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: 10:26 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: 10:26 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: 10:26 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: 10:26 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: 12:26 PM
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: 10:26 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
small business merchant account
Today 08:26 AM
by colnpwl
Last post by colnpwl
Today 08:26 AM
0 Replies, 12 Views
Help, is this a cooper S??
Yesterday 09:29 PM
by markdm
Last post by markdm
Today 01:29 AM
6 Replies, 158 Views
Cooper S Engine Rebuild
Yesterday 07:44 AM
Last post by marque
Yesterday 11:49 PM
1 Replies, 132 Views
Does your Mini have a name?
Mar 25th, 2014 10:00 PM
Last post by Grumpee1
Yesterday 11:29 PM
18 Replies, 1,084 Views
O2 sensors in exhaust
Yesterday 06:03 PM
Last post by marque
Yesterday 11:24 PM
1 Replies, 93 Views
Mini Cooper S R56 Timing Chain Tensioner
Feb 24th, 2013 11:53 AM
Last post by MCMULC
Yesterday 09:08 PM
9 Replies, 6,677 Views
Just bought mini what extras do I need to tell insurance about
Mar 19th, 2014 03:51 PM
Last post by JohnnyC
Yesterday 07:43 PM
7 Replies, 618 Views
should I wait or not?
Apr 14th, 2014 12:07 AM
Last post by mab01uk
Yesterday 07:10 PM
7 Replies, 443 Views
Constant problems with my R50. Should I keep it or replace? Need advice please
Apr 3rd, 2014 03:52 PM
by kteara
Last post by mab01uk
Yesterday 07:03 PM
14 Replies, 954 Views
Spare wheel 55 plate cooper
Yesterday 01:32 PM
by ajn
Last post by mab01uk
Yesterday 07:00 PM
2 Replies, 96 Views
Need new rims, any ideas
Apr 8th, 2014 10:14 PM
Last post by CoolioMcPimp
Yesterday 06:44 PM
3 Replies, 312 Views
Cup holder inserts
Yesterday 06:23 PM
Last post by Captain5691
Yesterday 06:23 PM
0 Replies, 82 Views
Electrical Issues with 2003 Cooper base
Mar 10th, 2014 07:09 PM
Last post by The Nun
Yesterday 05:29 PM
3 Replies, 461 Views
Strange Braking Noise
Jan 28th, 2014 08:27 PM
Last post by The Nun
Yesterday 05:22 PM
8 Replies, 972 Views
R52 A pillar interior trim removal
Yesterday 08:11 AM
Last post by clockworks
Yesterday 02:57 PM
2 Replies, 93 Views
Boot switch not working
Mar 8th, 2014 10:23 AM
Last post by burnstar
Yesterday 11:04 AM
4 Replies, 416 Views
Attention to Detail (UK) - spot the difference!
Yesterday 09:43 AM
by sailesh
Last post by burnstar
Yesterday 10:47 AM
1 Replies, 148 Views
Changing Oil????
Mar 3rd, 2014 12:32 PM
Last post by habi222
Yesterday 09:31 AM
8 Replies, 755 Views
Mini Cooper S Rebuild
Yesterday 07:49 AM
Last post by budgie2014
Yesterday 07:49 AM
0 Replies, 108 Views
Engine mounts
Dec 22nd, 2013 07:47 PM
Last post by johnnycatbiscuit
Yesterday 04:21 AM
3 Replies, 811 Views
» Premium
» Auto Insurance
Ľ Wheel & Tire Center

Powered by vBadvanced CMPS v3.2.1

All times are GMT. The time now is 09:26 AM.



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