Speedo gremlins

[tutton]

Heres the outline,
Crashed into the back of a audi ~30mph
Bikes slowly been put back together, battery seems real healthy still as it was a new one before crash.

When ignition is turned on all the lights etc all working and plugged back in, but the rev gauge seems to be moving itself from bottom needle stop to around 8k when it wants to, no real pattern, if the bike is cranked and it starts itll drop to where it should be, but then ocasionally still go awol.

any suggestions please?
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Past: '05 Peugeot XPS '99 Aprillia RS125 '94 FZR600R
Current: '02 ZX636 A1P '51 CCM R30

[Noxious89123]

So it's Tacho gremlins then, not the speedo Some bikes use the Tacho to display errors. Which number the needle stops at before dropping back down tells you what the problem is.

This is on the FZR right? Does it always whizz round and stop at 8k, or does it vary? If it's generally being crazy it's more likely just a fcked tachometer.

EDIT: Don't know if your bike will be the same as a thundercat, but check this out; LINKY

[tutton]

hmm,
its one of those bikes that never moves until the bikes actually running, dosnt do the cool whizzy thing when ignition started.
Could be fuel level sensor fault, altho it was doing it with the old tank and sensor, it now has another tank and sensor on,
Altho the tanks are both virtually dry, i think ill put some gas in and see if it sorts, if not i know theres wiring issues still.
cheers
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Past: '05 Peugeot XPS '99 Aprillia RS125 '94 FZR600R
Current: '02 ZX636 A1P '51 CCM R30

[steveh]

had this issue with my old thundercat, make sure your tank sensor is plugged in


i did it a couple of times, worth a check.
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Current : 06 Zx10r, 07 Wr450f SM, 74 850 norton commando, 63 bsa b40, 1962 Triton 650, 67 Triumph Tr6r, 1955 Triton 750, 1978 TY250E.

[tutton]

Ok mate, will do maybe the contacts arnt very nice, we only fitted it up quickly,
now i think back im not sure if the connector block fitted that snugly,
ill check on tuesday cheers for the help guys
____________________
Past: '05 Peugeot XPS '99 Aprillia RS125 '94 FZR600R
Current: '02 ZX636 A1P '51 CCM R30

[Noxious89123]

The rev counter on my bike doesn't do the whizzy startup thing either, but it will still show an error code if there is a problem

The ensor on my bike has 2 connectors, like spade connectors. So it is possible to connect it the wrong way round.

Is it possible that you coul have done this one your bike, or does it have a proper block connector? Contacts corrded maybe?
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'06 Honda CBR125RW-6 ~ '00 Honda CBR600F-Y ~ '07 Honda CBR600RR-7 ~ Bikeless
'53 Ford Ka 1.3 ~ '03 Vauxhall Astra SRi 1.8 ~ '52 Vauxhall Astra SRi 2.2 ~ '53 Vauxhall Astra GSi

[tutton]

One block connector under in the tank space, so itll only go one way, either gack terminations, or i aint pushed it in tight enough me thinks.

Will try to update on tuesday when i go to fix it!
____________________
Past: '05 Peugeot XPS '99 Aprillia RS125 '94 FZR600R
Current: '02 ZX636 A1P '51 CCM R30