MINI Cooper MINI Cooper specs
 

Go Back   North American Motoring > 1st Generation MINIs > Modifications > Drivetrain (Cooper S)
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
Best Mini MPG
4 Replies, 105 Views
Advertisement

Reply
 
 
 
 
Thread Tools Search this Thread
  #1  
Old 06-09-2009, 10:02 AM
FL_blue_MINI's Avatar
FL_blue_MINI FL_blue_MINI is offline
4th Gear
 
Join Date: Oct 2006
Location: Ft Lauderale
Posts: 574
Feedback Score: 1 reviews
Send a message via AIM to FL_blue_MINI Send a message via MSN to FL_blue_MINI
Gallery
P0302 - Cylinder 2 Misfire

Okay guys and gals,

I have had it up to here (Place image of person holding hand above head here) with the misfire thing...

About a month and a half or two ago I got a misfire code P0302. I was driving down the highway and the MINI went into limp mode. Thinking maybe its just a freak occurrence, I turned the car off and when I started it back up, it was fine. At that time I was at WOT in 6th about 4000RPM.

Now I have tested it and it will happen in 5th and 6th gear only, ~at 4100RPM, doesn't matter if its WOT or not. So, now I stay away from the higher speeds.

I looked at the plugs that were there at the time, and they looked "OK" OEM, I swapped #2 with #1 and then #2 with #4, and no avail. Since then I have replaced them, wires, and coil. I am tired of just throwing money at it to try and solve this. I also took off the intercooler and throttle body, cleaning both of all oil/dirt/grime.

Any ideas?

Addison
__________________
2006 MC 11/06-->4/08 (RIP)
2004 MCS 12/08--> Current
OUT: OEM White Tails; 15%; 20%; Lit Door Handles
IN: Ian CullsAuto-Up; Valentine V1
UNDER: MiniMadness Control arm Bushings; MSD Coil; MSD Wires; CarboTech 1521 Pads; TSW Rotors;
Reply With Quote
  #2  
Old 06-09-2009, 10:12 AM
Mike@Mynes Mike@Mynes is offline
Banned
 
Join Date: Sep 2007
Posts: 350
Feedback Score: 2 reviews
Gallery
When you swapped the #2 and #1 plugs, did you get the same code and Limp mode?

Questions:
- what plugs did you replace them with?
- did you clear the codes after the parts were replaced?
- did you check your injectors? swap it out with #1 and see if you get the misfiring code in cylinder 1...

mike
Reply With Quote
  #3  
Old 06-09-2009, 10:16 AM
FL_blue_MINI's Avatar
FL_blue_MINI FL_blue_MINI is offline
4th Gear
 
Join Date: Oct 2006
Location: Ft Lauderale
Posts: 574
Feedback Score: 1 reviews
Send a message via AIM to FL_blue_MINI Send a message via MSN to FL_blue_MINI
Gallery
Quote:
Originally Posted by Mike@Mynes View Post
When you swapped the #2 and #1 plugs, did you get the same code and Limp mode?

Questions:
- what plugs did you replace them with?
- did you clear the codes after the parts were replaced?
- did you check your injectors? swap it out with #1 and see if you get the misfiring code in cylinder 1...

mike
1. I honestly don't remember. I want to say Denso Iridiums.
2. I did clear the codes, I have the Scangauge II.
3. I did not check my injectors. I will try that tonight. Is there anything special I need to do to remove them?

Would there still be a random-ish problem like this if the injector was bad? Wouldn't the problem be consistant? Or am I wrong in that assumption?

Addison
__________________
2006 MC 11/06-->4/08 (RIP)
2004 MCS 12/08--> Current
OUT: OEM White Tails; 15%; 20%; Lit Door Handles
IN: Ian CullsAuto-Up; Valentine V1
UNDER: MiniMadness Control arm Bushings; MSD Coil; MSD Wires; CarboTech 1521 Pads; TSW Rotors;
Reply With Quote
  #4  
Old 06-09-2009, 11:54 AM
checkmate2006 checkmate2006 is offline
Banned
 
Join Date: Aug 2006
Location: Who knows?
Posts: 1,127
Feedback Score: 1 reviews
Gallery
wear mechanics gloves for sure
Reply With Quote
  #5  
Old 06-09-2009, 12:50 PM
BlimeyCabrio BlimeyCabrio is offline
6th Gear
 
