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sledhead004
Member
Two more today failed!!
any D8 WITH updates failing?
- Thread starter nighttrain
- Start date
2 more what? 2 more 2009 D8's with or without update? What elevation?
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sledhead004
Member
one 2008 D8 and a now 2 2009 D8s riding elevation 6500ft. to 10,000Ft.
Where did you hear that?
I had my sled to get the update done but the dealer's mechanic was sick/hurt his leg. So I am now riding it but they have an update kit set aside for me (no waiting for parts).
I think I am going to wait a little bit and ride it un-updated, at least until Polaris releases the new flash/map that I keep hearing about.
If it doesn't run good after a couple rides I will probably buy a PCV.
new flash? is that another new one coming since the 2010 update? I hope i read that wrong.
That sounds like a dealer issue right there. Motors dont burn down with 5 and 15 miles on them unless the mechanic did something wrong or somehow the owners did something to them.
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600xc4me
Well-known member
My updated 08 went down after a tank and a half of pre mixed gas, riding around 1400'. (didn't check miles so don't ask) Got it rebuilt, found my Voltage regulator, pipe senser, reeds and pipe all needed replacing. Replaced the ecm as well just in case. Cause you can't test those things to see if they are running you lean. Now after having all that replaced it's running pretty good. Mid range was really bad first while, but seems to have worked it self out a bit. Now have almost four tanks of gas through it and when I checked my pistons today they still looked mint. So Somewhere with replacing all that they fixed the problem.
On a side note, I know a guy in town with an 09 and his is also shot now. It was updated. Not sure what his cause was yet.
On a side note, I know a guy in town with an 09 and his is also shot now. It was updated. Not sure what his cause was yet.
sleds
If sleds are only lasting 10 to 20 miles there is something definately wrong with how it was put together. So far all calls coming here are the sled is running better every ride!!!
If sleds are only lasting 10 to 20 miles there is something definately wrong with how it was put together. So far all calls coming here are the sled is running better every ride!!!
They could have the update done correctly, but didn't verify the v.r. was good. This is what I have been trying repeatedly to tell my dealer. They say that the v.r. can't be checked until it is put back together. I don't know if this is true or not.
They wouldn't or couldn't check my v.r. until it was back together either.
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dynotechjim
Well-known member
the problem appears to be the awful EPA-compliant lean midrange. The 2010 spec sleds that are detonating and/ or seizing (they are so lean there that they can seize without deto!) are doing so at part throttle. It is inconceivable that they are squeeking at WOT since they are so, so fat there. I communicate with many D8 owners who are pleased to have corrected the awful midrange with pcIII or V, and the fact that they get an extra 10-12hp at 8100 is a bonus.
we are continually autotuning with a 2010 D8 stocker, and some new lean areas were discovered yesterday. Anyone who has the latest "stoutner" map and still experiences any surgey areas please email me with your DTR user ID and I will email this latest midrange tuneup for either PCIII or V (please tell me which one you are using).
I hope no one from the EPA reads this stuff. Motorcycle dealers use PCIIIs and Vs to make stock, lean-surging bikes drive way better but they seem to be feeling the wrath of the EPA or CARB especially in CA for increasing CO emissions while they are making the bikes way more pleasant to drive.
we are continually autotuning with a 2010 D8 stocker, and some new lean areas were discovered yesterday. Anyone who has the latest "stoutner" map and still experiences any surgey areas please email me with your DTR user ID and I will email this latest midrange tuneup for either PCIII or V (please tell me which one you are using).
I hope no one from the EPA reads this stuff. Motorcycle dealers use PCIIIs and Vs to make stock, lean-surging bikes drive way better but they seem to be feeling the wrath of the EPA or CARB especially in CA for increasing CO emissions while they are making the bikes way more pleasant to drive.
Polaris won't allow you to do that unfortunately.
