Gaul

After reading all the posts it convinced me to take a closer look at my failed speed sender unit. What I initially thought was an acceptable condition plastic drive coupling probably really is the root cause to all my failures. I looked at how loosely the drive nut on the countershaft sprocket fits into the plastic drive couple and it appears that the drive probably is slipping in the plastic couple. I'll feel like a real idiot for replacing 5 sensor units on my bike if this was the real reason for my failures, not to mention I'm out of about $600.00 to replace all the units I thought were broken.

Hello. I am new to this forum. I am about to replace the speed sensor on my 1998 VFR800 for the fifth time in 97,000 miles. I have never worn the plastic drive nut out; the units just plain fail. I have done all the trouble shooting described in my Honda shop manual and everything consistently points to the speed sensor. Every time I replace the sensor the speedometer works like new again. I contacted Honda after the third unit failed and they told me to "take it to the shop". I am at my wit's end with this thing. As the miles add up on this bike the speed sensors last less and less miles. This last sensor is failing at about 3,000 miles. I can't keep replacing the sensors. Any help or advice is greatly appreciated.