2010 800 Dragon-MID RANGE STUMBLE!!

[metallicat]

So i had my new dragon out for the first dig on Saturday. When going wide open, back of to 1/3 or 1/2 throttle and try to get back in the throttle.... it falls completely on it's face every time. Kinda thought it might just be the oil in the gas for the first tank. Filled up and the same thing. Called my dealer today and he said his phone has been ringing off the hook. We are in North Dakota (low elevation) and he said they are ALL doing it. he has been reviewing the mapping and talking to Polaris. The map in it is way lean in the midrange and fat on the top end. So when you back off and get back in the throttle, it runs out of gas. Polaris told him they are really not even working on a flash for it. (Because above 3000 feet it's not a problem IMO) So now if we want them to run we have to buy a PCV5 and map it ourselves for $400. Nice that we buy a $11,000 snowmobile and we have to spend $400 to get it to run!! I was born and raised on Polaris and probably never switch but how much can i take!?!? Any other thoughts on this theory of the mapping?? The dealer said they tried setting some TPS's first but it wasn't the problem. Basically sounds like Poo knows what's wrong but i suppose we will see a remap for it about march or april if we are lucky!!

 

[snowjunkey]

My Assault has the same problem but not as bad as your's.Not even going to waste my time with dealer's I have no confidence in them.I will put the pcv5 on.Only way I will take it back to the dealer would major engine failure.

 

[Super B]

Welcome to the Dragon 800 club. I have an '09 with the '10 update and mapping and it DID the same as yours. I purchased a PCV from Dynotech Research with their map preloaded, and now the sled screams!!! No stumbles and runs like it should.

 

[600HOBandit]

same problem here. Riding in the U.P. and mid range is HORRIBLE! There are many positive posts on here about the PC V. Talk to Jim, he's great to deal with. Ordered one today. I agree with your thought about the company we all have grown up with, and their service!

 

[matt185]

Same problem... My dealer is overwhelmed with 09/10 800's that are running like sh*t. Hoping to see a reflash soon- otherwise I might try the PC V

 

[gaberneighbor]

Problem still exists at high elevation

Took my brand new 2010, 800 RMK 155 to Cooke City, Montana last week (elevation 7800 ft) and I had some what of the same problem except it was going into limp mode. Ric Somers at cooke city exon looked at it and said it was either bad gas or the computer was having a tough time adjusting to the elevation. It did not apear to make a difference if the wire was unpluged or pluged in and the problem was still there after 4 tanks of 91 octane that was purchased at cooke city exon. kinda scary when your climbing and it goes into limp mode. This problem needs to be fixed by polaris because it is dangerous.

 

[07dragonguy]

Mine has a slight midrange hiccup as well (6-8,000' elev.). I only have 100 miles (two tanks of gas on mine, so i thought maybe it had something to do with the premix), will see after another ride or two as all of that should be worked out pretty quickly.

 

[Ron]

They work very well at elevation so yours must have another issue. If the TPS is off the wrong way it can make them leaner and deto will set off the limp mode. If it's not the fuel it's likely the TPS setting.

 

[gaberneighbor]

fill me in on the tps.?.?

 

[Tec]

fill me in on the tps.?.?

Throttle Position Sensor

 

[Fitz]

I have a 2010 800 switchback with the same midrange problem. I took it to the dealer and they said they haven't heard of this problem ( yeah right) told me that they couldn't duplicate the problem. told me that it could be the throttle position sensor. I've had many sleds and I know what the differenced is. This is a mid range lean problem. I've owned a dozen new polaris in the past 20 years. Never owned anything else. That is about to change. sorry for the rant. my question... I take it the pcv5 is a fuel controller. just how complicated is it to install. I mentioned this to the dealer and they said oooh that would be nothing but problems, my thought is at least I won't burn it down.

 

[supraturbo]

They work very well at elevation so yours must have another issue. If the TPS is off the wrong way it can make them leaner and deto will set off the limp mode. If it's not the fuel it's likely the TPS setting.

sorry to tell you but it is a 100% fuel injection problem from a to z from 0 to 8200 rpm.....nothing is right with the mapping basicaly! it is not crisp as it should be.still better throttle response than the old carburated summit but not even close to artic cat m series. don't look for any other problems on the stumble/hickup thing......it is a bad mapping from polaris.

