SLP Stage III issue?? update: bad piston rings?

[tdblakes]

its probably something stupid simple like a rubbed wire or something thats shorting and causing the injector to stick open. electrical gremlins suck. I hope they find it soon and you can have your own sled back! good luck man.

 

[Old Scud-doo]

My sled was doing something pretty close to what you are describing. Foul a plug or both plugs within 10 miles or 10' of the trailer. Replace with new plugs and she would run all day. Last time it happened it started and moved up one sled length in trailer and died. Had to pull it out of trailer by hand! We ended up replacing the injectors. Still ran a little crappy and found out the tps was set too low and then that the tps min max setting on the PC5 was not correct, we corrected yesterday. We believe all is now good. I will be in West Jellystone this Sat. thru Thurs. so I hope they are right. It sure sounds like injectors to me. By the way, I was under the assumption that both plug wires fire at the same time so there really is no wrong way to install them to the wrong cylinder. Am I wrong with this assumption?

 

[minecat]

My sled was doing something pretty close to what you are describing. Foul a plug or both plugs within 10 miles or 10' of the trailer. Replace with new plugs and she would run all day. Last time it happened it started and moved up one sled length in trailer and died. Had to pull it out of trailer by hand! We ended up replacing the injectors. Still ran a little crappy and found out the tps was set too low and then that the tps min max setting on the PC5 was not correct, we corrected yesterday. We believe all is now good. I will be in West Jellystone this Sat. thru Thurs. so I hope they are right. It sure sounds like injectors to me. By the way, I was under the assumption that both plug wires fire at the same time so there really is no wrong way to install them to the wrong cylinder. Am I wrong with this assumption?

I to was under the assumption that the plugs fired at the same time but the only thing I did when I was having this problem was to plug the coil in to the cylinder that the polaris schematic said to and it fixed my problem so there must be some reason for it
Dragon, did they check your wires, I assume they did but didnt see where u said that they did.

 

[Scott]

You mean like parallel firing? Didn't Polaris diesel ATV from about 8 years ago do that?

I to was under the assumption that the plugs fired at the same time

 

[Dragonbag]

My sled was doing something pretty close to what you are describing. Foul a plug or both plugs within 10 miles or 10' of the trailer. Replace with new plugs and she would run all day. Last time it happened it started and moved up one sled length in trailer and died. Had to pull it out of trailer by hand! We ended up replacing the injectors. Still ran a little crappy and found out the tps was set too low and then that the tps min max setting on the PC5 was not correct, we corrected yesterday. We believe all is now good. I will be in West Jellystone this Sat. thru Thurs. so I hope they are right. It sure sounds like injectors to me. By the way, I was under the assumption that both plug wires fire at the same time so there really is no wrong way to install them to the wrong cylinder. Am I wrong with this assumption?

They have replaced the injectors TWO times in the past month. Tech was suspecting this was the problem. Even put a second set in, just in case the first set he installed was faulty.

New TPS was installed. Both original and new TPS were calibrated with the PC5.

The tech was also explaining the plug firing, and assumed that wrong installation was not a factor. He was going to check into it after I told him about Minecat's experience. Forgot to ask him this morning, what he found out. Assume that wasn't the problem since my sled is still broken. He his desperate for a solution, so don't see him neglecting to follow up on the suggestion.

 

[Old Scud-doo]

My sled was doing something pretty close to what you are describing. Foul a plug or both plugs within 10 miles or 10' of the trailer. Replace with new plugs and she would run all day. Last time it happened it started and moved up one sled length in trailer and died. Had to pull it out of trailer by hand! We ended up replacing the injectors. Still ran a little crappy and found out the tps was set too low and then that the tps min max setting on the PC5 was not correct, we corrected yesterday. We believe all is now good. I will be in West Jellystone this Sat. thru Thurs. so I hope they are right. It sure sounds like injectors to me. By the way, I was under the assumption that both plug wires fire at the same time so there really is no wrong way to install them to the wrong cylinder. Am I wrong with this assumption?

WRONG!!!! Sitting at West Yellowstone not able to ride because the problem has not been fixed. If the outside temp is cold it fouls and overfuels the sled at idle. Thanks to Brandy at West Yellowstone Polaris or I would have had to rent today. What the hell is the problem?

 

[Dragonbag]

Update: Fingers crossed...

Dealer phoned Friday afternoon, excited, believe they have the problem resolved. They spent a couple of days running the sled around their yard with a laptop hooked up to it. Been sending data to Poo engineers, and preforming tests as directed by the engineers. Results led them to believe that the exhaust temp probe was faulty. Replaced probe. Told me that they have got the best run time out of it so far, since probe was replaced. They were pretty confident that this was the issue. I picked up my sled and brought it home, but have not had a chance to test ride it yet. Out of town yesterday, and -25 to -30 deg C here today. Too cold for this cat!!! Didn't want to break down in these conditions. Will get it out and put some miles on as soon as the temps warm up a little. Looking like it may take a week before this will happen...Sure hope this simple fix will end my ordeal, but not gonna get too excited until I actually put quite a few miles on. Will post updates after I get out for some test riding...

 

[rp2000r]

My firends 12 163 is down for the third time, 200 miles on it, Same issue, won't idle, no reverse, bogg etc..

TPS was loose supposedly first time, replaced second visit to dealer, and will be getting dropped off again tomorrow...

Getting old when every trip out his new sled has issues...

I will update once it's sorted out

Friend has a 12 Pro 163 Snowcheck
He had a few problems and all came down to a bad TPS sensor.
Sled has around 100 miles on it and it was just replaced and all seems ok.

