Speedo or speedo cable problem

**Tigadee** · 19th January 2012, 20:36

What does it mean when the speedo suddenly just goes to zero while moving.

No other problems - no engine stutter or changes - just the needle falling to zero, and then intermittently goes back up to speed, then drops to zero again.

**Lelitu** · 19th January 2012, 20:45

Originally Posted by Tigadee

What does it mean when the speedo suddenly just goes to zero while moving.

No other problems - no engine stutter or changes - just the needle falling to zero, and then intermittently goes back up to speed, then drops to zero again.

it's fucked somewhere?

start by checking the cable is intact, not pinched, crimped, or just plain snapped ect,
if the inner cable is fine
then have a look at the speedo pickup and gearing mechanism, is that jammed, toothless or not making proper contact?

**FJRider** · 19th January 2012, 20:46

Depends ...

If it has the speedo driven by way of a cable off the front wheel, or by a sensor from inside the gearbox (or similar)

**bogan** · 19th January 2012, 20:52

Assuming the odo has stopped as well, I'd undo the cable from the speed, then turn the front wheel to see if the cable turns, which lets you know whether it is speedo side or cable side.

**DrunkenMistake** · 19th January 2012, 20:57

Sounds like a fucked cable,
My old 400 done the same, was a case of just replacing the cable

**FJRider** · 19th January 2012, 21:47

Sometimes the square drive at either end of the cable gets worn.

Or the (female) drive at the wheel is worn/slipping.

Or the (female) drive receptical in the speedo is worn/slipping.

If it is intermitant ... most likely either or both. (Check cable is intact first)

You can check if its the speedo by putting the lower end of the cable drive in a drill ...

**nzspokes** · 19th January 2012, 21:52

I had the same last week. Cable had broke but sometimes it would work. New cable and all sweet now. Lucky honda only has a couple of different cables for all there bikes.

Next job is sorting out the seventh gear selector issue and it will be mint.

**Tigadee** · 19th January 2012, 23:27

The thing is it's only doing this after the bike mech worked on it today. Possible he may have knocked something loose?

Thanks for the helpful pointers, BTW.

**FJRider** · 20th January 2012, 05:51

Originally Posted by Tigadee

The thing is it's only doing this after the bike mech worked on it today. Possible he may have knocked something loose?

Thanks for the helpful pointers, BTW.

Just check first if the cable is fitted tight at BOTH ends ... it may well be just loose.

**Tigadee** · 20th January 2012, 07:16

This morning: Now the speedo doesn't work totally at all.

Thanks FJR, will do...

**nzspokes** · 20th January 2012, 07:41

Buy a new bike....

**MSTRS:Me** · 20th January 2012, 07:53

Perhaps you can tell us if it's cable or electronic?
Is there a big cable off the back of the speedo housing, that goes to the left side of the front wheel hub? Or not.

**Tigadee** · 20th January 2012, 09:01

Originally Posted by MSTRS

Perhaps you can tell us if it's cable or electronic?
Is there a big cable off the back of the speedo housing, that goes to the left side of the front wheel hub? Or not.

Cable... Yes, there is and it was totally out.

All good now, thanks all!

Originally Posted by nzspokes

Buy a new bike....

Like you?

**Tigadee** · 20th January 2012, 21:04

:facepalm: Happened again this afternoon... I think the cable won't stay in even though I screwed it back in securely.

Some duct tape, maybe? :confused:

**ducatilover** · 21st January 2012, 01:39

Have you tried moving the cable by spinning the front wheel? Or undoing it at the speedo and wheeling the bike, I'd try turn it by hand though, if it's fucked at the wheel end it'll turn (or snap

)

Otherwise your needle has turned limp. My money is on cable.

May we ask what the mechanic did?