I was just talking with a gentleman yesterday who was telling me of an updated sled here that made it about 15min. I don't know the cause. He just said it was scored with the new update and mapping. Jim,
I know this is just a little off topic, but I have a question. With the ECU controlling the exhaust valve solenoid do you feel Polaris is holding the valves closed longer than needed in order to choke the motor? My theory is if the valves are held closed longer they can try to cheat the motor into thinking it needs less fuel. Hence the lean mid range for EPA testing. I'm not saying it works,
I was just theorizing that is what they were trying to do. I think I read on your site that you've tested the valves both ways plugged and solenoid controlled. The gentleman yesterday builds race motors and I noticed he had his valves capped off. So, I was inclined to ask his opinion on them. He said the solenoid is nice IF you have the ability to control it. I got what he was saying.
Polaris iq800 Issues
I have a polaris iq 800 with the new update kit and and it runs like S*&t. I now have 425 miles on it and cant get any answers from dealers. when i am running it if im running any throttle then i crack it it will back fire then take off and if i hold it wide open it will start to bog down and go into what they call there engine detionation control. Im at about 800 to 1000 alt and my gauge reads 12000 for some reason. I have an mbrp can. 136 track. any one have any tips thanks
I have a polaris iq 800 with the new update kit and and it runs like S*&t. I now have 425 miles on it and cant get any answers from dealers. when i am running it if im running any throttle then i crack it it will back fire then take off and if i hold it wide open it will start to bog down and go into what they call there engine detionation control. Im at about 800 to 1000 alt and my gauge reads 12000 for some reason. I have an mbrp can. 136 track. any one have any tips thanks
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dynotechjim
Well-known member
not sure what happens there, but when valves open the airflow should increase suddenly and at that instant, more fuel is needed, and the ecu must be programmed to deliver that fuel promptly or lean bog will result. All cat valves are controlled precisely with servo motors, and polaris has chosen to continue with possibly less precise mechanical operators with electronic solenoids that close, hoping that the valves will open quickly at that point. but if they miss by a hundred revs or so, rich or lean burble can result.
if you saw the last map we had last year, we had to pull big negatives at high rpm part throttle because backing off the throttle from wot the valves would often close partially prematurely (even with solenoids still closed!) causing awful rich misfire. that big block of -20s at 7500 60-40% throttle cured that. That's not a problem this year, though.
if you saw the last map we had last year, we had to pull big negatives at high rpm part throttle because backing off the throttle from wot the valves would often close partially prematurely (even with solenoids still closed!) causing awful rich misfire. that big block of -20s at 7500 60-40% throttle cured that. That's not a problem this year, though.
The dealer had mentioned bad fuel causing it to bog down and I have tired fuel from many different places and have tried from 87 setting to 92. two other of my other friends have bought the same sled this fall and theres also backfires but they dont have the bogging effect. could it be because of the can we all have the same one??
So here's the most important question???
Has anyone running the PCIII or PCV lost a motor with the update? If so was it caused by the voltage regulator? Has the VR been updated?
If not what was the cause?
If it is the VR, what is causing these vr's to go bad? How do we fix this issue besides the 2010 VR upgrade? Besides carrying around an extra vr can we fix this on our own?
Lots 'o questions, just trying to nail down the culprit and fix all of this crap.
Has anyone running the PCIII or PCV lost a motor with the update? If so was it caused by the voltage regulator? Has the VR been updated?
If not what was the cause?
If it is the VR, what is causing these vr's to go bad? How do we fix this issue besides the 2010 VR upgrade? Besides carrying around an extra vr can we fix this on our own?
Lots 'o questions, just trying to nail down the culprit and fix all of this crap.
So here's the most important question???
Has anyone running the PCIII or PCV lost a motor with the update? If so was it caused by the voltage regulator? Has the VR been updated?
If not what was the cause?
If it is the VR, what is causing these vr's to go bad? How do we fix this issue besides the 2010 VR upgrade? Besides carrying around an extra vr can we fix this on our own?
Lots 'o questions, just trying to nail down the culprit and fix all of this crap.
Coop, there is no upgraded VR..polaris changed the part number on the VR but it is the exact same vr as has been used since 08..there is no way to check other then most report right before it fries the lights get real brite....am thinking a volt guage wired into the 5 v. ecm harness that you can check while riding may be a good option....
