights!

Cheers
Mark

Last edited by markius; Oct 14th, 2010 at 10:42 PM.
Reply With Quote
Sponsored Links
Advertisement
 
  #2 (permalink)  
Old Oct 1st, 2010, 03:58 PM
MINI2 Newbie
Offline
 
Join Date: Oct 2006
Location: UK
Posts: 6
Local Time: 04:57 AM
United Kingdom Male
Bump!

Just to add, although I said "misfire", nothing shows up in the ECU.

I actually think it's got worse since the new plugs went in

Can anyone help?
Reply With Quote
  #3 (permalink)  
Old Oct 1st, 2010, 05:04 PM
MINI2 Regular
Offline
 
Join Date: Aug 2008
Location: South West
Posts: 187
Local Time: 04:57 AM
United Kingdom Male View Silverado's Pure Silver & Body Color 1st Gen MINI One Profile
Have a look at this thread:

http://www.mini2.com/forum/first-gen...2-misfire.html

I would initially think about a compression test on the cylinders.
Reply With Quote
  #4 (permalink)  
Old Oct 3rd, 2010, 08:23 PM
MINI2 Newbie
Offline
 
Join Date: Oct 2006
Location: UK
Posts: 6
Local Time: 04:57 AM
United Kingdom Male
Hi Silverado

I had seen that (very scary) thread but I'd discounted the possibility of something as serious as a burnt valve because the EML has stayed off and nothing has shown up in the ECU log. Also the car idles smoothly...

I think it would be good to eliminate something that serious though so I'll get hold of a guage and report back.

Someone has also suggested that it may be a small vacuum leak somewhere. Do you have any tips on the best way to track one of those down? With the engine bay being so tight, it's quite hard to get to all of the induction system.

I'm not a mechanic but I'm willing to learn!

Mark
Reply With Quote
  #5 (permalink)  
Old Oct 5th, 2010, 02:30 PM
MINI2 Newbie
Offline
 
Join Date: Mar 2009
Posts: 11
Local Time: 06:57 AM
Namibia View daxwert's Classified Ads
I would have my fuelpump checked. Had a similar problem for a few months and also went into checking everything. look for an audi A4 (B6) pump, might be cheaper then the original mini.
Reply With Quote
  #6 (permalink)  
Old Oct 14th, 2010, 10:41 PM
MINI2 Newbie
Offline
 
Join Date: Oct 2006
Location: UK
Posts: 6
Local Time: 04:57 AM
United Kingdom Male
DIY

This turned out to be a failing coil pack.

Ordered a 2011 JCW today... not too many more first generation faults and fixes for me
Reply With Quote
Sponsored Links
Advertisement
 
Reply
Tags: , , ,



Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Rate This Thread
Rate This Thread:

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

Similar Threads
Thread Thread Starter Forum Replies Last Post
2009 Cooper S engine problems (misfires and hesitating) JCWcooper Second Generation Faults & Fixes 13 May 6th, 2012 09:34 PM
2003 cooper (R50) wing mirror covers-HELP mini*beth First Generation MINI Exterior 1 Sep 17th, 2010 03:10 PM
Mini Cooper 2003 Hesitation/Misfire mgfreak79 First Generation Faults & Fixes 15 Mar 8th, 2010 05:49 PM
K&N 57i or Typhoon for a 2003 Cooper matt21 First Generation MINI Tuning 12 May 7th, 2005 07:46 PM
Off Idle Hesitation e william First Generation MINI Tuning 4 Aug 4th, 2003 11:09 AM

» Recent Threads
R57 Raio not turning on with ignition
Today 03:18 AM
by 7nut
Last post by 7nut
Today 03:18 AM
0 Replies, 22 Views
Help, is this a cooper S??
Apr 18th, 2014 09:29 PM
by markdm
Last post by 1990crx
Today 01:40 AM
7 Replies, 322 Views
Does your Mini have a name?
Mar 25th, 2014 10:00 PM
Last post by avflinsch
Yesterday 11:43 PM
34 Replies, 1,753 Views
Offically The World's Quickest & Fastest MINI
Mar 4th, 2014 10:50 PM
by mab01uk
Last post by mab01uk
Yesterday 11:01 PM
7 Replies, 1,120 Views
Is Mini not good for long trips?
Yesterday 12:58 PM
Last post by mab01uk
Yesterday 10:51 PM
6 Replies, 222 Views
Tow Hitch for '13 Roadster
Feb 17th, 2014 05:56 AM
Last post by Mid Life Mini
Yesterday 09:22 PM
6 Replies, 510 Views
Tunning a mini cooper Saround ESSEX??
Yesterday 09:04 PM
Last post by johnd-mkiv
Yesterday 09:04 PM
0 Replies, 67 Views
Fuel Guage stopped working
Mar 17th, 2009 10:26 PM
by SRRAE
Last post by phong13
Yesterday 08:45 PM
1 Replies, 406 Views
Wanna! Watch Neighbors Movie 2014 Online
Yesterday 05:30 PM
Last post by johnpogue2014
Yesterday 05:30 PM
0 Replies, 72 Views
R53 GPS and Head Unit qs.
Yesterday 01:17 PM
Last post by heathwebbo
Yesterday 05:23 PM
1 Replies, 119 Views
R56 cooper S wheel speed sensor fault - need genuine mini part?
Yesterday 05:19 PM
by DanN92
Last post by DanN92
Yesterday 05:19 PM
0 Replies, 104 Views
Cooper R50 rally lamp/fog light bulb type?
Yesterday 12:04 PM
Last post by Challinor
Yesterday 04:46 PM
2 Replies, 120 Views
Low quality lounge leather? Retro better?
Yesterday 04:11 PM
by rvt50
Last post by rvt50
Yesterday 04:11 PM
0 Replies, 128 Views
Mini ONE 2006 Head Unit, Harman Kardon, Sat Nav??
Yesterday 02:53 PM
by gumbsy1
Last post by gumbsy1
Yesterday 03:03 PM
1 Replies, 129 Views
Radio CD Player Spare Part
Apr 17th, 2014 10:47 AM
by B20A
Last post by gumbsy1
Yesterday 02:56 PM
2 Replies, 189 Views
Mini Cooper R56 Radio Problem
Apr 1st, 2013 05:38 PM
Last post by gm_MiniCoopsta
Yesterday 01:45 PM
1 Replies, 1,072 Views
should I wait or not?
Apr 14th, 2014 12:07 AM
Last post by CoolioMcPimp
Yesterday 01:37 PM
9 Replies, 666 Views
Help with fault codes!
Oct 17th, 2008 06:38 PM
Last post by sepiareverb
Yesterday 01:12 PM
7 Replies, 28,787 Views
Car seat for toddler
Aug 6th, 2011 07:59 PM
Last post by habi222
Yesterday 12:02 PM
3 Replies, 3,910 Views
» Premium
» Auto Insurance
Wheel & Tire Center

Powered by vBadvanced CMPS v3.2.1

All times are GMT. The time now is 03:57 AM.



Powered by vBulletin® Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
SEO by vBSEO 3.3.2