|Posted on Sunday, March 15, 2015 - 09:56 pm: ||
I feel like Iím on the trail of this problem but I donít have it yet.
It all started when the speedo on my xb9s became erratic. It would read 20-30 mph on the freeway and on the street the needle would go up to 20 mph and then fall back even as I was accelerating.
Everything else worked fine. Both needles swept the dial when the key was turned on. The odo, trip odo, tach, clock. . . all were fine.
After scanning many post here I decided the speed sensor might be the problem. Iím fortunate enough to also have an xb12s (I love Buells!) so I swapped that sensor over. No change. Same exact symptoms.
So I figured the unit itself was shot. But before forking over $$$s I swapped the instrument unit over from the XB12s. Same exact symptoms! BTW, the speedo on the xb12s works fine when itís on that bike.
So, today I poured over more posts and decided to track the wires from the speed sensor up to the instrument unit plug-in. For WHITE, the ohmeter needle slammed over. Continuity. Same for black/white (ground?) Continuity.
Then things got weird. The third wire coming from the speed sensor is red, and it plugs into a RED wire on the connector. But when I got up to the plug-in for the instrument unit, the red wire goes into a ďblankĒ hole? There is no contact strip inside. The only wire close to red that had a ďliveĒ connector was pink-ish and when I plugged into that the ohmmeter needle went about half way.
As I rechecked the Buell shop manual I saw mention of a green/yellow wire so I plugged into that one. The needle moved about ľĒ and stayed there. . .
So thatís where I sit, baffled!
Any help greatly appreciated!
|Posted on Monday, March 16, 2015 - 11:12 am: ||
Have you checked and cleaned your grounds? There also could be some pinched or chaffed wiring by the steering neck that may be causing you trouble.