 

[2007dragonman]

sleds

Guys running at low elevation. you do have the right weights in for low altitude? That makes a big difference. We are in SD and are riding many rmks around and they work great. We did find that the slp helps nice but should add some octane boost every now and then!!

 

[I'LL WIN]

Mine has the stumbe too and when I rode from about 1,000' to about 2,500 I noticed the stumble decreased as elevation increased. By the time I got back to lower elevations it was back as bad as ever. I agree it appears Polaris didn't get the mapping right yet. My wife is going to have a cow when I spend another $500 or whatever it costs for a PCV. Love the sled other than the stumble and running boards.

 

[metallicat]

Guys running at low elevation. you do have the right weights in for low altitude? That makes a big difference. We are in SD and are riding many rmks around and they work great. We did find that the slp helps nice but should add some octane boost every now and then!!

Thanks for the tip dragonman, but i've been riding and working on my own sleds for 27 years. I think i understand we have to run different weights for our area.

 

[snowjunkey]

It may be the ecu is just not compensating for the lower altitude.I was at Chris Burandt's in Dec and rode 2010 Dragon's In Rabbit Ear's and one had a SLP can and it just ripped.Very sad that these so called engineer's can not get this right.Mostly disappointed because I love this chassis!

 

[DragonSlayer1]

So i had my new dragon out for the first dig on Saturday. When going wide open, back of to 1/3 or 1/2 throttle and try to get back in the throttle.... it falls completely on it's face every time. Kinda thought it might just be the oil in the gas for the first tank. Filled up and the same thing. Called my dealer today and he said his phone has been ringing off the hook. We are in North Dakota (low elevation) and he said they are ALL doing it. he has been reviewing the mapping and talking to Polaris. The map in it is way lean in the midrange and fat on the top end. So when you back off and get back in the throttle, it runs out of gas. Polaris told him they are really not even working on a flash for it. (Because above 3000 feet it's not a problem IMO) So now if we want them to run we have to buy a PCV5 and map it ourselves for $400. Nice that we buy a $11,000 snowmobile and we have to spend $400 to get it to run!! I was born and raised on Polaris and probably never switch but how much can i take!?!? Any other thoughts on this theory of the mapping?? The dealer said they tried setting some TPS's first but it wasn't the problem. Basically sounds like Poo knows what's wrong but i suppose we will see a remap for it about march or april if we are lucky!!

Mine did the same things and it was the TPS. had the dealer do it and it ran great for 09.

 

[800poodragon]

my question... I take it the pcv5 is a fuel controller. just how complicated is it to install. I mentioned this to the dealer and they said oooh that would be nothing but problems, my thought is at least I won't burn it down.

The PCV is very simple to install. Open the hood, undo a couple of screws for the electronics cover above the clutch, unplug wire harness, plug PCV harness into what you just unplugged on both ends, put velcro on PCV unit and stick to airbox, put cover back on and you are done if mapping is installed. If you want to upload the map or download the map that is also very simple. Plug cable into the PCV and your laptop, open PCV programming on your laptop and it is there. The install takes 5 to 10 minutes tops.

 

[MNSLEDNECK56308]

^Correct, it takes longer to get the clutch cover mounted back in the two slots than to acutally install the PC5!

 

[nanook]

The PCV is very simple to install. Open the hood, undo a couple of screws for the electronics cover above the clutch, unplug wire harness, plug PCV harness into what you just unplugged on both ends, put velcro on PCV unit and stick to airbox, put cover back on and you are done if mapping is installed. If you want to upload the map or download the map that is also very simple. Plug cable into the PCV and your laptop, open PCV programming on your laptop and it is there. The install takes 5 to 10 minutes tops.

I'm sure the PCV is a great tool and the install is user friendly but it's more about principle more than anything. The Polaris 800 does not perform well for a stock 800, we shouldn't have to shell out another $400 dollars for it to do so. It's the responsibility of Polaris to make it run like an 800, not the owner after the fact. Polaris makes a great stock 600 that produces around 125 hp, by comparison the stock 800 should produce around 165 hp which it doesn't even come close to.