So this is just my story on what I was dealing with on my 900 for the last month and a half. It's not a guarantee that anything I say will be an issue with yours, but it might be something to consider. I apologize if this gets lengthy but I'm able to convey my thoughts best by telling it as the story it is.
I bought my first 900 in late November, having never heard one run before I had only to believe that it was running properly. And the fact is it did seem to be running in peak performance. When I started it cold it would fire on the third pull consistently and then warm up around 1600 rpm. When riding it I would open it right up and couldn't believe how hard that thing pulled!! What a monster! =D
So with that as my basis for it's running performance I rode it until it started acting up in early January. I would be riding and let off the throttle and instead idling at 15-1700 rpm it would drop to 7-900 rpm, hardly able to keep itself running. It wasn't very noticeable at first, but as the next couple days went on I noticed the problem getting worse. It got to the point that on cold startup it would only run at about 900 rpm and the MFD would flicker on and off. I replaced the plugs and that did nothing to solve the problem. I did some hunting around here on Snowest and other forums and all the arrows seemed to be pointing to my TPS.
"Okay, lets build a tps adjustment tool!" Not as easy as I'd hoped. A 5V regulator is almost impossible to find where I live. I went and talked to the mechanic at the sled shop in town, he said he "owned a lot of 900's the last few years" (which I find hard to believe) and said that there is no way it could be the TPS, and even if it was, the ONLY way to adjust it was with the digital wrench program. With his advice in mind and my frustration growing I threw my sled on the trailer and hauled it to the Polaris dealer in next town north for a TPS adjustment.
This is where the fun began. The mechanic tried adjusting the TPS and found the sled was getting low voltage delivered to the sensor. He discovered that the main wiring harness had shorted and wasn't delivering the proper voltage. Replaced that and found the problem wasn't fixed. He called the higher-ups at Polaris and they told him to replace the stator and the voltage regulator as the stator was a common problem with the 900. That done he found the TPS was showing too high of voltage at baseline. Next step, replace the TPS itself. Finally after a month and a half of waiting on parts to be delivered I got my sled back. Now on cold startup it runs around 2100 rmp until it hits 100 degree's then idles back to 16-1700 rpm. I can't believe how much more responsive it is now!
The sad part of the story is that I broke my leg and my riding season is done until next winter... October 23, 2012 - Feb 12, 2013 isn't as long as I would have liked, but I still got around 700 miles on my sleds this year!
I bought my first 900 in late November, having never heard one run before I had only to believe that it was running properly. And the fact is it did seem to be running in peak performance. When I started it cold it would fire on the third pull consistently and then warm up around 1600 rpm. When riding it I would open it right up and couldn't believe how hard that thing pulled!! What a monster! =D
So with that as my basis for it's running performance I rode it until it started acting up in early January. I would be riding and let off the throttle and instead idling at 15-1700 rpm it would drop to 7-900 rpm, hardly able to keep itself running. It wasn't very noticeable at first, but as the next couple days went on I noticed the problem getting worse. It got to the point that on cold startup it would only run at about 900 rpm and the MFD would flicker on and off. I replaced the plugs and that did nothing to solve the problem. I did some hunting around here on Snowest and other forums and all the arrows seemed to be pointing to my TPS.
"Okay, lets build a tps adjustment tool!" Not as easy as I'd hoped. A 5V regulator is almost impossible to find where I live. I went and talked to the mechanic at the sled shop in town, he said he "owned a lot of 900's the last few years" (which I find hard to believe) and said that there is no way it could be the TPS, and even if it was, the ONLY way to adjust it was with the digital wrench program. With his advice in mind and my frustration growing I threw my sled on the trailer and hauled it to the Polaris dealer in next town north for a TPS adjustment.
This is where the fun began. The mechanic tried adjusting the TPS and found the sled was getting low voltage delivered to the sensor. He discovered that the main wiring harness had shorted and wasn't delivering the proper voltage. Replaced that and found the problem wasn't fixed. He called the higher-ups at Polaris and they told him to replace the stator and the voltage regulator as the stator was a common problem with the 900. That done he found the TPS was showing too high of voltage at baseline. Next step, replace the TPS itself. Finally after a month and a half of waiting on parts to be delivered I got my sled back. Now on cold startup it runs around 2100 rmp until it hits 100 degree's then idles back to 16-1700 rpm. I can't believe how much more responsive it is now!
The sad part of the story is that I broke my leg and my riding season is done until next winter... October 23, 2012 - Feb 12, 2013 isn't as long as I would have liked, but I still got around 700 miles on my sleds this year!
