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Nytro code 37 issues

Hi I'm hoping to come accross someone with a lot of experience with Yamaha Nytros or has had the exact same issue as mine and fixed it. Not to be rude but I'm not looking for opinions or theories from people who haven't dealt with the issue.

My 08 Nytro flashes a code 37 and runs very poorly. I replaced the idle control valve (throttle body solenoid) and it ran better for a day until the very end of the day when it started flashing the code again and running at high idle at times and low idle at other times. It even backfired once. When you hammer down on the throttle it it seems to go fine, it just runs poorly otherwise. I've also replaced the spark plugs.

For a while before its started throwing code 37 it seemed to run better when it was cold than when it warmed up.

Any similar occurences? Thank you!

Jason
 
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