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: 05:05 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: 05:05 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: 196
Local Time: 05:05 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: 05:05 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: 07:05 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: 05:05 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

» Hot Topics This Week
Naming your MINI? - (77 replies)
Power Steering Pump DIY - (53 replies)
Ok so who has ordered an F56 MCS? - (46 replies)
Stereo? - (42 replies)
Battery care - (32 replies)
» Recent Threads
What issues?
Aug 24th, 2014 05:39 AM
by ben2012
Last post by MKuRNDY
Today 03:39 AM
3 Replies, 504 Views
N14/ N18 question
Aug 21st, 2014 01:04 PM
by oz1986
Last post by MKuRNDY
Today 03:24 AM
6 Replies, 547 Views
What do you do when there is only 1 dealership in the whole state ?
Feb 25th, 2014 02:27 AM
by Monk
Last post by VennieRRueter
Today 01:19 AM
7 Replies, 1,553 Views
What sort of engine do i have ??
Yesterday 09:58 PM
Last post by Minimissionone
Yesterday 09:58 PM
0 Replies, 87 Views
Lumbar Support & Seat Comfort
Nov 1st, 2011 03:18 PM
Last post by bwillett
Yesterday 08:14 PM
6 Replies, 6,050 Views
How best to upgrade Audio on R53 Cooper S
Yesterday 03:06 PM
Last post by k3fus
Yesterday 04:43 PM
1 Replies, 145 Views
R53 Electrical issues, BCM fault or other?
Yesterday 03:04 PM
Last post by Restyle
Yesterday 04:42 PM
1 Replies, 123 Views
Forge induction kit
Yesterday 03:35 PM
Last post by kinglooy007
Yesterday 03:35 PM
0 Replies, 98 Views
need help...no instrument panel lights
Sep 13th, 2014 02:20 PM
Last post by marque
Yesterday 01:57 PM
1 Replies, 219 Views
What is this sound? R53
Sep 1st, 2014 12:04 AM
by gmb
Last post by gmb
Yesterday 12:38 PM
10 Replies, 962 Views
For Sale - Alta Cold Air intake for R56
Yesterday 10:16 AM
by Minigo
Last post by Minigo
Yesterday 10:16 AM
0 Replies, 132 Views
"06 Mini Cooper S Upgrade Advice??
Jul 9th, 2014 01:57 AM
Last post by Roadrescue11
Yesterday 04:59 AM
5 Replies, 709 Views
Violent shakes when accelerating - goes away when I let go of pedal
Sep 1st, 2014 04:49 PM
Last post by whaap
Sep 13th, 2014 11:53 PM
5 Replies, 909 Views
Space Saver Wheel and Mounting Kit Looking for a new home
Sep 13th, 2014 09:55 PM
by FATT
Last post by FATT
Sep 13th, 2014 09:55 PM
0 Replies, 185 Views
Set A Default Driving Mode On Mini Cooper D 2014?
Sep 13th, 2014 08:50 PM
Last post by dangoodwin
Sep 13th, 2014 08:50 PM
0 Replies, 210 Views
Car shuts off on start after being off for short time
Sep 13th, 2014 08:06 PM
by Jason04
Last post by Jason04
Sep 13th, 2014 08:06 PM
0 Replies, 204 Views
Timing belt intervals
Sep 11th, 2014 04:58 PM
Last post by MiniDeLux
Sep 13th, 2014 07:48 PM
1 Replies, 313 Views
Naming your MINI?
Nov 22nd, 2011 06:02 AM
by wozzauk
Last post by SeanC
Sep 13th, 2014 07:28 PM
77 Replies, 21,476 Views
The Italian Job (2003) Mini Cooper Scenes
Sep 10th, 2014 10:54 PM
by mab01uk
Last post by SeanC
Sep 13th, 2014 07:23 PM
3 Replies, 498 Views
Which tyre brand for JCW 08 plate Mini? (Non run-flat)
Sep 13th, 2014 03:06 PM
Last post by Xamylou92X
Sep 13th, 2014 03:06 PM
0 Replies, 224 Views
» Premium
» Auto Insurance
Wheel & Tire Center

Powered by vBadvanced CMPS v3.2.1

All times are GMT. The time now is 04:05 AM.



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