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13-01-2020, 10:05 AM | #1 |
Registered User
Join Date: Jan 2017
Location: Colchester
Bike: S4r
Posts: 96
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Electronic Speedo faulty
Whilst out for my first ride of the year, after fitting new front tyre & brake pads, my Speedo started some very erratic behaviour. It started even before I rode off, the needle was swinging right around the dial. It did settle down, but never settled properly st constant sipped. It finally died altogether, with a few little flicks.
Initial thoughts are that it could be the connection at the back of the instrument cluster might be suffering from dampness, but any further suggestions welcome. |
13-01-2020, 10:47 AM | #2 |
Transmaniacon MOC
Join Date: Sep 2013
Location: Sutton In Ashfield
Bike: Multiple Monsters
Posts: 6,085
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The plug where the sensor plugs into the loom or the sensor itself.
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Roast Beef Monster! Termignoni and Bucci - Italian for pipe and slippers! S4 Fogarty, S4R 07T, 748, Series 1 Mirage |
13-01-2020, 11:02 AM | #3 |
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Join Date: Jan 2017
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Bike: S4r
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I was initially thinking of the plug into the back of the speedo, but thinking about it, any one of the connections could cause a problem.
Dave |
13-01-2020, 01:44 PM | #4 |
Too much time on my hands member
Join Date: Jan 2013
Location: Shipbourne
Bike: M900
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Since the front wheel has been out and the problem arose immediately after that I would look at what could have been disturbed in the process
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13-01-2020, 02:01 PM | #5 |
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Join Date: Jul 2003
Location: East London
Bike: Multiple Monsters
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the speedo on s4r gets its feed from the rear disc bolts passing a sensor on the rear caliper bracket, follow the wire to a connector under the r/h sidepanel. The symptoms you describe could mean the clocks themselves have failed though.
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13-01-2020, 02:22 PM | #6 | |
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Join Date: Aug 2011
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Quote:
Might be worth unplugging and removing the sensor and cleaning both the sensor itself and the contacts in the plug. |
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13-01-2020, 02:24 PM | #7 |
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13-01-2020, 02:37 PM | #8 |
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Bike: M1100evo
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If I recall correctly, the speedo sensor is a three wire type so this video may help if you want to test it. (You'll need a 12v dc power source.)
https://youtu.be/G1XzwZE6n8M To test yours, leave the unplugged sensor in situ on the bike, connect it up as per the video, and then rotate the wheel to check for a voltage output. |
13-01-2020, 02:51 PM | #9 |
Pleasantly surprised!
Join Date: Nov 2016
Location: Stoke on Trent
Bike: M900ie
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Fingers crossed the clocks aren't bust. They are hard to find and a million pounds plus shipping and VAT
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13-01-2020, 03:17 PM | #10 |
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If the clocks have failed will they still sweep on ignition, typically?
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Roast Beef Monster! Termignoni and Bucci - Italian for pipe and slippers! S4 Fogarty, S4R 07T, 748, Series 1 Mirage |
13-01-2020, 04:47 PM | #11 |
Too much time on my hands member
Join Date: Jun 2007
Location: Forest Of Dean
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Have had a clock set fail the initial sweep didn't, or it did a judder.
Have had a sensor of a similar type fail, the sealing had failed and the copper wires corroded and broken. For the clock set I got hold of another single clock and swapped out the stepper motor. For the sensor I got another.
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14-01-2020, 07:09 AM | #12 |
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Thanks for all the replies & advice. more or less what I had in mind, clean & check all the connections, WD40 & fingers crossed that it's not a faulty speedo.
I'll update once I've had a chance to investigate. On a similar vein, I unplugged both the cooling fans when I removed the radiator recently, now neither of them come on, I had the temperature right up to 120, seems unlikely that they should both fail, could I have affected the sensor just by unplugging them? Dave |
14-01-2020, 09:03 AM | #13 |
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Join Date: Jul 2003
Location: East London
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more likely something didn’t get plugged in right
http://www.ukmonster.co.uk/monster/s...82&postcount=3 |
14-01-2020, 04:35 PM | #14 |
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Join Date: Jul 2006
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Hi, if it does turn out to be the clocks I think I can help you out, so just PM if the need arises. Bitza
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Bitza |
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