MINI Cooper MINI Cooper specs
 

Go Back   North American Motoring > 2nd Generation MINIs > R56 :: Hatch Talk (2007+)
Sign in using an external account
Register Forgot Password?

Welcome to North American Motoring !
Welcome to North American Motoring,

You are currently viewing our forum as a guest, which gives you limited access to view most discussions and access our other features. By joining our community, at no cost, you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features. Registration is free, fast and simple, so please join our community today!


» Latest Main Topics
Frozen Inner Tie Rod
6 Replies, 148 Views
Advertisement

Reply
 
 
 
 
Thread Tools Search this Thread
  #1  
Old 11-28-2008, 08:45 AM
smackboy1 smackboy1 is offline
3rd Gear
 
Join Date: Aug 2007
Location: Princeton, NJ
Posts: 207
Feedback Score: 0 reviews
Gallery
P0302 Cylinder 2 Misfire

The CEL/MIL light just came on and the code reads P0302 Cylinder 2 misfire. The car has about 37K miles on it. What is the significance of this? We have an appointment at the dealer next week to have it checked out.
__________________
2007 MINI Cooper S
Chili Red w/ White Roof/Mirrors
Reply With Quote
  #2  
Old 11-28-2008, 07:33 PM
Benibiker's Avatar
Benibiker Benibiker is offline
6th Gear
 
Join Date: Dec 2007
Location: Honolulu Hawaii
Posts: 2,020
Feedback Score: 0 reviews
Gallery
Maybe just a bad plug or a batch of bad fuel...
__________________

Mini Me
- 2008 Laser Blue/Black MCS - 6 sp Auto, Multi-Function Steering Wheel, Piano Blk/Anthracite, Black JCW R105 Double-Spoke 18-inch Wheels on Pirelli PZero RF
Reply With Quote
  #3  
Old 11-28-2008, 08:52 PM
Juiceman Juiceman is offline
4th Gear
 
Join Date: Jul 2008
Posts: 309
Feedback Score: 0 reviews
Gallery
What does that mean?

A P0302 code means that the the [COLOR=#009600 ! important][FONT=Verdana,sans-serif][COLOR=#009600 ! important][FONT=Verdana,sans-serif]car's [/FONT][COLOR=#009600 ! important][FONT=Verdana,sans-serif]computer[/FONT][/COLOR][/FONT][/COLOR][/COLOR] has detected that one of the engine's cylinders is not firing properly. In this case it's cylinder #2.
Symptoms

Symptoms may include:
  • the engine may be harder to start
  • the engine may stumble / stumble, and/or hesitate
  • other symptoms may also be present
Causes

A code P0302 may mean that one or more of the following has happened:Possible Solutions

If there are no symptoms, the simplest thing to do is to reset the code and see if it comes back.
If there are symptoms such as the engine is stumbling or hesitating, check all wiring and connectors that lead to the cylinders (i.e. spark plugs). Depending on how long the ignition components have been in the [COLOR=#009600 ! important][FONT=Verdana,sans-serif][COLOR=#009600 ! important][FONT=Verdana,sans-serif]car[/FONT][/FONT][/COLOR][/COLOR], it may be a good idea to replace them as part of your regular maintenance schedule. I would suggest spark plugs, spark plug wires, distributor cap, and rotor (if applicable). Otherwise, check the coils (a.k.a. coil packs). In some cases, the catalytic converter has gone bad. If you smell rotten eggs in the exhaust, your cat converter needs to be replaced. I've also heard in other cases the problems were faulty [COLOR=#009600 ! important][FONT=Verdana,sans-serif][COLOR=#009600 ! important][FONT=Verdana,sans-serif]fuel [/FONT][COLOR=#009600 ! important][FONT=Verdana,sans-serif]injectors[/FONT][/COLOR][/FONT][/COLOR][/COLOR]Click the image to open in full size.
.
Reply With Quote
  #4  
Old 11-28-2008, 08:55 PM
Juiceman Juiceman is offline
4th Gear
 
Join Date: Jul 2008
Posts: 309
Feedback Score: 0 reviews
Gallery
http://www.obd-codes.com/p0302
Reply With Quote
  #5  
Old 11-29-2008, 05:19 AM
smackboy1 smackboy1 is offline
3rd Gear
 
