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Thread: 2002 R1150RTP engine shuts down

  1. #1
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    2002 R1150RTP engine shuts down

    For the last couple weeks my 2002 R1150 RTP will lose power at freeway speed’s for less than a second the engine shuts off and then comes right back it has done this multiple times. Last week It shut down and would not restart. It was 97° out. But 20 minutes later it fired up and ran for about five seconds and then shut down. Any ideas what might be the cause

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    Registered User tangoalpha's Avatar
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    Quote Originally Posted by BILLK75 View Post
    For the last couple weeks my 2002 R1150 RTP will lose power at freeway speed’s for less than a second the engine shuts off and then comes right back it has done this multiple times. Last week It shut down and would not restart. It was 97° out. But 20 minutes later it fired up and ran for about five seconds and then shut down. Any ideas what might be the cause
    I own a 2002 R1150 RT and I’m no expert on the subject, however what you’re describing sounds like a fried Hall Sensor. I’m sure GSAddict and others will be along shortly to offer their thoughts. There are other possibilities as well to consider, but given the year of your bike and that the Hall Sensors are a known problem on our vintage RT’s it seems likely that is your issue.


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    Pepperfool GSAddict's Avatar
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    Sounds like Hall sensor symptoms, is it a higher mileage bike?
    2002 is the year that the HES wiring was upgraded, you may have the old style wire or not.
    If it's the old style I can help you.
    Here is how to tell.
    Attached Images Attached Images
    '
    Ufda happens..........

    Need your R11xx Hall sensor rewired? PM me.

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    Registered User dieselyoda's Avatar
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    I would start at the fuel filter.
    1997 R1100RT, 1981 KZ 440 LTD, R80RT, R90/6 sidecar, K1100RS,1983 K100RS (Cafe now)

    “The major civilizing force in the world is not religion, it is sex.”

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    1150rt

    Quote Originally Posted by GSAddict View Post
    Sounds like Hall sensor symptoms, is it a higher mileage bike?
    2002 is the year that the HES wiring was upgraded, you may have the old style wire or not.
    If it's the old style I can help you.
    Here is how to tell.
    It has a new style hall sensor, it was installed about a year ago. It was a used sensor. Will the sensor act up under dry conditions?

  6. #6
    Day Dreaming ... happy wanderer's Avatar
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    Quote Originally Posted by BILLK75 View Post
    It has a new style hall sensor, it was installed about a year ago. It was a used sensor. Will the sensor act up under dry conditions?
    The hall sensors are semiconductor devices. When they get old or are exposed to excessive heat it is not uncommon to experience flaky behaviour such as you described. Heat and moisture creates steam in there which gets into the wiring when the wire sheathing is breaking down and not insulating properly anymore is on failure condition.

    The Hall Sensor plate lives in a very high heat area so yes, even though it is dry it can fail just from the heat and then resume working after it cools down. But the circuit in the hall sensor is damaged and will not be reliable.

    Note that bad or failing coils can exhibit the same symptoms.
    MJM - BeeCeeBeemers Motorcycle Club Vancouver B.C.
    '81 R80G/S, '82 R100RS, '00 R1100RT

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    Pepperfool GSAddict's Avatar
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    Quote Originally Posted by BILLK75 View Post
    It has a new style hall sensor, it was installed about a year ago. It was a used sensor. Will the sensor act up under dry conditions?
    The sensors can but it is very rare.
    Scan with a GS 911 and see if it left a stored code.

    I have had the odd sensor fail when heated on my rotating tester only to work again upon cooling. Maybe 2 in all the units I've done.
    '
    Ufda happens..........

    Need your R11xx Hall sensor rewired? PM me.

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    Quote Originally Posted by GSAddict View Post
    The sensors can but it is very rare.
    Scan with a GS 911 and see if it left a stored code.

    I have had the odd sensor fail when heated on my rotating tester only to work again upon cooling. Maybe 2 in all the units I've done.
    This sounds similar to my issue. Tomorrow I'll try testing the HES after heating with a heat gun.

    https://forums.bmwmoa.org/showthread...ng-temperature

  9. #9
    Registered User dieselyoda's Avatar
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    You described a fault we had in every service truck we had back in the '90's and it was the fuel pump every time.

    The defining diagnosis was to kick the fuel tank, not an easy task in the winter, but every single time, the truck ran until it quit again, got kicked again and then into the shop where we would see another one and ask for "light duties".

    They never came in with an empty tank of fuel.
    1997 R1100RT, 1981 KZ 440 LTD, R80RT, R90/6 sidecar, K1100RS,1983 K100RS (Cafe now)

    “The major civilizing force in the world is not religion, it is sex.”

  10. #10
    MOA #24991 Pauls1150's Avatar
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    Possibly a dying battery starting to hiccup.

    Is the electrical connection to the gas tank (right side, below the rear of the tank) secure?

    Looking for more definitive clues: When it shuts off, do you still have lights? And specifically, does the RID stay on or go blank?

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    Update

    Quote Originally Posted by GSAddict View Post
    The sensors can but it is very rare.
    Scan with a GS 911 and see if it left a stored code.

    I have had the odd sensor fail when heated on my rotating tester only to work again upon cooling. Maybe 2 in all the units I've done.
    I replaced the Hall sensor and the bike ran fine. Took it for a short ride and after about five minutes it died. Preliminary testing shows no spark. Any suggestions

  12. #12
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    Quote Originally Posted by BILLK75 View Post
    I replaced the Hall sensor and the bike ran fine. Took it for a short ride and after about five minutes it died. Preliminary testing shows no spark. Any suggestions
    Here's a WAG - test your coil.

  13. #13
    Pepperfool GSAddict's Avatar
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    Quote Originally Posted by BILLK75 View Post
    I replaced the Hall sensor and the bike ran fine. Took it for a short ride and after about five minutes it died. Preliminary testing shows no spark. Any suggestions
    Coil
    '
    Ufda happens..........

    Need your R11xx Hall sensor rewired? PM me.

  14. #14
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    Quote Originally Posted by BC1100S View Post
    Here's a WAG - test your coil.
    This may be a stupid question but how do you test a coil.

  15. #15
    Registered User m_stock10506's Avatar
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    Quote Originally Posted by BILLK75 View Post
    This may be a stupid question but how do you test a coil.
    Not a stupid question, but tricky to do. You can check resistance across the primary and the secondary terminals of the coil. But, this will only prove a problem if the coil has failed completely. My own experiences with bad coils has been they only failed when hot, after running for a while. They cool down and the bike starts again, until eventually it won't and you end up stuck somewhere.

    You could take a chance on a used coil on eBay. Buy a new one. Borrow a coil from a friend and see if the problem goes away.
    Michael Stock, Trinity, NC
    R1100RT, R100, R60/6

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