Speedo flicker - BMW Luxury Touring Community
 
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post #1 of 7 Old Sep 2nd, 2010, 10:41 pm Thread Starter
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Speedo flicker

Hi all
I have a problem with the speedo needle fluctuating up to 40kph while the engine is idling, I can actually see the odometer spinning does any one have any clues, I have just replaced the battery so its not that, it has been doing it for a fair while and mainly when I first start the motor

Regards Linton
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post #2 of 7 Old Sep 3rd, 2010, 12:43 am
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Smile Re: Speedo flicker

Hi Axel, seem to remember an issue with the feed cable from the rear drive. Check for abrasion near the brake line support. HTH

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post #3 of 7 Old Sep 7th, 2010, 12:50 am
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Cool Re: Speedo flicker

Quote:
Originally Posted by Hilton
Hi Axel, seem to remember an issue with the feed cable from the rear drive. Check for abrasion near the brake line support. HTH
"Axel" ??? is this a new spelling for our friend down south?hahhah

yep the old abraided speedo sensor cable eminating from the rear drive...I shoulda spliced mine with an extra bit of cable when I was changing out the olde rubber brake lines and had the RHS rear side panel off. Started to flicker, then completly died for a month or two (means yer odometer is not ticking over though)....eventually I got to place the cable in a position that the conductors are made, so the speedo works fine, but as you can see from the pix the stress on the cable has even broken the outer sheath protection....just another job to do <sigh>

cheers
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post #4 of 7 Old Sep 7th, 2010, 2:09 am Thread Starter
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Re: Speedo flicker

thanks guys
I have cut all the plastic ties off and had a look at the cable but didnt see anything wrong, riggled the cable with the bike idling over nada!! oh well maybe the new battery has done something

Regards Linton
From the land of Kangaroo's and Koalas
and no koalas are not Bears



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post #5 of 7 Old Sep 7th, 2010, 2:38 am
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Re: Speedo flicker

Interesting.... I had that problem on my K75RT for a while, trying to think of what I did that caused it to start, and then what I did to get it to stop!
If I remember I'll post back... but it was a few years ago now...

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post #6 of 7 Old Sep 7th, 2010, 4:27 am
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Re: Speedo flicker

Quote:
Originally Posted by Axle
thanks guys
I have cut all the plastic ties off and had a look at the cable but didnt see anything wrong, riggled the cable with the bike idling over nada!! oh well maybe the new battery has done something
One other item to check is the sensor atop the final drive unit. Undo the screw and wiggle out the black sensor; clean the tip and reinstall. Check result.

Good luck on finding the gremlin, Axle.
Edit: actually, I don't think a frayed cable NOR a dirty sensor should affect the odometer and make it spin while engine is at idle. Usually the bad result of either is evident when there is up/down movement of the drive train while riding. Check the sensor anyway - just prolly not the cure.

Last edited by Dick; Sep 7th, 2010 at 4:44 am.
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post #7 of 7 Old Sep 8th, 2010, 8:04 am
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Re: Speedo flicker

Linton, just remembered that my problem was caused by my mobile phone at the time (Nokia)... I had it mounted in a holder on the bike dash, and for some reason when I was sitting at the lights waiting the rev counter would start playing up, and the km meter actually started running backward !!... so I guess some sort of electrical interference causing it? Never did figure it out.... had to remove the phone holder.
hope you have better luck.

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