Join Date: Aug 2007
Location: Princeton, NJ
Posts: 207
Feedback Score: 0 reviews
Gallery
Thanks. The engine seems to be running OK. I think if 1 of 4 cylinders was out it would be very noticeable. No other symptoms apart from the CEL/MIL. It's only 1 year old so no obviously bad components either.
__________________
2007 MINI Cooper S
Chili Red w/ White Roof/Mirrors
Reply With Quote
  #6  
Old 11-29-2008, 10:01 PM
SomethingNew71's Avatar
SomethingNew71 SomethingNew71 is offline
Cole Slaw
 
Join Date: Aug 2007
Location: Charlotte, NC
Posts: 521
Feedback Score: 0 reviews
Gallery
Garage
My cars 3rd Cylinder misfired. They replaced the ignition coils and the spark plugs and the issue was resolved. Hope it gets all fixed for you!!
Reply With Quote
  #7  
Old 12-01-2008, 06:37 PM
smackboy1 smackboy1 is offline
3rd Gear
 
Join Date: Aug 2007
Location: Princeton, NJ
Posts: 207
Feedback Score: 0 reviews
Gallery
I spoke too soon. At low revs and at idle the engine is lumpy sounding. Starts and runs, but sounds rough at idle. Also there is black soot blowing out the exhaust and the occasional pop comes out the pipes. Also, it's low on oil.
__________________
2007 MINI Cooper S
Chili Red w/ White Roof/Mirrors
Reply With Quote
  #8  
Old 12-01-2008, 06:40 PM
SomethingNew71's Avatar
SomethingNew71 SomethingNew71 is offline
Cole Slaw
 
Join Date: Aug 2007
Location: Charlotte, NC
Posts: 521
Feedback Score: 0 reviews
Gallery
Garage
Quote:
Originally Posted by smackboy1 View Post
I spoke too soon. At low revs and at idle the engine is lumpy sounding. Starts and runs, but sounds rough at idle. Also there is black soot blowing out the exhaust and the occasional pop comes out the pipes. Also, it's low on oil.
Oh dear
Reply With Quote
  #9  
Old 12-01-2008, 06:42 PM
Benibiker's Avatar
Benibiker Benibiker is offline
6th Gear
 
Join Date: Dec 2007
Location: Honolulu Hawaii
Posts: 2,020
Feedback Score: 0 reviews
Gallery
You haven't taken it in yet? Who knows what kind of damage you might be doing driving around like that!
__________________

Mini Me
- 2008 Laser Blue/Black MCS - 6 sp Auto, Multi-Function Steering Wheel, Piano Blk/Anthracite, Black JCW R105 Double-Spoke 18-inch Wheels on Pirelli PZero RF
Reply With Quote
  #10  
Old 12-19-2008, 03:56 PM
smackboy1 smackboy1 is offline
3rd Gear
 
Join Date: Aug 2007
Location: Princeton, NJ
Posts: 207
Feedback Score: 0 reviews
Gallery
Let's see. Coil packs and wires are OK. Spark plugs replaced, fuel pump replaced without improvement. Leaking valve cover found. Pistons and rings are being replaced because they are all fouled with carbon. That would explain all the soot being blown out the exhaust. It's turning out to be a big mess.
__________________
2007 MINI Cooper S
Chili Red w/ White Roof/Mirrors
Reply With Quote
  #11  
Old 12-20-2008, 02:37 PM
S325MINI's Avatar
S325MINI S325MINI is offline
1st Gear
 
Join Date: May 2007
Location: SF Bay Area
Posts: 45
Feedback Score: 0 reviews
Gallery
Sounds like what's happening to my 2007 S auto with 23k miles. Currently at the dealer for past 6 days no. They plan to keep it until at least wed, the 24th. I never got a specific message code, just the yellow check engine light turning on. They said it was the 4th cylinder misfiring due to excessive carbon buildup. I was getting very rough start and idle. I never noticed if soot was coming out my exhaust, but I never checked either. Dealer said they took it apart and cleaned it out and said no other issues, blaming bad gas, which is a lame excuse.
__________________
07 MCS Auto
LiB/W w/ Bonnet stripes, DSC, MFSW, Auto A/C, Checker cloth seats, PacBlue Color Line, 16" S-Winders. Arrived 5/17/07. Approaching 30k miles.

