Xc 800 top end bog

[magnum425]

Hello, I'm a brand new member and this is my first post. I just bought a 2001 xc800 and the temp light comes on at the last 1/2" of throttle then it goes into limp mode. Let off a little and the light goes out and power returns. As the sled warms up it gets worse and happens at lower throttle position. I've checked tps with a homemade tool from this forum and my volt was 3.78, I adjusted to 4.0. Didnot fix the prob. The sled will run 8200rpm when I feather throttle just below temp light turnon. The sled is not overheating, I check with ir thermo evertime and its only running 135-145f. Thanks

 

[BILTIT]

Have you tried changing the temp sensor? Might have air in the system, may need to try and burp it. Coolant topped up?

 

[sled_guy]

Original motor, not updated to have the DET sensor right?

Bet its the temp sensor that is bad. I carry the little bypass resistor that SLP sells that allows me to check it.

sled_guy

 

[magnum425]

Thanks for the quick reply. I am going to city tomorrow for new susp rails and will pick up a new temp sensor. I hope that's the problem. I notice it shares a ground wire with tps. All wires look good. I have ruled out air because I can turn the temp light on and off at will with throttle position. I was just wondering if this is a common problem, or if I have a "never heard of that" issue. Tps volts move up and down smoothly.

 

[magnum425]

I believe this is the original engine. Only 3400 miles.