I need some insight

[sledhappy]

I am reaching out for some insight and help. I have the Axys 163 2.6 ride at 8000-11000. I cannot get rpm above 8100 on a hill and about 8200 maybe 8300 on the road.
I have changed spark plugs. Put in a black green primary spring, stock helix, tried both black purple and black white secondary springs. Ran 62 Polaris weights 68 MTX no weight and then 1 gram I'm the tip. This years MDS weights. All different combos. And the RPM is the same. In all set ups. Pull a hill 8000-8100. Down the road 8200 if it's just right 8250. Track speed up a hill max so far 34mph. The primary appears to be shifting all the way out. I have drawn line with black marker to make sure I am getting full range of motion both primary and secondary. I put on the jaws pipe no change of RPM. It sounds like the power valves are working you can almost hear it with the pipe 6300 and 7300RPM.
I have called local dealers and they can't say what it is. Could it be TPS? One dealer said there was a "canister looking apiece about 2 1/2 long above the oil tank that has about 5 wires in it that shorted on one sled and that caused low RPM and Polaris was back ordered for that part. But all dealers just said well 8150 is where Polaris says it should be and there is no lights/codes showing on your end. Trying to figure this out. I need some other thoughts as I have exhausted my limited knowledge on it.

Any thoughts as what I can look for or do would be very appreciated.

Thanks

Chad

 

[Jreng87]

ECU still in break-in mode and limiting RPMs a bit?

 

[sledder22]

I am reaching out for some insight and help. I have the Axys 163 2.6 ride at 8000-11000. I cannot get rpm above 8100 on a hill and about 8200 maybe 8300 on the road.
I have changed spark plugs. Put in a black green primary spring, stock helix, tried both black purple and black white secondary springs. Ran 62 Polaris weights 68 MTX no weight and then 1 gram I'm the tip. This years MDS weights. All different combos. And the RPM is the same. In all set ups. Pull a hill 8000-8100. Down the road 8200 if it's just right 8250. Track speed up a hill max so far 34mph. The primary appears to be shifting all the way out. I have drawn line with black marker to make sure I am getting full range of motion both primary and secondary. I put on the jaws pipe no change of RPM. It sounds like the power valves are working you can almost hear it with the pipe 6300 and 7300RPM.
I have called local dealers and they can't say what it is. Could it be TPS? One dealer said there was a "canister looking apiece about 2 1/2 long above the oil tank that has about 5 wires in it that shorted on one sled and that caused low RPM and Polaris was back ordered for that part. But all dealers just said well 8150 is where Polaris says it should be and there is no lights/codes showing on your end. Trying to figure this out. I need some other thoughts as I have exhausted my limited knowledge on it.

Any thoughts as what I can look for or do would be very appreciated.

Thanks

If its deep with a hard pull you will need 10-60's with the slp pipe you can do 10-62's I ride the same elevation

 

[AndrettiDog]

I would start by going back to the stock setup to eliminate other issues. Get back to the black spring, stock helix and 62's for your elevation. Make sure belt deflection is right on. Use stock pipe and can.

Check little things like track tension, air box connections, throttle cable play

I don't think the TPS would contribute at higher RPM's, but I could be wrong. Most of the TPS issues are down low at idle.

I have heard of wires shorting in the harness. I would make sure that none of them are stretched and have some play.

Sorry about your issues, but the Axys is a great sled. Don't lose faith. If you get it going, you will fall in love out on the white stuff!

 

[NoSoup4U]

Sounds like with all of your testing that you have some hours on the motor. If you don't, here's something to consider. At 3 hours I could only pull 8200 rpm on the trail and around 8000 in the powder. By the time I had 10 hours I was pulling 8300-8400 in the powder and 8500+ on the trail with the same clutching. If you already have 10+ hours, then it must be something else. If you have less, you may just need more seat time.

