Lph008 0 Posted July 14, 2017 Recently picked up a 2005 sportsman 800 efi. The issue it had when I bought it was really low idle and rpms wouldn't go over 4k. Top speed was only 30 mph and basically had no torque. What I found when I tore into it was. Throttle position sensor wires were broken. So I replaced the tps sensor and calibrated it, also I spliced in the upgraded obt harness for the tbap sensor and also replaced tbat sensor. It now idles almost perfect, still surges once in awhile. I also changed all fluids, replaced belt, clutch buttons seem to be good and also the clutch rollers. But I still have the same issue it has no power/torque. Rpms are currently hitting over 6k but it won't go over 30mph, acts as if that's the most it has lol Any help is appreciated Share this post Link to post Share on other sites Like what you are reading? Please help us by sharing this content.