Reply With Quote
  #12  
Old 01-24-2009, 04:00 PM
Performance Angst Performance Angst is offline
4th Gear
 
Join Date: Apr 2007
Posts: 324
Feedback Score: 0 reviews
Gallery
Is there any way to view stored trouble codes without using a scanner?
Reply With Quote
  #13  
Old 01-24-2009, 06:46 PM
Dr Obnxs's Avatar
Dr Obnxs Dr Obnxs is offline
Vendor
 
Join Date: Sep 2004
Location: Woodside, CA
Posts: 10,352
Feedback Score: 7 reviews
Gallery
Short of digital clairvoyance....

no.... Really, anyone with a modern car should just bite the bullet and get a scanner. Get one that does the 4 older interfaces as well as CAN, and get one that can read freeze frame data. This is how you know what the car was doing when the code was thrown (speed, RPM, engine load and odometer reading).

In short, the ECU light is just telling you that the cars brain has something to say. To find out what it wants to tell you, you have to get something that speaks the "language"....

Sure the tools go for $50 to a couple hundred.... But when you think about what cars cost, and what an incorrect repair wastes, it's cheap to get a scanner, and they last a long, long time....

Matt
__________________
FES Auto= Worlds Best Shiftlight-Ian Cull Auto-Up-Auto Sportplus - R52 Top Commander
but wait, there's more! InvisiLens - Bav Tech SW - High Current Relay Module-
'02 CR/W S, Bunch of fun mods... '08 NFR/S Clubbie, close to bone-stock...
Dr Obnxs' Musings: a blog about cars, energy, technology and more....
Reply With Quote
  #14  
Old 01-25-2009, 07:16 AM
Performance Angst Performance Angst is offline
4th Gear
 
Join Date: Apr 2007
Posts: 324
Feedback Score: 0 reviews
Gallery
Quote:
Originally Posted by Dr Obnxs View Post
no.... Really, anyone with a modern car should just bite the bullet and get a scanner. Get one that does the 4 older interfaces as well as CAN, and get one that can read freeze frame data. This is how you know what the car was doing when the code was thrown (speed, RPM, engine load and odometer reading).

In short, the ECU light is just telling you that the cars brain has something to say. To find out what it wants to tell you, you have to get something that speaks the "language"....

Sure the tools go for $50 to a couple hundred.... But when you think about what cars cost, and what an incorrect repair wastes, it's cheap to get a scanner, and they last a long, long time....

Matt
Thanks Matt
That is what I feared. On my '02 vette I can access all the on-board computers from within the car. no special code reader needed. You can scroll through each computer and it will show if there are any Current or Historical codes stored. Then I just look the number up in the factory service manual.
Reply With Quote
  #15  
Old 01-25-2009, 07:51 AM
smackboy1 smackboy1 is offline
3rd Gear
 
Join Date: Aug 2007
Location: Princeton, NJ
Posts: 207
Feedback Score: 0 reviews
Gallery
Autozone will lend you a scanner for free for 5 minutes to use in the parking lot to read the code. After reading the code you have the option of leaving it for further diagnosis or clearing it.
__________________
2007 MINI Cooper S
Chili Red w/ White Roof/Mirrors
Reply With Quote
  #16  
Old 06-01-2009, 09:08 AM
smackboy1 smackboy1 is offline
3rd Gear
 
Join Date: Aug 2007
Location: Princeton, NJ
Posts: 207
Feedback Score: 0 reviews
Gallery
Epilogue: We finally got the MINI back in February after about 2 months. They had to basically remove the head, valves, pistons etc. and send it to a machine shop to clean out all the carbon. The engine basically got a top end rebuild with updated parts.

Luckily Princeton MINI really took care of us and we had a loaner car the entire time and of course everything was covered as a warranty repair. They kept us informed and there was never any blaming "bad fuel" or any other bogus excuses. They just got in touch with MINI and got everything taken care of. They even took care of a few extra service items gratis.

