SLED WON’T IDLE OR GO INTO REVERSE

SLED WON’T IDLE OR GO INTO REVERSE

We went for a great ride today and about half way through the day my Pro RMK picked up a ruff idle and would die in about 10 seconds. Then I noticed it wouldn't go into reverse. Other than that it ran just fine. Does anyone have any ideas on what I should be checking? I don’t have to go back to work until next Tuesday and with it being Christmas week end the dealer won’t we around.

I unplug all the wires and plugged them back in and ever thing worked fine in the shop and the next day it worked until I stopped and it wouldn’t idle or go into reverse. So I went ahead and road it aanyway and that wasn’t the best idea of the day.
We made it 35 miles from the trucks and is started to drop a cylinder in the mid-range, by the time I made it back to the trail is would run full throttle and then just about die then hit on 2 again and take off like a shot, then just barley pull itself on flat ground. I made it back to the parking lot under my own power. Then I had to ride it 15 mile to town and about 5 miles from town it started to run perfect, 8250 and not miss a beat. Of course there was never a check engine light or any light that came on, it got hauled off to the dealer.