Engine choking at cruise speed - Polaris RZR Forum - RZR Forums.net
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post #1 of 14 Old March 22nd, 2017, 09:24 AM Thread Starter
 
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Engine choking at cruise speed

Hey Guys, I've tried searching around for a bit and I've seen similar problems on here but most are at WOT. This seems like the car is running out of gas or not getting enough air. The engine kinda chokes out for a second, goes away chokes out, wash rinse repeat. This seems to happen at near mid speed mid throttle, where I'm thinking the clutch might be in a higher gear but not higher rpm. As soon as I stab the gas the problem goes right away. I'm nearing my second service level and I've got about 1,000 miles on my 2015 rzr.

Anyone experience anything similar? Did anyone have any luck going to dealer? I've got the extended warranty, but nervous about taking it in as I have the last trip of the season coming up in a couple weeks.
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post #2 of 14 Old March 22nd, 2017, 12:04 PM
 
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Re: Engine choking at cruise speed

Tps sensor ? Any codes come and go?


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post #3 of 14 Old March 22nd, 2017, 12:08 PM Thread Starter
 
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Re: Engine choking at cruise speed

Not that I've seen.. at least they dont stay to a stopping point.
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post #4 of 14 Old March 22nd, 2017, 02:41 PM
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Re: Engine choking at cruise speed

Fuel pump? Sounds like it may be possible fuel pump isn't generating enough pressure.

2016 XPT
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post #5 of 14 Old March 22nd, 2017, 02:48 PM Thread Starter
 
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Re: Engine choking at cruise speed

But then why would it work like a champ as soon as you give it more gas?
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post #6 of 14 Old March 22nd, 2017, 03:29 PM
 
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Re: Engine choking at cruise speed

Sounds to me,very likely you got a load of junk gas.I'd top it off with premium and see if it will burn out.
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post #7 of 14 Old March 22nd, 2017, 07:53 PM
 
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Re: Engine choking at cruise speed

I'd bet it's the purple wire at the tps sensor
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post #8 of 14 Old March 23rd, 2017, 09:15 AM Thread Starter
 
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Re: Engine choking at cruise speed

Quote:
Originally Posted by RZRNADS View Post
Sounds to me,very likely you got a load of junk gas.I'd top it off with premium and see if it will burn out.
I suppose that's possible based on the fact that i've filled from the toy hauler a few times..

Other than that i only ever put premium in it..
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post #9 of 14 Old March 23rd, 2017, 09:41 AM
 
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Re: Engine choking at cruise speed

Check injector wiring harness right where it plugs into the injectors and Check MAP sensor wires on the passenger side just behind the head. These are both known spots where many have had broken/bad connections in the harness. These are also problems that can cause symptoms you describe. I have fixed 2 MAP sensor harnesses and 2 of my friends have had to fix injector harnesses. Both that I fixed were revealed by the "wiggle test". With engine idling wiggle the wires at these locations. Chances are you will here a change in the way the engine runs indicating you found the problem. Hope its one of these as they are easy fixes.
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post #10 of 14 Old March 25th, 2017, 01:29 PM Thread Starter
 
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Re: Engine choking at cruise speed

Quote:
Originally Posted by mHMFs View Post
Check injector wiring harness right where it plugs into the injectors and Check MAP sensor wires on the passenger side just behind the head. These are both known spots where many have had broken/bad connections in the harness. These are also problems that can cause symptoms you describe. I have fixed 2 MAP sensor harnesses and 2 of my friends have had to fix injector harnesses. Both that I fixed were revealed by the "wiggle test". With engine idling wiggle the wires at these locations. Chances are you will here a change in the way the engine runs indicating you found the problem. Hope its one of these as they are easy fixes.
I think you hit the nail here I believe this is the MAP sensor. but wiggiling these wires will kill the engine at idle. whats the fix?
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post #11 of 14 Old March 27th, 2017, 04:19 AM
 
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Re: Engine choking at cruise speed

Yep that's it. Both that I worked on had broken wires near the connector, under the insulation so I had to cut the wires and fix the connections. Can be kind of difficult because you don't have much slack in the wire to work with but its not all that bad. Squeeze the wires in different spots. You'll probably find a soft spot indicating the break.
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post #12 of 14 Old March 27th, 2017, 06:05 AM
 
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Re: Engine choking at cruise speed

This

https://otbpowersports.com/product/t...epair-harness/
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post #13 of 14 Old March 27th, 2017, 06:29 AM
 
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Re: Engine choking at cruise speed

Yeah good call pay the money. Its worth it to not have to try & fight with the short wires. Saving that link for the next one I run into. Thanks for that.
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post #14 of 14 Old April 4th, 2017, 03:42 PM Thread Starter
 
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Re: Engine choking at cruise speed

Quote:
Originally Posted by CaseyK View Post
I'd bet it's the purple wire at the tps sensor
Wow, that was dead nuts accurate, Thank you so much for the info. I went out this weekend and was showing my group the issue. Sure as shit as I did that, the purple wire broke off in my fingers.. we took the connector apart with a paper clip and cut apart a ring terminal to sacrifice the crimp and crimped the purple wire back on. The problem was gone all weekend. Now I simply need to get it into a dealer and tell them to fix it.. wonder how they will do it...
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