1st Gen R53 Cooper S Most liked posts in thread: Multiple Misfire in Mid rev ...

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  1. MCS02

    MCS02 Moderator
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    #20 MCS02, Jan 15, 2013
    Did they use the correct belt for the SC. With a 15% pulley it takes a shorter belt. If the belt is slipping you would lose boost, not have a miss fire.
    If you have checked your plugs, plug wires, and coil pack then you really need to hook up a OBD II code reader. This is your best bet for finding the problem.
    Good luck. Let us know what you find.
     
  2. Minidave

    Minidave Well-Known Member
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    #22 Minidave, Jan 15, 2013
    Definitely......Scott nailed it.
     
  3. Devrider

    Devrider New Member

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    #23 Devrider, Jan 15, 2013
    So you tell me that all this ( misfire, check engine and SC ) is cause by SC crank pulley ... So the mechanic who did my head didn't put it back the right way ?

    DEv
     
  4. Crashton

    Crashton Club Coordinator

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    #24 Crashton, Jan 15, 2013
    The crankshaft pulley is also a harmonic damper. They have rubber in them. With age they start to delaminate & cause the problems you are having.

    I don't think this is your mechanics fault.
     
  5. jeffster06

    jeffster06 Active Member

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    #25 jeffster06, Jan 15, 2013
    If its the crank pulley failure your code will be from a boost loss fault (at least that's what I got) When mine went though I couldn't get over 2k RPM without going into limp mode.

    Also another possibility is that the reduction pulley on the super charger somehow worked loose and is slipping. This really depends how old your alta pulley is because they redesigned it at some point (to prevent this). A friend of mine had his pulley get loose on him before it was acting somewhat like how yours is.
     
  6. Devrider

    Devrider New Member

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    #26 Devrider, Jan 15, 2013
    Ok and a problem like that cost how much ... already cost me 5k for the head ... my mechanic change the sc oil and told me everything was looking good ... maybe he but it back with too/not enough tension ...

    DEv
     
  7. Devrider

    Devrider New Member

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    #27 Devrider, Jan 16, 2013
    I found someone with a OBD2 reader, will get it scan soon ... Let you know ASAP ... Hope it not a big problem ...

    DEv
     
  8. jeffster06

    jeffster06 Active Member

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    #28 jeffster06, Jan 16, 2013
    If I remember correctly my crank pulley replacement which included the pulley and a new belt cost me around $600 I have the receipt somewhere and could give you the exact amount. most of that cost came from the price of the ATI damper.
     
  9. Devrider

    Devrider New Member

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    #29 Devrider, Jan 16, 2013
    Yay another 1K bill to come !! Do i have to replace the pulley or just belt ?

    DEv
     
  10. jeffster06

    jeffster06 Active Member

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    #30 jeffster06, Jan 16, 2013
    It really depends on whats wrong. figuring that out is the first part. I know when my crank pulley went it wobbled so bad it snapped the belt. I knew the pulley was bad because I could rotate it by hand (the rubber completely separated)
     
  11. Devrider

    Devrider New Member

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    #31 Devrider, Jan 16, 2013
    I have the code !! P0302 ( P0302 Cylinder 2 Misfire Detected ) ... So i delete the check engine and scrub each connection on the coil pack ... For now no check engine and no misfire ... Maybe it was a bad connection ...

    DEv
     
  12. minsanity

    minsanity Well-Known Member

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    #32 minsanity, Jan 16, 2013
    When my damper went, batt light lit whenever I turned A/C on. Light off when A/C shut. I knew it was it. Glad was able to baby it home w/o popping the SES. Removed belt & checked damper w/c just fell apart in 2pcs. My options were fluid or ATI, never the OEM again. Went w/ ATI. Not a difficult install w/ all the tips on here & from Keith. It's very well made.
     
  13. ScottinBend

    ScottinBend Space Cowboy
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    #33 ScottinBend, Jan 16, 2013
    I also just noticed that you have the Shark Injector(?) installed. You really should consider removing it as it has been shown to cause all kinds of problems.
     
  14. Devrider

    Devrider New Member

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    #34 Devrider, Jan 16, 2013
    I know ... but people tell me to be very carefull when removing it ... if for some reason my battery loose it power it f*** everything on the ecu ... so i have to find a power supply before thinking of removing it ...

    I heard that Shark recommand to install MSD coilpack with cooler spark ... is it true ?

    DEv
     
  15. Dave.0

    Dave.0 Helix & RMW Powered
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    #35 Dave.0, Jan 16, 2013
    Shark + MSD = Mini DEATH


    Please do yourself a favor and remove both as soon as you can or you will be shopping for a new car soon.
     
  16. Devrider

    Devrider New Member

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    #36 Devrider, Jan 17, 2013
    For now i only have the Shark ... If i remove it, is it better to put a MSD coilpack with my 15% SC pulley ...

    DEv
     
  17. ScottinBend

    ScottinBend Space Cowboy
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    #38 ScottinBend, Jan 17, 2013
    No....go back to OEM and simply check the #3 terminal for the occasional corrosion. The MSD pack is prone to failure. Only thing it offers is a bit of red bling.
     
  18. Devrider

    Devrider New Member

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    #39 Devrider, Jan 17, 2013
    Hope it was the real problem ... Didn't push it too much for now ... Will try it 2day, road are dry ( -5 F here )

    DEv
     
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