 

[2005 1m]

I'm really curious to see how this pans out for you. I'm in a similar situation and will keep you posted if I figure anything out. mod wise all i have on is a diamond s can and carls clutching (but started with stock clutching). Seems as though no matter what I do - changing from stock clutching to carls, dropping primary weight with the carls kit still in - it doesn't effect the RPMs. on a big hill at 9500 ft in light UT pow 8050 rpm seems to be the max for me. The odd thing is I'm pulling more track speed than you (legitimate 36-38mph). I see a little bump up to 8200 on the trail but it quickly settles back down to 8100. 163 x 2.6.

 

[06redrevx]

Starting to wonder if the diamond s has anything to do with it? Same can I have and can only get 8050 rpm.

Can seems like such a quality piece but have been looking at others with low rpms and some have the same can

I'm sure others will same they are pulling proper rpm with Diamond S?

 

[Sheetmetalfab]

Starting to wonder if the diamond s has anything to do with it? Same can I have and can only get 8050 rpm.

Can seems like such a quality piece but have been looking at others with low rpms and some have the same can

I'm sure others will same they are pulling proper rpm with Diamond S?

Easy swap to eliminate concern?

 

[sledhappy]

Thanks for the replys.

I have 19 hrs on the motor. I have tried all the clutching back and forth from stock on up then back again. I have ran the stick pipe until 2 weeks ago. Again no change in rpm sounds better and snappy on the Bottom and mid. Then when I get on the top end it just does not seem to keep pulling.
It does not bounce like its on a rev limiter it just seems to change and "de tune" best way I can say it.
I will keep everyone posted as to what I find. I'm going to di electric grease the fittings. Make sure nothing is shorting. Also checking compression. If there is something I could be missing please let me know. I hav checked belt deflection and changed belts.

Again thanks for your thoughts I'm willing to try anything.

 

[die hard poo]

Sounds very similar to my issues. You can read my thread:
http://www.snowest.com/forum/showthread.php?t=407659

Mine initially was a day of super low RPM (7000rpm, but now has settle out to around 8000rpm on the mtn) and now feels like a detuned motor. And no matter what I have checked, which is just about everything mechanical and electronic I can't seem to get the snappyness or high rpm back.

What is this cylinder thing in the harness bag above the clutch cover do? I would be interested to see what this does. Definitely sounds like we are in the same boat. And we are at completely different elevations too.

Update:
Looks like that electronic cylinder thing is some sort of converter:
http://www.polarispartshouse.com/oe...rical-switches-sensors-components-all-options
#30-4014356 CONVERTER, PWM TO ANALOG

Still don't know what it is though

 

[Calvin42]

Was at the dealer the other day when I picked up my 2016, 163" 2.6. He had one of his business partners AXYS 800's in the shop as he was having low RPM issues as well. Polaris told him to change the component you're talking about. I guess it converts an analog signal to a digital or vise versa. "Supposedly" that took care of the problem. I haven't even ridden mine yet, however, when I took it out of the trailer the other night and started it, it would idle between 1500 and 1650 RPM's. I understand the break-in and all the oil, however, I never had that issue with my 12 or 13. Both are running strong with ZERO issues. I was going to wait, but getting 2K off a new sled was to tempting. Hope Polaris comes out with a remedy soon. I have no doubt they are monitoring these threads. Just hope either their engineers or one of you intelligent sledhead's on here figure it out. Am seeing great reviews from the guys not having issues. Just wanna ride this thing.

 

[rollaauto]

Mine is a 155 2.6, after 11 hours it would run 8350 at 3/4 throttle and seems strong. If I then pin it, it falls on its face. Motor drips back to 8200 and feels as if something is holding it back, motor almost sounds like it's bogging. Dealer told me I was weighted to lite.

 

[sledhappy]

Mine is a 155 2.6, after 11 hours it would run 8350 at 3/4 throttle and seems strong. If I then pin it, it falls on its face. Motor drips back to 8200 and feels as if something is holding it back, motor almost sounds like it's bogging. Dealer told me I was weighted to lite.

That is interesting. I will try throwing more weight at it. I was taking to a knowledgable friend today and he heard the same thing on the stage 3 the motor has enough torque to go through the clutch and then be bogged down. "Make the sled work harder." If you find out anything more on this please let me know. I will do the same.