Since then the car has run for another 8,000 miles without problems. I just drained out the old oil and it looks and smells fine.
__________________
2007 MINI Cooper S
Chili Red w/ White Roof/Mirrors
Reply With Quote
  #17  
Old 06-01-2009, 12:15 PM
62minimn 62minimn is offline
2nd Gear
 
Join Date: Jun 2006
Posts: 75
Feedback Score: 2 reviews
Gallery
Intake Manifold

I had the same code and the one saying cylinder running lean after a pulley change. Changed plugs, injectors, different head and cam, coil pack and more. Finally got the bright idea to flow the intake manifold. Shop said 2-3% difference beteween cylinders was acceptable, Cyl 2 was 18-21% more than any other cylinder with stock manifold. My suggestion flow the intake if you have any more problems.
Reply With Quote
  #18  
Old 06-02-2009, 09:13 AM
Dr Obnxs's Avatar
Dr Obnxs Dr Obnxs is offline
Vendor
 
Join Date: Sep 2004
Location: Woodside, CA
Posts: 10,352
Feedback Score: 7 reviews
Gallery
What you really need...

is the other three to flow like #2!

But yours is the first case of a bad intake manifold that I've ever run into (I'm sure there are others, it's just very, very rare.)

But after reading over this thread, some other things to keep in mind:

If just one cylinder is reporting misfire, it's going to be something specific to that cylinder, and probably not even the coil! (The Tritec uses something called wasted spark ignition, so there are two coils that fire into two cylinders each and every time they fire... Helps with emissions). This means plug, plug wire, or problems in the cylender in question. For the OP, that was carbon build up in #2.

Anyway, alls well that ends well....

Matt
__________________
FES Auto= Worlds Best Shiftlight-Ian Cull Auto-Up-Auto Sportplus - R52 Top Commander
but wait, there's more! InvisiLens - Bav Tech SW - High Current Relay Module-
'02 CR/W S, Bunch of fun mods... '08 NFR/S Clubbie, close to bone-stock...
Dr Obnxs' Musings: a blog about cars, energy, technology and more....
Reply With Quote
  #19  
Old 06-17-2009, 08:04 AM
mini cooper mini cooper is offline
1st Gear
 
Join Date: Mar 2008
Posts: 33
Feedback Score: 0 reviews
Gallery
i have the same thing, miss fire on cylinder 4. Dealer has changed coil plugs and injector, with no luck east bay mini has sent in a PUMA to mini usa for more help. i am thinking that it is the carbon build up also,

To me it makes since because we are venting the crank case to the intake manifold and no way to clean the intake with fuel because we are directly injecting fuel to the cylinder.
Reply With Quote
  #20  
Old 12-01-2012, 11:27 PM
Mini-help-me-please Mini-help-me-please is offline
Neutral
 
Join Date: Dec 2012
Posts: 2
Feedback Score: 0 reviews
Gallery
What was the problem?

Quote:
Originally Posted by smackboy1 View Post
I spoke too soon. At low revs and at idle the engine is lumpy sounding. Starts and runs, but sounds rough at idle. Also there is black soot blowing out the exhaust and the occasional pop comes out the pipes. Also, it's low on oil.
Hello, I have the exact same symptoms with my wife's mini, did you ever figure out what it was?

Thanks,
Reply With Quote
  #21  
Old 12-01-2012, 11:28 PM
Mini-help-me-please Mini-help-me-please is offline
Neutral
 
Join Date: Dec 2012
Posts: 2
Feedback Score: 0 reviews
Gallery
Sounds like what happened to me.

Hello, I have the exact same symptoms with my wife's mini, did you ever figure out what it was?

Thanks,
Reply With Quote
Old 12-01-2012, 11:28 PM
 
 
 
Reply

Thread Tools Search this Thread
Search this Thread:

Advanced Search

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 Off
Pingbacks are Off
Refbacks are Off

Forum Jump


MINI CooperMINI Cooper PrivacyMINI Cooper Terms of UseMINI Cooper Guidelines MINI Cooper Advertising The North American MINI Cooper Community
  MINI Cooper news, forums, FAQs, and reviews for enthusiasts and owners of the North American MINI Cooper
All times are GMT -7. The time now is 05:59 AM.
 Copyright © 2002-2008 North American Motoring. All Rights Reserved.     Powered by vBulletin and vBulletin Plugins by Drive Thru Online, Inc.

All times are GMT -7. The time now is 05:59 AM.



Powered by vBulletin and vBulletin Plugins by Drive Thru Online, Inc.
North American Motoring is an independently operated web site supporting MINI owners and enthusiastsworldwide. As such it has no official relationship with MINI USA, BMW AG, or BMW of North America.All original artwork and design is Copyright © 2002-2004 North American Motoring.
Admin Account Passwords

Search Engine Friendly URLs by vBSEO 3.5.2