Join Date: Sep 2006
Location: Holly Springs, NC
Posts: 8,768
Feedback Score: 5 reviews
Gallery
See this thread:
http://www.northamericanmotoring.com...ll-how-to.html
__________________
I'm Paul, The car is Blimey--- BlimeyCabrio's Blog--- 2006 MCSCa w/a few mods and Union Jacks

Thirteen-time Dragon Veteran with Switchback Sixth Sense, hasn't looked like that in a while...
Reply With Quote
  #6  
Old 06-09-2009, 03:16 PM
FL_blue_MINI's Avatar
FL_blue_MINI FL_blue_MINI is offline
4th Gear
 
Join Date: Oct 2006
Location: Ft Lauderale
Posts: 574
Feedback Score: 1 reviews
Send a message via AIM to FL_blue_MINI Send a message via MSN to FL_blue_MINI
Gallery
Thanks guys! so far. I did the switcheroo. We'll see what happens.

Injector 1:
Click the image to open in full size.Click the image to open in full size.


Injector 2: (proposed bad one)
Click the image to open in full size.Click the image to open in full size.

Injector 3:
Click the image to open in full size.Click the image to open in full size.

Injector 4:
Click the image to open in full size.Click the image to open in full size.


I'm going out for a test run. Hopefully the misfire changes to CYL1
__________________
2006 MC 11/06-->4/08 (RIP)
2004 MCS 12/08--> Current
OUT: OEM White Tails; 15%; 20%; Lit Door Handles
IN: Ian CullsAuto-Up; Valentine V1
UNDER: MiniMadness Control arm Bushings; MSD Coil; MSD Wires; CarboTech 1521 Pads; TSW Rotors;
Reply With Quote
  #7  
Old 06-09-2009, 03:57 PM
quikmni quikmni is offline
6th Gear
 
Join Date: May 2004
Location: Orcutt, CA
Posts: 2,223
Feedback Score: 0 reviews
Gallery
I had the same code on a different car. After checking plugs and changing plug wires, I finally traced it to the fuel injector electrical connector not making good contact.
__________________
2006 MCS JCW GP #1405: Adj Front Camber Plates, 19mm Rear Sway Bar, MM Front Lower Brace, Milltek Cat-Back, TCE 13" Front/11.75" Rear BBK, 15mm Spacers, Wheel Studs, JCM Modified Intake, MM Filter, Gauges
Reply With Quote
  #8  
Old 06-09-2009, 03:58 PM
FL_blue_MINI's Avatar
FL_blue_MINI FL_blue_MINI is offline
4th Gear
 
Join Date: Oct 2006
Location: Ft Lauderale
Posts: 574
Feedback Score: 1 reviews
Send a message via AIM to FL_blue_MINI Send a message via MSN to FL_blue_MINI
Gallery
Nope. That didn't do it. Still got the code at 4300RPM on Cyl 2.
__________________
2006 MC 11/06-->4/08 (RIP)
2004 MCS 12/08--> Current
OUT: OEM White Tails; 15%; 20%; Lit Door Handles
IN: Ian CullsAuto-Up; Valentine V1
UNDER: MiniMadness Control arm Bushings; MSD Coil; MSD Wires; CarboTech 1521 Pads; TSW Rotors;
Reply With Quote
  #9  
Old 06-09-2009, 04:16 PM
Fatherdeth's Avatar
Fatherdeth Fatherdeth is offline
6th Gear
 
Join Date: Jul 2004
Location: Navarre, FL
Posts: 4,717
Feedback Score: 0 reviews
Send a message via AIM to Fatherdeth Send a message via Skype™ to Fatherdeth
Gallery
Garage
Reverse for me. It's cylinder 3 kicking the misfire for me. Are you getting any othe codes too. I've got a P0108 code and I'm going with a bad MAP sensor. Good luck and keep us posted.
__________________
~Lucretia~ 2012 Buick Regal GS aka**Blackarachnia**
Carbon Black Metallic, 300HP/330 lb.ft.TQ (Trifecta Tune), 6 Speed Manual, Brembo Brakes, Normal, Sport, and Gran Sport Driving Modes, Flat Bottomed Racing Steering Wheel, Sport Seats.
Reply With Quote
  #10  
Old 06-09-2009, 05:02 PM
BlimeyCabrio BlimeyCabrio is offline
6th Gear
 
