Speedometer fluctuating - BMW Luxury Touring Community
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post #1 of 10 Old Oct 28th, 2014, 8:18 pm Thread Starter
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Speedometer fluctuating

Today the speedometer on my 99LT started fluctuating +/- 5 or 10 miles/h and when I tried to use the cruise control it would not stay on probably due to the reading of the fluctuating speed. I checked the connection of the speed sensor on the final drive and there does not seem to be anything wrong there. Any idea what I need to look at next?

Alain

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post #2 of 10 Old Oct 28th, 2014, 8:23 pm
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Re: Speedometer fluctuating

Follow the cable out of the final drive to where it runs long the frame. You will find plastic ties. What sometime happens is the tie will cut the wire, fix the wire.

John Baker

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post #3 of 10 Old Oct 28th, 2014, 8:23 pm
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Re: Speedometer fluctuating

Locate the speed sensor on top of the rear drive and follow the wire(s) up to the first cable tie on the brake line. Peel back the covering at that point and repair the broken wires.

Dang John we gotta stop doing this!
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2009 K1300GT Red Rocket
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post #4 of 10 Old Oct 28th, 2014, 8:26 pm
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Re: Speedometer fluctuating

Quote:
Originally Posted by jzeiler View Post
Locate the speed sensor on top of the rear drive and follow the wire(s) up to the first cable tie on the brake line. Peel back the covering at that point and repair the broken wires.

Dang John we gotta stop doing this!
You are usually better than most of us at this...but once in awhile I remember a problem solution.
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John Baker

2005 BMW K1200LT
1979 Suzuki GS1000E
1978 Honda CB350
1975 Suzuki GT380
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post #5 of 10 Old Oct 28th, 2014, 8:30 pm
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Re: Speedometer fluctuating

Quote:
Originally Posted by johnbaker15 View Post
You are usually better than most of us at this...but once in awhile I remember a problem solution.
I was referring to the "synchronized" help effort since we posted the answer at the same time.
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John
2009 K1300GT Red Rocket
2009 R1200GS (Gone)
2005 K1200LT Ocean Blue Blue Wizard 110 K and counting...
2006 Bushtec Turbo+2 Spell
2004 330 Ci Convertable
K4AN

Have ridden a Motorcycle in all 48
But lack DE, MA, RI and CT with the 2005 LT

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post #6 of 10 Old Oct 28th, 2014, 8:32 pm
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Re: Speedometer fluctuating

Quote:
Originally Posted by jzeiler View Post
I was referring to the "synchronized" help effort since we posted the answer at the same time.
Well I posted as soon as I hung up from your call.

John Baker

2005 BMW K1200LT
1979 Suzuki GS1000E
1978 Honda CB350
1975 Suzuki GT380
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post #7 of 10 Old Oct 29th, 2014, 5:49 am Thread Starter
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Re: Speedometer fluctuating

Thanks folks for such a quick response. Awesome forum for an awesome bike. I will trace this wire this coming week-end.
I have to admit that I posted my question and then found out few threads on that same problem after a better search. I know, I know .... why did not I do a good search before posting my question.
Thanks again

Alain

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post #8 of 10 Old Oct 29th, 2014, 4:55 pm
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Re: Speedometer fluctuating

Hey, if everyone searched before they posted then we'd never get to meet anyone new around here.
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post #9 of 10 Old Oct 29th, 2014, 6:23 pm
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Re: Speedometer fluctuating

Actually the search function is not as good as the "related posts" function but you have to post to get to it.

John
2009 K1300GT Red Rocket
2009 R1200GS (Gone)
2005 K1200LT Ocean Blue Blue Wizard 110 K and counting...
2006 Bushtec Turbo+2 Spell
2004 330 Ci Convertable
K4AN

Have ridden a Motorcycle in all 48
But lack DE, MA, RI and CT with the 2005 LT

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post #10 of 10 Old Oct 30th, 2014, 9:56 am Thread Starter
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Re: Speedometer fluctuating

Yesterday evening I traced the cable, cut the few zip ties that hold it on the frame until I found out where the cable was damaged, just right underneath one of the upper ties. I cut it clean, soldered it back together, wrapped it with thermo shrinking tube and tied it back to the frame. Now the speedometer and cruise control are working again.

Thanks against folks
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Alain

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