09 Nytro idle issues

[Gilby]

Hello all. I have been having an issue with my Nytro pretty much since I got it at the start of the '18 season. I was hoping to get some information from you wizards on here. First day on the sled was great but returning home that night, sled started acting funny. Guy in front of me needed a hand with his sled so I left mine running and noticed the headlight started to dim after about 5 minutes. Ever since then, the sled has had trouble idling when warm. About 30-45 minutes after cold start, the sled will die when letting off the throttle. It can be a bit unpredictable at times showing no issues and others I cant let off the throttle or it dies. I am not the most savvy (clearly) under the hood so I took it to a shop before last season. They swapped out the plugs but said the motor is carboned up and might need a new throttle body assembly. Fuel pressure is good(48psi), compression on all cylinders is good (185 even) but motor is carboned up and codes 13,15,21,22,25,30,84,85 came up. They replaced plugs and recommended I really give it the goods last season to see if it clears up. I had one good day last year where I barely had any issues but other than that, constant stalling. I have an appointment with an actual snowmobile repair shop next month but trying to get a jump on the season because I want to ride the damn thing. I can provide additional information but I didn't want this to be any more long winded than it already is. Thanks in advance. Link for shop info given to me https://imgur.com/a/KT7XH3M

 

[MrSled]

Hello all. I have been having an issue with my Nytro pretty much since I got it at the start of the '18 season. I was hoping to get some information from you wizards on here. First day on the sled was great but returning home that night, sled started acting funny. Guy in front of me needed a hand with his sled so I left mine running and noticed the headlight started to dim after about 5 minutes. Ever since then, the sled has had trouble idling when warm. About 30-45 minutes after cold start, the sled will die when letting off the throttle. It can be a bit unpredictable at times showing no issues and others I cant let off the throttle or it dies. I am not the most savvy (clearly) under the hood so I took it to a shop before last season. They swapped out the plugs but said the motor is carboned up and might need a new throttle body assembly. Fuel pressure is good(48psi), compression on all cylinders is good (185 even) but motor is carboned up and codes 13,15,21,22,25,30,84,85 came up. They replaced plugs and recommended I really give it the goods last season to see if it clears up. I had one good day last year where I barely had any issues but other than that, constant stalling. I have an appointment with an actual snowmobile repair shop next month but trying to get a jump on the season because I want to ride the damn thing. I can provide additional information but I didn't want this to be any more long winded than it already is. Thanks in advance. Link for shop info given to me https://imgur.com/a/KT7XH3M

Could need a valve adjustment. How many miles on it?

 

[MrSled]

I would also follow the harness up over the tank and look for a rub thru.. thats a lot of codes to go at once ...my guess is a short.

 

[maim]

ground blocks?

 

[Gilby]

Could need a valve adjustment. How many miles on it?

5k miles on the sled. I will check the harness this weekend that's a good start. Thanks