Question about 1999 Yamaha YZF-R1

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99 R1 is sitting a 8.5 rpm on trouble code, any ideas?

Was going nutsz then changed the batt. now only showing the 8.5 rpm. Im lost as all ...

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  • rsrbob May 11, 2010

    Could you be more specific about what you are seeing? I suspect you are getting a self diagnostic code, where the tach indicates a certain RPM for a few seconds, then reverts to engine RPM, then back to the code RPMs. There are 3 systems monitored by this. The EXUP, TPS and Fuel level sensor. If there is a problem with one of those systems, the self diagnostic feature will trigger the tach needle to send the code by holding a certain RPM no matter what RPM the engine is at, then returning to engine RPM.



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In the owners manual it describes some fault codes and it states that if your tacho sits on 8000rpm it is a fuel level indicator fault.
You've probably had it fixed by now but just in case someone else has the same problem I thought I would share what I think it could be.
Hope this might help.
Regards Duane

Posted on May 02, 2010


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