not my swim suit, speedometer, I swear I don't even own a speedo! I was JRA yesterday and I noticed the speed jumping up and down, I ran it up a bit and back to normal, for a while. Then it starts to pop and sputter slightly at a steady throttle, check engine light comes on and then the neutral light pops on for a while. All this as I'm heading home at city speeds, no high speed pass, burnouts or hot rodding. I did however do some clutchless shifting out on the county roads. Could this be a speed sensor? Is there a sensor for gear position that could be at fault?