Join Date: Sep 2006
Location: Holly Springs, NC
Posts: 8,768
Feedback Score: 5 reviews
Gallery
Mine was doing it a couple of months back and went away after I cleaned and greased coil and spark plug terminals. But I know you're both past that. Misfires are a bit hinky to diagnose on these cars...
__________________
I'm Paul, The car is Blimey--- BlimeyCabrio's Blog--- 2006 MCSCa w/a few mods and Union Jacks

Thirteen-time Dragon Veteran with Switchback Sixth Sense, hasn't looked like that in a while...
Reply With Quote
  #11  
Old 06-09-2009, 06:47 PM
FL_blue_MINI's Avatar
FL_blue_MINI FL_blue_MINI is offline
4th Gear
 
Join Date: Oct 2006
Location: Ft Lauderale
Posts: 574
Feedback Score: 1 reviews
Send a message via AIM to FL_blue_MINI Send a message via MSN to FL_blue_MINI
Gallery
The only other code that I got p1688 which from what I can gather is "Electronic Throttle Control Monitor Level 2/3 Mass Air Flow Calculation"

I'm not sure if they are related or not.
__________________
2006 MC 11/06-->4/08 (RIP)
2004 MCS 12/08--> Current
OUT: OEM White Tails; 15%; 20%; Lit Door Handles
IN: Ian CullsAuto-Up; Valentine V1
UNDER: MiniMadness Control arm Bushings; MSD Coil; MSD Wires; CarboTech 1521 Pads; TSW Rotors;
Reply With Quote
  #12  
Old 06-09-2009, 07:06 PM
62minimn 62minimn is offline
2nd Gear
 
Join Date: Jun 2006
Posts: 75
Feedback Score: 2 reviews
Gallery
I had the same code and changed all the same parts and more. Finally flowed the intake manifold and found it flowed 17-20% more on cylinder 2 than any other cylinder.
Reply With Quote
  #13  
Old 06-09-2009, 09:20 PM
FL_blue_MINI's Avatar
FL_blue_MINI FL_blue_MINI is offline
4th Gear
 
Join Date: Oct 2006
Location: Ft Lauderale
Posts: 574
Feedback Score: 1 reviews
Send a message via AIM to FL_blue_MINI Send a message via MSN to FL_blue_MINI
Gallery
Quote:
Originally Posted by 62minimn View Post
I had the same code and changed all the same parts and more. Finally flowed the intake manifold and found it flowed 17-20% more on cylinder 2 than any other cylinder.
I'm not sure I understand what you mean. How did you test and what does that mean?
__________________
2006 MC 11/06-->4/08 (RIP)
2004 MCS 12/08--> Current
OUT: OEM White Tails; 15%; 20%; Lit Door Handles
IN: Ian CullsAuto-Up; Valentine V1
UNDER: MiniMadness Control arm Bushings; MSD Coil; MSD Wires; CarboTech 1521 Pads; TSW Rotors;
Reply With Quote
  #14  
Old 06-10-2009, 12:50 PM
62minimn 62minimn is offline
2nd Gear
 
Join Date: Jun 2006
Posts: 75
Feedback Score: 2 reviews
Gallery
Flowed intake manifold

We put the intake manifold on a flow bench, it should that the volume of air that in #2 cylinder was much high than the others. So if the same amount of fuel is applied to each cylinder the ratio of fuel to air is really different in one cylinder. In my case it was more air than fuel which had one cylinder really lean and hot.
Reply With Quote
  #15  
Old 06-10-2009, 06:04 PM
FL_blue_MINI's Avatar
FL_blue_MINI FL_blue_MINI is offline
4th Gear
 
Join Date: Oct 2006
Location: Ft Lauderale
Posts: 574
Feedback Score: 1 reviews
Send a message via AIM to FL_blue_MINI Send a message via MSN to FL_blue_MINI
Gallery
Quote:
Originally Posted by 62minimn View Post
We put the intake manifold on a flow bench, it should that the volume of air that in #2 cylinder was much high than the others. So if the same amount of fuel is applied to each cylinder the ratio of fuel to air is really different in one cylinder. In my case it was more air than fuel which had one cylinder really lean and hot.
Ok, thank you for the explanation. How can we/you/I fix that? Is there a way? Can I test that anyway here?
__________________
2006 MC 11/06-->4/08 (RIP)
2004 MCS 12/08--> Current
OUT: OEM White Tails; 15%; 20%; Lit Door Handles
IN: Ian CullsAuto-Up; Valentine V1
UNDER: MiniMadness Control arm Bushings; MSD Coil; MSD Wires; CarboTech 1521 Pads; TSW Rotors;
Reply With Quote
  #16  
Old 06-10-2009, 08:30 PM
batrugger's Avatar
batrugger batrugger is offline
5th Gear
 
