1st Gen R50 Cooper 02 S with SES & EML after misfire...

Discussion in '1st Generation: 2002–06 R50, R53 & 2004–08 R52' started by rivercityRN, May 22, 2014.

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  1. rivercityRN

    rivercityRN New Member

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    #1 rivercityRN, May 22, 2014
    Last week the SES lamp came on...no symptoms, just the light. I took it to the shop and the code read "misfire". After a couple days of troubleshooting, the mechanic found that the fuel pump was the issue and replaced it. It drove fine for nearly a week until this morning. My son said it made a soft "pop" followed by a sudden power loss with the SES and now EML indicators. He pulled over and shut the car off til I arrived. Upon restarting, only the SES lamp is on and the car drove fine back to the house. The only common variable between the two incidents is that the car was low enough on fuel for the red light to come on. I'm taking the car back in today and thought I'd throw it out there to you guys for some input.
     
  2. Dave.0

    Dave.0 Helix & RMW Powered
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    #2 Dave.0, May 22, 2014
    Fill the tank and scan for codes.
     
  3. ZippyNH

    ZippyNH Well-Known Member

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    #3 ZippyNH, May 22, 2014
    +1
    And I suggest getting in the habit of keeping more fuel in the tank....
    The fuel cools the pump....prolonging its life....running a car with less than a gallon of fuel in the tank means thecpump is not submerged....so not getting cooled....
    Maybe you will get lucky and the pump just Sucked up some air resulting in low psi...resulting in a misfire that will not reoccur.....
     
  4. rivercityRN

    rivercityRN New Member

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    #4 rivercityRN, May 27, 2014
    After running the codes, the mechanic found just one: P1125, Throttle Body Plausibility. It was a one-time occurrence and the guy drove the car about 40 miles without any issues. What do you think?
     
  5. Dave.0

    Dave.0 Helix & RMW Powered
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    #5 Dave.0, May 27, 2014
    With running that low on fuel anything is possible once. I never go below a 1/4 tank.

    Run it for a few fuel fills and see if it happens again.
     
  6. ZippyNH

    ZippyNH Well-Known Member

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    #6 ZippyNH, May 27, 2014
    +1
    I once got one of those in a non-mini.....
    Was after a very hard bit of driving up a hill....guess the computer thought my pedal use was impossible....lol...was fun though!!
     

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