Ridiculous as it may sound, There have been lots of post I’ve seen where people get misfire codes and it has nothing to do with the engine at all, it usually ends up being something wrong with the belt. Probably why the dealer can’t figure it out. They’re looking in the wrong place.


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The dealership said they checked the CVT belt and it was in good condition. They tech said he is waiting on a call from polaris as they still cannot find issue. I am going to suggest that they reflash the computer

 

I have the same thing happing on two different 18 xp 1000 4 seaters once they get below a half a tank and u put down the trail for awhile and everything gets nice and hot. Then u go jump on the hwy and and try to go 55 they cut out and go into limp mode and get a cylinder misfire code. If u fill it with gas or let it cool off it will run fine.

Could it be the fuel pump o-ring deal I've been reading about on here?

 

Oh by the way I have a 18 2 seat xp 1000 no problems at all. Just the 4 seaters.

 

I’m having similar issues. 18 4seater. Long story short, my wife and I were in the mountains, ran fine for a while. Started blogging down around 20mph. Little while later it dies. Did this 3-4 times that weekend.
Fast forward to this week. Back to the mountains, unloaded off of trailer, pulled up next to my truck and died, wasn’t even warmed up. I’m thinking fuel pump on mine. CEL came on a while ago and before I could get it checked, was gone.


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I have the exact same RZR and problem. 2015 XP4 1000. We were doing the Barstow to State line (Vegas) run and It just would just drop into half power mode after the second misfire code. If you turned off the ignition and let it sit it would come back to full power and then after a while it would misfire code again and it would drop into half power mode again. Same error codes. I have the ride command. I took it to the dealer and it turned out it was a slipping belt. I replace the belt (looked fine) but solved the problem. FYI it was the original belt. Bought the RZR new in 2015.

 

I have a new belt and cleaned my clutches before the trip. I'm going to build a heat shield for the has tank and fuel lines.

 

Oops fuel tank