Join Date: Dec 2005
Location: Hesperia, Ca.
Posts: 942
Feedback Score: 8 reviews
Gallery
You should do a compression test. I went through this same thing on the same cylinder and ended up having a bad valve. A few months later after getting it all fixed up, we were having random misfires and fixed it all and picked up almost 40 more whp by changing both MAP sensors and the wiring harness. It has been running perfectly now for almost a year. So I would say that there are three more possible fixes for you. Good Luck
__________________
Kelli's MINI: She drives it, I work on it
My MK2 Golf 1.8T
Reply With Quote
  #17  
Old 06-10-2009, 10:04 PM
FL_blue_MINI's Avatar
FL_blue_MINI FL_blue_MINI is offline
4th Gear
 
Join Date: Oct 2006
Location: Ft Lauderale
Posts: 574
Feedback Score: 1 reviews
Send a message via AIM to FL_blue_MINI Send a message via MSN to FL_blue_MINI
Gallery
Quote:
Originally Posted by batrugger View Post
You should do a compression test. I went through this same thing on the same cylinder and ended up having a bad valve. A few months later after getting it all fixed up, we were having random misfires and fixed it all and picked up almost 40 more whp by changing both MAP sensors and the wiring harness. It has been running perfectly now for almost a year. So I would say that there are three more possible fixes for you. Good Luck
UGH. That sounds expensive....
__________________
2006 MC 11/06-->4/08 (RIP)
2004 MCS 12/08--> Current
OUT: OEM White Tails; 15%; 20%; Lit Door Handles
IN: Ian CullsAuto-Up; Valentine V1
UNDER: MiniMadness Control arm Bushings; MSD Coil; MSD Wires; CarboTech 1521 Pads; TSW Rotors;
Reply With Quote
  #18  
Old 06-14-2009, 03:56 PM
FL_blue_MINI's Avatar
FL_blue_MINI FL_blue_MINI is offline
4th Gear
 
Join Date: Oct 2006
Location: Ft Lauderale
Posts: 574
Feedback Score: 1 reviews
Send a message via AIM to FL_blue_MINI Send a message via MSN to FL_blue_MINI
Gallery
Well, I just ran a compression test:

CYL1: 155psi/155psi
CYL2: 160psi/156psi
CYL3: 160psi/160psi
CYL4: 161psi/161psi

These are test1/test2. both run "dry".
__________________
2006 MC 11/06-->4/08 (RIP)
2004 MCS 12/08--> Current
OUT: OEM White Tails; 15%; 20%; Lit Door Handles
IN: Ian CullsAuto-Up; Valentine V1
UNDER: MiniMadness Control arm Bushings; MSD Coil; MSD Wires; CarboTech 1521 Pads; TSW Rotors;

Last edited by FL_blue_MINI; 06-14-2009 at 03:57 PM. Reason: More informacion
Reply With Quote
  #19  
Old 06-14-2009, 11:35 PM
batrugger's Avatar
batrugger batrugger is offline
5th Gear
 
Join Date: Dec 2005
Location: Hesperia, Ca.
Posts: 942
Feedback Score: 8 reviews
Gallery
Compression is good then. Our number 2 was only hitting 80 and all the others were where you are at. You may want to try replacing the MAP sensors especially if you are throwing that p1688. There are two, one right in front and the other is right next to the throttle body.
__________________
Kelli's MINI: She drives it, I work on it
My MK2 Golf 1.8T
Reply With Quote
  #20  
Old 06-15-2009, 08:04 AM
62minimn 62minimn is offline
2nd Gear
 
