2nd Gen R56 Cooper S Most liked posts in thread: Sputtering

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  1. itsmewutup

    itsmewutup New Member

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    #9 itsmewutup, Nov 15, 2012
    Can't thank you enough. That is one of the best DIY guides I've ever seen.
     
  2. Jason Montague

    Jason Montague New Member
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    #10 Jason Montague, Nov 15, 2012
    Last edited: Nov 15, 2012
    :cornut: MM thank you very much. Your kindness is surpassed only by your knowledge.(yeah-I'm serious):Thumbsup:

    Jason
     
  3. itsmewutup

    itsmewutup New Member

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    #11 itsmewutup, Nov 18, 2012
    Well I did a carbon clean today (that was all kinds of fun) and still getting some sputtering. Its basically anytime I step on it, but I can let off just a bit and step on it again and it quits sputtering. I'm at a loss for what is. Any insight would be appreciated.
     
  4. Jason Montague

    Jason Montague New Member
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    #12 Jason Montague, Nov 18, 2012
    :cornut: If you've done all of the things that we previously listed then, it's time to see an experienced MINI shop. List your location and some of the MA people in that area will come up and tell you the closest reliable shop.:Thumbsup:

    Jason
     
  5. itsmewutup

    itsmewutup New Member

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    #15 itsmewutup, Nov 21, 2012
    Does anyone have any suggestions for replacing the downstream o2 sensor with something that isn't ridiculously priced?
     
  6. itsmewutup

    itsmewutup New Member

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    #16 itsmewutup, Nov 21, 2012
    Bump
     
  7. Nathan

    Nathan Founder

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    #17 Nathan, Nov 22, 2012
    If you don't mind slightly used then yes. I happen to have one in my desk drawer that has about 5k miles on it. Since I went with a long tube race header I needed longer leads. Someone made them for me on new O2 sensors so the one from my car has been sitting in a box in my desk ever since.

    How about $100 shipped via Priority Mail?

    Part # is 11 78 0 872 674
     
  8. itsmewutup

    itsmewutup New Member

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    #18 itsmewutup, Nov 22, 2012
    Sounds like a deal. How would you like the payment?
     
  9. Jason Montague

    Jason Montague New Member
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    #20 Jason Montague, Dec 2, 2012
    :cornut: I'm so glad that things are working out for you.:Thumbsup:

    Jason
     
  10. itsmewutup

    itsmewutup New Member

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    #21 itsmewutup, Dec 2, 2012
    Thank much for all the info. Next is the o2 sensor. Where exactly is the downstream located?
     
  11. grodenglaive

    grodenglaive New Member

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    #22 grodenglaive, Dec 3, 2012
    Are you saying you solved the p115c problem just by changing the fuel filter?:mad2::mad2::mad2:
     
  12. grodenglaive

    grodenglaive New Member

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    #24 grodenglaive, Dec 4, 2012
    ok I feel better now:eek: I checked all hoses and clamps as did the dealer.
     
  13. itsmewutup

    itsmewutup New Member

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    #25 itsmewutup, Dec 5, 2012
    So newest update. Although the sputtering is gone with the help of the fuel filter change. It still didn't have the power that it use to. I decided to really push it off a stop light on my way home from work this morning and it lost all power whatsoever and threw my p0420 code which I know has to do with the post cat O2 sensor. But I didn't think that would make it run like it did. Possible I have a bad cat?
     
  14. itsmewutup

    itsmewutup New Member

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    #28 itsmewutup, Dec 5, 2012
    That's what I was afraid of :( it does feel like it getting alot of back pressure.
     
  15. itsmewutup

    itsmewutup New Member

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    #29 itsmewutup, Dec 8, 2012
    So any suggestions on cats that aren't $1000?
     
  16. Jason Montague

    Jason Montague New Member
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    #30 Jason Montague, Dec 8, 2012
    :cornut: Canabalise one from a MINI in a wrecking yard. No guaranties on quality/longivity though.:Thumbsup:

    Jason
     
  17. Crashton

    Crashton Club Coordinator

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    #31 Crashton, Dec 8, 2012
    The trouble you may run into is it is against the law to sell a used converter & even to install one. Odd, but true. You may get lucky & be able to buy one anyhow. :fingerscrossed:
     
  18. Jason Montague

    Jason Montague New Member
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    #32 Jason Montague, Dec 8, 2012
    :cornut:Drive(or trailor it) over the Canadian or Mexican border, which ever is closer, do the deed and drive back home. Nothing was done in the US. It is similar to what's going on with the Original Minis that are coming in now a days to the US. They are getting titled(oft times as antiques or older than the truly are. They don't seem to be on the radar yet but certainly great finesse is advised) and no one is getting in trouble so far.:Thumbsup:

    Jason
     
  19. Jason Montague

    Jason Montague New Member
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    #34 Jason Montague, Dec 8, 2012
    :cornut: I only hope that you have a very friendly uninformed shady inspection station OR go to Oklahoma they don't have vehicle inspection any more.:Thumbsup:

    Jason
     
  20. Dave.0

    Dave.0 Helix & RMW Powered
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    #35 Dave.0, Dec 8, 2012
    Replace the rear O2 before you go CATLESS. You can also try and stall you car by blocking the exhaust with a few towels to see if you have an exhaust leak.

    I really don't think you have a bad cat.
     
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