I talked to a dealer here and they said they have heard of the resistor going down but when it did the sled would only get about 7k tops and not run good anywhere. We are going to hook up the sled thurs run some tests to see if something is just out of spec a little that would cause this but not throw codes.

Thanks again for different insights and ideas to look into.

 

[sledhappy]

Sounds very similar to my issues. You can read my thread:
http://www.snowest.com/forum/showthread.php?t=407659

Mine initially was a day of super low RPM (7000rpm, but now has settle out to around 8000rpm on the mtn) and now feels like a detuned motor. And no matter what I have checked, which is just about everything mechanical and electronic I can't seem to get the snappyness or high rpm back.

What is this cylinder thing in the harness bag above the clutch cover do? I would be interested to see what this does. Definitely sounds like we are in the same boat. And we are at completely different elevations too.

Update:
Looks like that electronic cylinder thing is some sort of converter:
http://www.polarispartshouse.com/oe...rical-switches-sensors-components-all-options
#30-4014356 CONVERTER, PWM TO ANALOG

Still don't know what it is though

That sucks. I know when you have a sled that runs then it goes bad on you and you cant figure it out it's very frustrating. I will keep you updated on what I find. I read your post earlier hope you find the issue. The sled is a blast to ride awesome handling just need to figure this out.

 

[MDS]

Been there done that get your TPS adjusted to the high side of spec. The sled was on the low side of spec.

 

[RMK935VA]

I have a 163 by 2.6. Running Carl's helix and diamond s muffler. Pulls to 8250 and then settles back a little on the upshift. Guys getting 8400 TP 8500 RPM are making less horsepower/torque. Jack at Carl's thinks mine is in the sweet spot and I agree. I rode an slp pipe equipped 155 running 8450 and mine felt stronger on top. I could get a little more with weights or switching the helix to run in the 40 degree ramp but it is working too well to mess with it. That us my experience. I was concerned that I wasn't getting the most out of the sled because of all of the talk about 8300 to 8500 RPM out there. I am not anymore.

 

[Timbre]

Mine is a 155 2.6, after 11 hours it would run 8350 at 3/4 throttle and seems strong. If I then pin it, it falls on its face. Motor drips back to 8200 and feels as if something is holding it back, motor almost sounds like it's bogging. Dealer told me I was weighted to lite.

Try the Carls helix. . . it just plain works! Call them. They will explain how and why it works so well.

 

[edi1967]

I am reaching out for some insight and help. I have the Axys 163 2.6 ride at 8000-11000. I cannot get rpm above 8100 on a hill and about 8200 maybe 8300 on the road.
I have changed spark plugs. Put in a black green primary spring, stock helix, tried both black purple and black white secondary springs. Ran 62 Polaris weights 68 MTX no weight and then 1 gram I'm the tip. This years MDS weights. All different combos. And the RPM is the same. In all set ups. Pull a hill 8000-8100. Down the road 8200 if it's just right 8250. Track speed up a hill max so far 34mph. The primary appears to be shifting all the way out. I have drawn line with black marker to make sure I am getting full range of motion both primary and secondary. I put on the jaws pipe no change of RPM. It sounds like the power valves are working you can almost hear it with the pipe 6300 and 7300RPM.
I have called local dealers and they can't say what it is. Could it be TPS? One dealer said there was a "canister looking apiece about 2 1/2 long above the oil tank that has about 5 wires in it that shorted on one sled and that caused low RPM and Polaris was back ordered for that part. But all dealers just said well 8150 is where Polaris says it should be and there is no lights/codes showing on your end. Trying to figure this out. I need some other thoughts as I have exhausted my limited knowledge on it.

Any thoughts as what I can look for or do would be very appreciated.

Thanks

Chad

Any more information or follow up on this issue? Myself and my brother seem to be experiencing this same problem.

 

[Dootimes2]

Try cleaning power valves and using a new belt. Read a couple posts on hear about a couple guys doing one of these 2 things and fixing their low rpm problems.

 

[Jaynelson]

Check for worn rollers and weights in clutch as well if you have a few miles.