Temp gauge acting up ? 2015 viper

[Marco Paradis]

Maybe air lock ?

 

[FrozenTows4]

How's it acting up? Trail conditions play a huge role. Last weekend, on one trail, I saw a consistent 158f/70c. Different trail 177f/80c. Another freshly groomed trail 195f/90c. Cross the lake and down to 165f/74c. These things can be all over the charts depending upon conditions.

 

[Marco Paradis]

How's it acting up? Trail conditions play a huge role. Last weekend, on one trail, I saw a consistent 158f/70c. Different trail 177f/80c. Another freshly groomed trail 195f/90c. Cross the lake and down to 165f/74c. These things can be all over the charts depending upon conditions.

How's it acting up? Trail conditions play a huge role. Last weekend, on one trail, I saw a consistent 158f/70c. Different trail 177f/80c. Another freshly groomed trail 195f/90c. Cross the lake and down to 165f/74c. These things can be all over the charts depending upon conditions.

 

[Marco Paradis]

80 f to 200 f ? When riding and it move real quick on the gauge

 

[upei93]

This was my sled...sled ran fine for first 10 miles then stopped to gas up and when I got going again the temp gauge would read normal 170f then all of a sudden drop to 20f and red cold temp light would come on...I would pull over turn it off then start it and go...did this a couple of times then stopped douing it for 6-7 miles (I was alone so needed to make it to buddy's camp) then it started again...Never overheated the temp gauge would flicker between normal temp and cold temp...ideas?

 

[Turtle]

Most likely it's a bad temp sensor. Had the same thing happen to me. Sled would be running normal temps, then immediately would drop to a cold temp. Which would then tell the ECU that the engine is cold and would limit RPM. Then it would jump back to normal temp and engine would run fine. Had this thing jump around on me while riding the sled. It would jump around so quickly it was hard to figure out what was going on. I tested the resistance on the temp sensor back in my heated shop. Shop was at 65 deg F, and according to the resistance conversion on the temp sensor, the sensor said it was below 30.

Got my temp sensor replaced under warranty. No issues since (that was 2 seasons ago).

 

[upei93]

Most likely it's a bad temp sensor. Had the same thing happen to me. Sled would be running normal temps, then immediately would drop to a cold temp. Which would then tell the ECU that the engine is cold and would limit RPM. Then it would jump back to normal temp and engine would run fine. Had this thing jump around on me while riding the sled. It would jump around so quickly it was hard to figure out what was going on. I tested the resistance on the temp sensor back in my heated shop. Shop was at 65 deg F, and according to the resistance conversion on the temp sensor, the sensor said it was below 30.

Got my temp sensor replaced under warranty. No issues since (that was 2 seasons ago).

Thanks for the reply...exactly what is happening to me...forgot to mention limited rpm...and no codes right?

 

[Turtle]

Thanks for the reply...exactly what is happening to me...forgot to mention limited rpm...and no codes right?

Yes - limited rpm when the sensor acted up. That's because with the hosed up sensor, it tells the ECU that the engine is cold. On a cold engine, the ECU will limit rpm to just below clutch engagement.
I can't remember if I had a code or not.

 

[upei93]

Thermosensor Assy 8JP-H5790-00-00...this the one?

 

[Turtle]

Thermosensor Assy 8JP-H5790-00-00...this the one?

Yep. That's it!