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Thread: Where is the Cat Code Plug located? R1200RT-P

  1. #1
    Motor Man
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    Unhappy Where is the Cat Code Plug located? R1200RT-P

    Hello,
    Can you tell me where the cat code plug is?
    I have a r1200rt 2006 and it surges at a constant speed. I have tried adjusting the valves new plugs and nothing works. The bmw dealers act like they dont know what I am talking about.
    When the bike is running at a constant speed in warm weather it will surge. If it is running in cool weather it rides great. No surging.
    Any information would be great!!!
    Thanks
    Nigel
    Gaiensville Florida

  2. #2
    Registered User
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    R1200s don't have a Cat Code Plug.
    Karl
    2007 R1200ST

  3. #3
    Motor Man
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    Quote Originally Posted by kthutchinson View Post
    R1200s don't have a Cat Code Plug.
    You mean r1200rt?

  4. #4
    Benchwrenching PGlaves's Avatar
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    Quote Originally Posted by aso432 View Post
    Hello,
    Can you tell me where the cat code plug is?
    I have a r1200rt 2006 and it surges at a constant speed. I have tried adjusting the valves new plugs and nothing works. The bmw dealers act like they dont know what I am talking about.
    When the bike is running at a constant speed in warm weather it will surge. If it is running in cool weather it rides great. No surging.
    Any information would be great!!!
    Thanks
    Nigel
    Gaiensville Florida
    You need a different dealer - one who is honest and cares!

    Any dealer who claims not to know about surging is lying.
    Paul Glaves - "Big Bend", Texas U.S.A
    "The greatest challenge to any thinker is stating the problem in a way that will allow a solution." - Bertrand Russell
    http://www.bigbend.net/users/glaves

  5. #5
    Motor Man
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    Unhappy

    Quote Originally Posted by PGlaves View Post
    You need a different dealer - one who is honest and cares!

    Any dealer who claims not to know about surging is lying.
    PGlaves
    Have you heard about this type of surging?

  6. #6
    Cam Killer marchyman's Avatar
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    Quote Originally Posted by aso432 View Post
    Hello,
    Can you tell me where the cat code plug is?
    As other have notes, the hexheads don't have one.

    Quote Originally Posted by aso432 View Post
    I have a r1200rt 2006 and it surges at a constant speed.
    What RPM? My '05 GS will only do what you describe if I am at very low RPM. The exact RPM may vary with temperature.

  7. #7
    Benchwrenching PGlaves's Avatar
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    Quote Originally Posted by aso432 View Post
    PGlaves
    Have you heard about this type of surging?
    Yes, on many 1100s, some of the F650s, and other later models.

    Going to the dual plug ignition cured much of the problem, but as you have experienced not necessarily all of it.

    In almost all cases it is a lean surge, caused by the fuel mixture being too lean particularly under very light load, as cruising straight and level at low to moderate throttle openings.

    It may be an out of tolerance sensor. It may be several things within spec but stacked to the lean side of tolerances. It is often very difficult to get rid of.

    Dealers have heard about and been wrestling with surging since 1995 or 1996. If one hasn't heard about it in 14 or 15 years I don't know where they have been hiding.
    Paul Glaves - "Big Bend", Texas U.S.A
    "The greatest challenge to any thinker is stating the problem in a way that will allow a solution." - Bertrand Russell
    http://www.bigbend.net/users/glaves

  8. #8
    God? What god? roborider's Avatar
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    Nigel, you have what I call "The Motor Company" Syndrome!

    NEVER run a boxer below 3000 RPM. Most people cruise at about 4000rpm. Some 5000 rpm. Shift at about 5000 rpm to keep the revs at 4000 rpm (it drops about 800-1000 rpm per shift). If you are nailing it, shift around 6-7000 rpm and hold on!

    2000 RPM will kill a boxer.
    Rob C. , Raleigh, NC
    '05 R12RT, R90/6
    2007 CBR600RR & 09 V-Star
    Suzuki DR 350

  9. #9
    Motor Man
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    Quote Originally Posted by RoboRider View Post
    Nigel, you have what I call "The Motor Company" Syndrome!

    NEVER run a boxer below 3000 RPM. Most people cruise at about 4000rpm. Some 5000 rpm. Shift at about 5000 rpm to keep the revs at 4000 rpm (it drops about 800-1000 rpm per shift). If you are nailing it, shift around 6-7000 rpm and hold on!

