Question about 2000 Aprilia RS 125

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Speedo aint telling right speed

Can you tell me why my speedo might only stop at 60 when my bike is doing more

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Take ur speedo off and undo the two screws on the back off it and give it a good clean use wd40 and out back together thts it sorted

Posted on May 08, 2010


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1992 Subaru legacy wagon will not shift up from first gear. it is an AT.

run the fault but all you describe is operated from the VSS sensor ( vehicle speed sensor)
it tells the cruise control the vehicle speed , tells the TCM the vehicle speed so that ratios can be changed, activates the speedo,and will report with a check engine light to report a transmission problem
run the fault codes first

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Speedometer, turn signals and horn quit working, speedometer light doesn't work

Hi, Brian I do not know what type of bike you have but this is what I tell all my Harley friends with electronic speedometers the vast majority of speedometer issues is caused by the speed sensor and or the wiring, a faulty speedometer sensor and or connection will automatically interrupt proper turn signal and flasher operation. On Sportsters the sensor is located on top of the engine case behind the rear cylinder, on big twins, it's located on the right side of the transmission case between the starter end cap and the transmission top cover. Remove the bolt/***** that secures the sensor and lift the sensor out of the case. Inspect it for damage and contamination, if there appears to be no damage wipe the end of the sensor clean and reinstall, you can go for a short quick test ride to see if the speedo is working. If the issue still exists grab your test light and unplug the harness connector from the sensor, check for power (red wire) and ground (black wire) continuity coming from the speedo, there is also the connector that plugs into the speedometer, also, look for corroded, broken or loose pin/sockets. If everything checks out OK then replace the speed sensor. Good luck and have a nice day

Mar 28, 2016 | Motorcycles

2 Answers

What diifference will it make to my speedo reading if my front tyre is size 120/60 ZR17 instead of 120/17 ZR17 on m1993 suzuki rf600r bike

If I am reading the tire size right you are dealing with a different width and not circumference. If in fact it is width it want make any difference, however, if it is circumference then if the tire is smaller the transmission is going to have to turn faster to get 50 MPH or any speed. The speed of your car is measured at the back of our transmission. Smaller tires will make the speed-0-meter read fast and larger tires will give you a slow reading. This is the one that will get you in trouble. With a larger tire and you meter reading 50 you might be doing 60 or more. You can figure the speed of any tire on a car just take the circumference of the tire [how many inches it travels in one revolution] and divide it into 5280' for miles then Multiply it by T=time taken to travel distance then figure in the RPM's and drive your self crazy trying to figure it out.
Again as I said if they are the same circumferance then your speed -o- meter will not change.
Col. Dana Gillespie

Jul 05, 2014 | 1993 Suzuki RF 600 R

1 Answer

After cleaning and polishing my '01 Fat Boy & checking that everything was working b4 ride. My SPEEDO stopped working, (black out #1) on the ride. Pulled over to check it out. At the same time, I...

The problem is most likely related to the speed sensor down on the tranny. Most likely it got wet and either shorted out or needs cleaned, but most likely it needs replaced, Do you have a Factory Manual as well as the Electronic diagnostics manual. You can put the bike into diagnostic mode and it will tell you what the problem is. If it is the speed sensor that crapped out . That would cause the speedo to illuminate, but not read anything. Also, it would cause the Speed/RPM cancel function to fail. Does the speedo illuminate? If not, you either have a dead speedo, or a short to its power. The only other thing is the ignithion switch, if water got into this and caused a short that would also cause this issue, try wiggling it around and see if it makes better contact and see if that helps, might just have to let it sit in the sun for a while and dry out and left over moisture. I assume you checked all the fuses?

A couple of questions though. Do the turn signals cancel when you bank turn the bike? There are two ways that the bike cancels the signals. Either via Speed/RPM ratio, or via the bank angle sensor inside the TSSM (Turn Signal / Security Module).

Jul 03, 2011 | 2001 Harley Davidson FLSTF - FLSTFI Fat...

1 Answer

I need to know what the range of tires I can run on my 2005 Ford Freestar SEL 225/60/16 is what is in the door can I run 205/60/16 studded tires for winter

Yes you can but your speedo reading will be out of zink so dont drive by the speedo
Get someone to drive in front of you and check the speedo in your car at 30 40 50 60 and mark it on your speedo with a black pen
tell them at the speeds to flash l/h/indecator once that will be the speed to mark off on the speedo.

Sep 28, 2009 | Ford Freestar Cars & Trucks

1 Answer

TS125r power

According to my experience if you bike has a power valve and slows down as soon as you pass 60 then you will need to disconnect it from the speedo..What I mean is inside the speedo if you remove it you will see something like a fuse which needs to be carefully disconnected.I am telling this based on my experience with a dt125r

Jun 16, 2009 | Suzuki TS 185 Motorcycles

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Help wiring up digital speedo to a 2004 dyna sport.

Hi Larry, I would give the nice folks at Diamond Digital a call. Good luck

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3 Answers


the connection on your front wheel where the speedo cable connects the link between the cable and gear more than likely broke you will need new speedo cable it happened to my cruiser

Feb 18, 2009 | 2007 Yamaha XT 125 X

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