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All wires checked out good, sensor was replaced earlier this winter. I did notice it takes like 3-5 starts for the computer to realize the sensor is not plugged in giving an 85 code.

Anyone ever figure this issue out? I have a similar problem

I have a 12 xtx the problem I have is it cutting out going down the trail like you hit the kill switch. If the rpms are up it will usually catch itself and keep going. I did get a code 30 once last ride out. I grounded the pressure sensor wire and it cut out with no code 30. The sensor was...

I will try that, goin on a trip next week so I should be able to really see how much coolant it's using.

No, if I keep the coolant full no issues. The only reason it overheated because coolant went low. The temp light was going on and off so it wasn't getting to hot .

Low coolant, if I keep it full it's fine, no overheating problems.

Nope, I've rode the sled twice, the first trip it started overheating about half way through the day. Hauled it back to camp to fined it low on coolant. The second trip brought coolant with me and had to fill the overflow after 75 miles

Not puking out of the overflow , it's emptying it.

I fill the radiator and the overflow, after about 75 miles the overflow is empty and the radiator is going down.

Calling all Yamaha gurus, I have a 12 nytro with an mpi blower. The problem I'm having is coolant loss. Pressure tested the coolant system to 20 psi for 24hrs no loss. Ive done a cylinder leak down test with no issues found. Oil is clean ,no leaks , and no smoke. Any input would be greatly...