    2000 RPM will kill a boxer.

    Even at 70 mph?

    I wanted to thank for everyones input. keep them coming.

  10. #10
    Motor Man
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    Quote Originally Posted by PGlaves View Post
    If it just started then the first thing I would do is run a dose of good (Chevron Techron or equivilent) fuel system cleaner through a tank of fuel. Even a slight bit of obstruction in the injectors can make it be too lean when it is at it's leanest.

    From there it becomes a matter of precise tune up, plugs, plug gap, balance, timing, valve adjustment, air filter, etc. If everything is perfect tune-up wise it probably won't do it. Some of the early bikes couldn't be cured, but if yours didn't surge and now does surge something has changed to cause it.
    I only run 93 chevron.
    I had the valves adjusted,balance, new irdium sparks and new air filter.
    I took it to the BMW Daytona dealership.
    And it still surges. I am more than likely going to take it to the Tampa Fl dealer and see if they can figure it out.
    I have put in equivilant cleaner.
    Im baffled.

  11. #11
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    Quote Originally Posted by aso432 View Post

    Even at 70 mph?

    I wanted to thank for everyones input. keep them coming.
    My r1200rt turns 4000rpm @ 70 mph
    2007 R1200RT
    2000 R1100rt sold @ 72,000
    Iron Butt #24605

  12. #12
    Ozzie Flyer
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    Bit surprised at 70mph for 2k Rpm. Doesn't sound right to me.
    regards
    Paul
    regards
    Paul
    Ozzie Flyer
    BE KIND TO HUMANS... THEY BITE

  13. #13
    God? What god? roborider's Avatar
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    Yes, even at 70 mph. 2000 RPM is only to be seen when you are getting going from first gear. Now, sometimes in a corner in 2d gear at 20mph (which is 2000 rpm) I will not downshift to first but rather lug a bit and climb out but that is transient.

    I cruise on the highway at about 4000 rpm. Maybe 3500 if it is flat and straight.

    And 70 mph in 6th gear would be about 3000 RPM I'm pretty sure. Hard for me to say since I don't lug it that way. But no matter. Regardless of speed, run at higher RPMs.
    Last edited by RoboRider; 10-02-2010 at 04:51 AM.
    Rob C. , Raleigh, NC
    '05 R12RT, R90/6
    2007 CBR600RR & 09 V-Star
    Suzuki DR 350

  14. #14
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    2000 rpm at 70?

    There is something wrong if that is what you are seeing. My '08 R1200RT is around the 4 grand mark too. I found somewhat of a confirmation for an '09 here...

    http://www.cleanmpg.com/forums/showthread.php?t=23857


    1 Rev of the crank = [(Pi)*(Rear Tire diameter in inches)]/[(Internal gear ratio)*(Transmission sixth gear ratio)*(Shaft Drive gear reduction)]

    1 Rev = [(3.142)*(24.8ÔÇØ)]/[(1.882)*(0.805)*(2.62)] = 19.631 inches. 1,000 RPM = (19,631 inches/min) * (60 min/hr) * (1 foot/12 inches) * (1 mile/5,280 feet) = 18.59 mph

    1,000 RPM = 18.6 mph
    2,000 RPM = 37.2 mph
    3,000 RPM = 55.8 mph
    4,000 RPM = 74.4 mph
    5,000 RPM = 92.9 mph
    6,000 RPM = 111.6 mph
    7,000 RPM = 130.1 mph
    8,000 RPM = 148.7 mph (Top speed is slightly > than 125 mph)
    Dean Stuckmann - Wisconsin
    2008 BMW R1200RT
    1982 Honda cx500 Turbo
    1983 Honda cx650 Turbo

  15. #15
    God? What god? roborider's Avatar
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    I just took my RT out. 6th gear at 70mph is 3500 on my tach. So the guys are right. 3500 should run smoothly although I don't ever run much below 4000. If your at 2000 RPM at 70, you DEFINITELY have a problem!

    I suspect you just got the numbers wrong. If you surge at below 3500 rpm, stop running it that way. If you surge at 3500 RPM and up, then you have an issue to investigate and it is well known and documented.
    Rob C. , Raleigh, NC
    '05 R12RT, R90/6
    2007 CBR600RR & 09 V-Star
    Suzuki DR 350

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