Join Date: Jun 2006
Posts: 75
Feedback Score: 2 reviews
Gallery
Quote:
Originally Posted by FL_blue_MINI View Post
Ok, thank you for the explanation. How can we/you/I fix that? Is there a way? Can I test that anyway here?
If you are having the same problem I had the only way to check is to remove the intake manifold and take it to someone with a flow bench. I am not sure if anyone wants to take the time to machine the stock intake to make them even. At the time I had search here and a couple other website and found others that discovered there could be a large difference between the parts, they had suggested maybe Mini had more than one factory making the parts and there were differences in the molds. I ended up going with a aftermarket intake. Just for your information my car has been tuned on a Mustang dyno, at 195hp I burned a valve seal, 210hp I blow a hole in the head. During the tune if we had the A/F about stock the tubes on the exhaust would begin to glow, so the A/F was set to the rich side to avoid this happening. Since everything was measured from the tail pipe we did not know that is was one cylinder running so different. After putting the hole in the head we starting measuring everything and that is when we found the the problem. I did have my rev limiter up to 7800 and both problems happened at high revs. Not sure if this helps you are not.
Reply With Quote
  #21  
Old 06-15-2009, 01:00 PM
FL_blue_MINI's Avatar
FL_blue_MINI FL_blue_MINI is offline
4th Gear
 
Join Date: Oct 2006
Location: Ft Lauderale
Posts: 574
Feedback Score: 1 reviews
Send a message via AIM to FL_blue_MINI Send a message via MSN to FL_blue_MINI
Gallery
Well, I don't know what to do.

Today I got two more, different codes, P0123 and P0222.
P0222 Throttle/pedal position sensor/switch 'B' circuit low
P0123 Throttle/pedal position sensor/switch 'A' circuit High
__________________
2006 MC 11/06-->4/08 (RIP)
2004 MCS 12/08--> Current
OUT: OEM White Tails; 15%; 20%; Lit Door Handles
IN: Ian CullsAuto-Up; Valentine V1
UNDER: MiniMadness Control arm Bushings; MSD Coil; MSD Wires; CarboTech 1521 Pads; TSW Rotors;
Reply With Quote
  #22  
Old 06-15-2009, 01:05 PM
bean's Avatar
bean bean is offline
5th Gear
 
Join Date: Mar 2006
Posts: 915
Feedback Score: 1 reviews
Gallery
take it to Vista and ask to have greg work on your car....
Reply With Quote
  #23  
Old 07-12-2009, 06:37 PM
suysal7734 suysal7734 is offline
Neutral
 
Join Date: Jun 2009
Posts: 4
Feedback Score: 0 reviews
Gallery
Hi guys i changed almost everything, plugs, coils, injectors, fuel pump and still getting the P0203 misfire code.
Any advice for next step????

I notice today when fuel in the tank is less than half i get P0302 more often, i fill the tank and i drive it 75 miles without P0302

Please anyone with great idea shoot me a email at suysal@optonline.net, i am sick and tired throwing money to this problem, i am at the stage where i will drive the car to one steep clif and let it go

Last edited by suysal7734; 07-13-2009 at 06:08 PM.
Reply With Quote
  #24  
Old 07-12-2009, 08:13 PM
FL_blue_MINI's Avatar
FL_blue_MINI FL_blue_MINI is offline
4th Gear
 
Join Date: Oct 2006
Location: Ft Lauderale
Posts: 574
Feedback Score: 1 reviews
Send a message via AIM to FL_blue_MINI Send a message via MSN to FL_blue_MINI
Gallery
I don't know what to tell you... I ended up swapping Injectors 2 & 4 again and used some 3-in-1 oil on the O-ring, I don't get the code anymore. So, I am thinking it was a bad seal.
__________________
2006 MC 11/06-->4/08 (RIP)
2004 MCS 12/08--> Current
OUT: OEM White Tails; 15%; 20%; Lit Door Handles
IN: Ian CullsAuto-Up; Valentine V1
UNDER: MiniMadness Control arm Bushings; MSD Coil; MSD Wires; CarboTech 1521 Pads; TSW Rotors;
Reply With Quote
  #25  
Old 07-13-2009, 01:36 PM
UKSUV UKSUV is offline
6th Gear
 
Join Date: Oct 2004
Location: Marsala, Sicily
Posts: 3,675
Feedback Score: 0 reviews
Gallery
Ever since I pulled my engine for my 6 speed swap I have been getting misfire codes at random. Whenever the car feels like it. All throttle settings. And the misfire codes would be different. So you ask yourself. What is in common? Well...the pack for one. Changed the plugs, pack and wires. Still happened. And its not an injector because I have multiple cylinder misfire to along with individual cylinders. I know its a loose ground or the main injector harness connector because of the engine pull....I just dont really care to fix it right now. Well...I havent had my car for like 4 months...but thats a different story.
__________________
WWW.TEAMHALFASS.NET

^ CEO/PRESIDENT/EL JEFE ^

Reply With Quote
Old 07-13-2009, 01:36 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 06:28 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 06:28 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