Around 50 miles sled started idling really high or low, stumbling and lights flashing, no reverse. Dealer said loose TPS/fixed.

Sled idled fine and drove on trailer fine, Next trip, started dying, rough idle, lights flashing, no reverse. Limped back 10 miles to cabin.

Returned to same dealer, TPS replaced..Seems ok now.

Time will tell...

 

[1racer]

Hope it is the pipe temp probe. That is the same problem I had with mine as stated in previous post. The computer thinks everything is alright but probe ohm readings just randomly keep scrolling thru the numbers and ecm just keeps trying to compensate.

 

[Old Scud-doo]

Replaced probe and rode it to the timeshare. Let it sit for over an hour at 10 degrees and fired the girl up and rode her! I sure hope it's fixed, tomorrow will tell for sure. I will post if its fixed or still a problem.

 

[Dragonbag]

Replaced probe and rode it to the timeshare. Let it sit for over an hour at 10 degrees and fired the girl up and rode her! I sure hope it's fixed, tomorrow will tell for sure. I will post if its fixed or still a problem.

Right on!!! That's great news! Sure hope the new probe turns out to be the fix...Hoping 1Racer is correct as well. A faulty probe is starting to look like a bit of a trend...If it turns out to be the root of our issues, wow, sure a lot of grief caused by such a small, seemingly insignificant component!

Down to -35 deg C here now, and back at work. Still not going to get mine out for some testing until at least this weekend. Looking forward to hearing your update.

 

[1racer]

When my probe went bad I chased everything to the point of replacing injectors checking and testing tps and checking every sensor on the sled to make sure they met factory specs. The pipe temp sensor test gave a specific ohm reading for the temp sensor if it was at a certain temperature. I tried to reach the temperatures specified and experienced continuously moving ohm readings, so I checked the sensor when it was at room temperature after an hour of cool down and the ohm readings kept cycling greatly on the ohm meter. When the sensor is at any temp the ohm reading should be stable not continuosly moving drasticaly on the meter. I have been told that when a pipe temp sensor fails the ecm sets a code, but on mine it didn't as it was still reading. Just my findings.

 

[Dragonbag]

When my probe went bad I chased everything to the point of replacing injectors checking and testing tps and checking every sensor on the sled to make sure they met factory specs. The pipe temp sensor test gave a specific ohm reading for the temp sensor if it was at a certain temperature. I tried to reach the temperatures specified and experienced continuously moving ohm readings, so I checked the sensor when it was at room temperature after an hour of cool down and the ohm readings kept cycling greatly on the ohm meter. When the sensor is at any temp the ohm reading should be stable not continuosly moving drasticaly on the meter. I have been told that when a pipe temp sensor fails the ecm sets a code, but on mine it didn't as it was still reading. Just my findings.

Good stuff Man! Sounds like the same situation dealer found with my sled. No codes on mine either. Thanks for the in depth explanation. Will let you know how things go as soon as I have a chance to test her out...

 

[madmax]

Suggest they replace the exhaust pipe sensor, even if it hasn't set a code. I'm not garanteeing that is the issue, but it has happened with the Dragons that the sensor was bad and didn't set a code/turn on the light.

sled_guy

A month later and we are back to this. Nice work Sled Guy.

 

[sureman]

spark

my vote is for the spark plug wires arcing out on the head or head bolt.. seen this on my 2011 too.. heard of it on the 2012 as well... check those close, maybe put some fuel line hose over them on the contact points.. thats what we did..

 

[Old Scud-doo]

Well sled went through 3 sets of plugs to get the three blocks to West Yellowstone Polaris. After tearing apart the sled the injectors look like they have all the o-rings but.....the VForce III reeds are all chipped up on the edges and not sealing. Going to have service install the stock reeds and try it again tomorrow morning. Wish me luck!

 

[Monster580]

i have seen this happen on a pro with a stage three kit on it i dont know if it fouled a plug butter it wouldn't rev over 7000 it would just fall on its face turns out the guy was running to much octane and the fuel couldnt burn fast enough

 

[Dragonbag]

Well sled went through 3 sets of plugs to get the three blocks to West Yellowstone Polaris. After tearing apart the sled the injectors look like they have all the o-rings but.....the VForce III reeds are all chipped up on the edges and not sealing. Going to have service install the stock reeds and try it again tomorrow morning. Wish me luck!

No way dude!!! That sucks!!!

How old are your VForce reeds? Can't imagine that being the issue on mine...only had maybe 400-500 feet on my sled before it crapped out the first time after the stage III kit was installed.

Sure wish it would warm up a little around here, so I could get mine out for some testing and see what happens. It's ridiculous, but at least I'm not upset again with mine breaking down, as long as it sits in the garage...lol

Keep the updates coming, and I will do the same as soon as I'm back out on the snow!

 

[Dragonbag]

my vote is for the spark plug wires arcing out on the head or head bolt.. seen this on my 2011 too.. heard of it on the 2012 as well... check those close, maybe put some fuel line hose over them on the contact points.. thats what we did..

My tech did find some wear on my wires when I had sled in for some service work last year, but he did some rerouting at that time, to avoid further wear.

He did install new wires this go around, just to rule that out as a possible cause. Didn't fix the problem...Thanks for the suggestion.

 

[Dragonbag]

i have seen this happen on a pro with a stage three kit on it i dont know if it fouled a plug butter it wouldn't rev over 7000 it would just fall on its face turns out the guy was running to much octane and the fuel couldnt burn fast enough

Appreciate the input, but can't imagine too much octane having a negative impact. Just running good ole premium, no race gas, octane boost, or anything above what is recommended by Poo and SLP.