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: 08:49 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: 08:49 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: 194
Local Time: 08:49 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: 08:49 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: 10:49 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: 08:49 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
How much do you pay in insurance?
Jul 24th, 2010 03:01 PM
Last post by bennyjs123
Today 06:46 AM
81 Replies, 28,133 Views
Strange noise after dealer ecu (dme) flash
Aug 25th, 2013 10:56 PM
Last post by Wirthmo
Today 03:32 AM
1 Replies, 934 Views
New Feature Validation Project
Today 03:02 AM
by ATak623
Last post by ATak623
Today 03:02 AM
0 Replies, 60 Views
Mini Monstah Night
Today 02:24 AM
Last post by auburnmarie
Today 02:24 AM
0 Replies, 54 Views
automatic transmission fix
Today 01:45 AM
Last post by pforbes54
Today 01:45 AM
0 Replies, 59 Views
ClubMINI QLD Cafe Run 27 July
Yesterday 11:12 PM
by mowog
Last post by mowog
Yesterday 11:12 PM
0 Replies, 68 Views
Harman Kardon Stopped working!!!!
Aug 15th, 2009 04:53 PM
Last post by jimb2469
Yesterday 10:59 PM
20 Replies, 1,328 Views
Pre-Road Trip Tips please!
Jul 21st, 2014 10:49 PM
Last post by mab01uk
Yesterday 10:48 PM
1 Replies, 448 Views
r56 springs
Jul 9th, 2014 08:48 PM
Last post by SteveM3
Yesterday 08:29 PM
1 Replies, 262 Views
Tyre pressure warning light
Jul 15th, 2014 10:16 AM
Last post by steamraiser2
Yesterday 07:52 PM
4 Replies, 523 Views
Countryman one petrol needs more power!
Yesterday 07:51 PM
Last post by Warriorbez
Yesterday 07:51 PM
0 Replies, 100 Views
NAM down?
Yesterday 03:09 PM
by cristo
Last post by Angib
Yesterday 06:45 PM
1 Replies, 129 Views
Mini warranty
Yesterday 05:14 PM
Last post by BeccaRoberts04
Yesterday 05:14 PM
0 Replies, 143 Views
Tire choice for 16" alloys
Jul 21st, 2014 10:12 AM
by JDallow
Last post by Caveman
Yesterday 04:16 PM
4 Replies, 382 Views
Engine overheating problem when idle
Jul 21st, 2014 05:58 PM
Last post by k3fus
Yesterday 07:02 AM
1 Replies, 245 Views
GTI vs Cooper S True Cost to Own?
Jul 21st, 2014 03:39 AM
by hkyktms
Last post by k3fus
Yesterday 07:00 AM
2 Replies, 418 Views
Thinking of buying 2005 mini-HELP
Yesterday 01:38 AM
Last post by k3fus
Yesterday 06:57 AM
1 Replies, 239 Views
Decoding the VIN Last 7
Jul 19th, 2014 11:34 PM
by mowog
Last post by Jammyamerica
Yesterday 06:49 AM
5 Replies, 352 Views
MINI Superleggera Concept is a Modern Day Classic
May 26th, 2014 11:44 PM
Last post by Jammyamerica
Yesterday 06:29 AM
5 Replies, 1,908 Views
New Online Magazine for Track Day Enthusiasts
Apr 14th, 2014 12:56 AM
Last post by AutoTrackDay
Yesterday 01:26 AM
13 Replies, 1,911 Views
» Premium
» Auto Insurance
» Wheel & Tire Center

Powered by vBadvanced CMPS v3.2.1

All times are GMT. The time now is 07:49 AM.



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