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Thread: Fuel gauge reading low on R1150RS

  1. #1
    ONE LESS HARLEY 04r1150rs's Avatar
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    Fuel gauge reading low on R1150RS

    On a 2004 R1150RS, I'm looking for any info regarding, inaccurate fuel gauge readings. Just topped up and the RID doesn't show completlely full, and low fuel light come on early. Just wanting to see what others might have to say about this.
    Richard
    2004 R1150RS
    1984 R80 G/S
    2003 Suzuki DRZ 400S

  2. #2
    Registered User m_stock10506's Avatar
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    First and easiest thing I'd do is disconnect the electrical connector under the fuel tank. Clean the male and female sides with electrical contact cleaner. This should reduce corrosion at the connector and reduce resistance at the plug. If your fuel gauge isn't damaged inside the tank then this should fix the low reading.
    Michael Stock, Trinity, NC
    R1100RT, R100, R60/6

  3. #3
    Registered User GTRider's Avatar
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    Quote Originally Posted by 04r1150rs View Post
    On a 2004 R1150RS, I'm looking for any info regarding, inaccurate fuel gauge readings. Just topped up and the RID doesn't show completlely full, and low fuel light come on early. Just wanting to see what others might have to say about this.
    A very common situation after servicing fuel filters on these bikes. The fuel gauge uses a float arm that comes out with the pump plate that holds pump and filter. The arm can easily get bent and hang up either on the side of the tank or on the internal hoses. If the gauge is consistently off the only fix seems to be pulling the pump plate again and adjusting the float wire, but knowing which way and how much to adjust is tricky.

    Best,
    DG
    DGerber
    1983 R80ST 1984 R80 G/S-PD 2004 K1200GT w/Hannigan S/C 2010 K1300GT 2018 R1200GS
    BMWMOA#52184, AMA#271542, IBA#138

  4. #4
    Registered User roger 04 rt's Avatar
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    Quote Originally Posted by 04r1150rs View Post
    On a 2004 R1150RS, I'm looking for any info regarding, inaccurate fuel gauge readings. Just topped up and the RID doesn't show completlely full, and low fuel light come on early. Just wanting to see what others might have to say about this.
    The common ground wire for pump and gauge causes the inaccuracy. Here's the fix in a nutshell: http://forums.bmwmoa.org/showthread....Fix&highlight=.

    And if you don't have a second load relay on your twin spark: http://forums.bmwmoa.org/showthread....ark&highlight=.

  5. #5
    Pepperfool GSAddict's Avatar
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    What Roger says^^^^^
    '
    Ufda happens..........

    Need your R11xx Hall sensor rewired? PM me.

  6. #6
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    Same for R1100RS?

    Does most of what's above apply to R1100RS's? I don't have a fuel gauge or RID on my '94 but my low fuel light is constantly on.

  7. #7
    Pepperfool GSAddict's Avatar
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    Quote Originally Posted by etinch View Post
    Does most of what's above apply to R1100RS's? I don't have a fuel gauge or RID on my '94 but my low fuel light is constantly on.
    No the ground issue applies to the RID bikes.
    You will need to check if the tank internal switch is functional and that the float is not jammed.
    '
    Ufda happens..........

    Need your R11xx Hall sensor rewired? PM me.

  8. #8
    ONE LESS HARLEY 04r1150rs's Avatar
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    thanks, for the link and I'll check the ground lead, hopefully it's that easy
    Richard
    2004 R1150RS
    1984 R80 G/S
    2003 Suzuki DRZ 400S

  9. #9
    ONE LESS HARLEY 04r1150rs's Avatar
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    WOW, that was easy, cleaned the terminals and full bars on the RID!!!!! Thanks 1000 times over!!!
    Richard
    2004 R1150RS
    1984 R80 G/S
    2003 Suzuki DRZ 400S

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