1st Gen R50 Cooper Most liked posts in thread: P0340, P0341, TCS Head Scratcher

  1. MCS02

    MCS02 Moderator
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    #3 MCS02, Dec 12, 2015
    Welcome to MA! The you may have a bad wheel speed sensor or it is not plugged in all the way causing the the traction control light to be intermittent.
     
  2. Dave.0

    Dave.0 Helix & RMW Powered
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    #5 Dave.0, Dec 12, 2015
    After you check the wheel sensors swap out your plug wires for sh!ts and giggles. Minis like OEM coils, wires and NGK plugs.

    MSD coils and other aftermarket wires and stuff are known to cause strange problems that you would never think are related.
     
  3. MCS02

    MCS02 Moderator
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    #8 MCS02, Dec 14, 2015
    Chris, saying you had issues is an understatement :lol:

    But now that I think about it have you tried your batt. I can't remember
     
  4. rmagdaleno

    rmagdaleno New Member

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    #9 rmagdaleno, Dec 18, 2015
    Hey guys, update time.
    I checked the wheel speed sensors and everything was plugged in properly. I haven't tried another battery since the original dropped to below a working voltage.
    As luck would have it though, I took the car out for a spin last night and both the MIL and TCS light went out! Maybe it just needed some time with the new setup to stabilize.

    As far as the Optima battery, the only problem I encountered was the fit was a bit tight. The cables were a bit short but once I got rid of the plastic cover for the jump terminal, all was good.

    I'll let you guys know if anything changes, taking her out for a longer drive today.

    I hope nothing else pops up, I'm soooo close to finishing my 53! :fingerscrossed:
     
  5. interzonearts

    interzonearts New Member

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    #10 interzonearts, Dec 18, 2015
    The driver side window in our Cooper wouldn't open for a couple of days after i replaced the alternator last summer.Then it started working out of the sudden. It's been working fine since.
     
  6. interzonearts

    interzonearts New Member

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    #2 interzonearts, Dec 12, 2015
    Welcome to the forum, it seems you'll be great assess to it:)
     
  7. rmagdaleno

    rmagdaleno New Member

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    #4 rmagdaleno, Dec 12, 2015
    Thanks for the suggestion! Now that you mention it, I don't remember if I included that in my final assembly check-list. We have rain for the next few days, but I'll give that a look once the weather clears up. :fingerscrossed:
     
  8. rmagdaleno

    rmagdaleno New Member

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    #6 rmagdaleno, Dec 12, 2015
    I did use NGK plugs, but unfortunately the original wires fell apart as I was removing them. I'll try swapping for the ones that I'd been using reliably on my R53. Thanks for all the suggestions guys!
     
  9. RallyMini370

    RallyMini370 Well-Known Member

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    #7 RallyMini370, Dec 14, 2015
    I'm having a misfire issue with my R50 and I fitted an Optima Red top a few weeks before the issues started. Any chance you can try another battery?