I just picked up a 2000 Banshee. The quad is bone stock. It’s even got the original tires still(lol). It ran great when I picked it up but by the time I got home, it’s was running pretty weird. Didn’t seem like it wanted to rev consistently, it kind of cut in and out.
After digging through this forum, I found that I should dig into the TORS. Sure enough, it was still intact. So I unplugged it from the tiny black box and clipped the wires coming out I’ve the throttle assembly. The quad seem to rev great after that. I never had a chance to ride it, until this afternoon. It ran great after it warmed up and then a couple minutes into the ride it stopped reving again. Here’s a link to a video of what it’s doing.
Does it seem like it could be the parking break sensor?