the rev counter on my R1 clock flicks between 0 and 8250 RPM when I switch the ignition on. I thought this meant that I had to adjust the throttle position sensor. I losened the sensor and turned it through its whole range with no effect. I remember reading that this adjustment was needed after the TPS was disconnected and so I disconnected it. the rev counter went from 0 to 3000. on reconnection it went back to 8250.

What does this mean?
How do I fix it?

Its because the EXUP kaboodle is missing, the proper way of fixing it is to either leave the EXUP servo in the loom or get a box of tricks to fool it, but I believe you can reduce / eliminate it just by joining a couple of the EXUP wires together, although Im not sure which as I didnt need to do it on mine. Im sure Paul R or Jim G will know

ive heard the r1 clocks rpm blips to show an error if the exup servo motor is missing, but dont know anything more than that..

I had to use a resistor to trick it.
It was for the fuel sender.Might be that.

the EXUP is fitted and does buzz on key off. I guess its the fuel sender then as I don't have one for the bike loom. Any idea what resistance I need?

Yep, it's the fuel sender. I can't remember off hand what resistance is needed, but I'll try to have a look tonight. 10k rings a bell though....

You could put pretty much anything in there if I remember rightly, just so long as it's not either short or open circuit as either of those states will cause the fault code.

Hope this helps....


p.s. Did you sort the clocks back-light problem?

quote:

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Originally posted by Coose
p.s. Did you sort the clocks back-light problem?

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Yep, I used a 10k and it works fine....

Glad the back-lights work!

Tried a couple of resistors 33k was too big but 2.2k worked fine. Its funny but in a whole selection of resistors, I had nothing between 2k2 and 33k. Again, many thanks.