At the end of last season I had the same issue and found some holes in my crank case my sled was idling at 4k now the other day I jumped a snow drift and came down really hard. My shock seals toast. When I went to slow down the sled stayed idling high. I inspected everything and my throttle bodies seemed loose so I tightened them and its still running the same. I'm not finding any air leaks could the hit have thrown my tps off