i got a 2003 predator 500.. i started it up let it idle and went to the beer store when i came back engine temp light was on and she blowed the cap off the coolant bottle and the fan was NOT running. i shut her down and i was looking around i pulled dipstick in sump bottle and it was over filling with gas. so i got 2 problems. maybe a stuck thermostat and not telling my fan to cut in ??? and fuel in sump maybe caused by carb?? just trying to source the problems any help appreciated

 

Think you got the carb figured out(new needle and seat) and change oil and filter!,but usually not a thermostat problem when you have cooling problems,but more than likely a thermal sensor at the top of the radiator burnt out not allowing fan to kick on,plus check that the fan and radiator are clear,not clogged. Plus you can pull the fan plug and check it with 12 volts direct to eliminate a fan problem.When you replace lost coolant, leave the radiator cap off until the fan cycles on to expel any trapped air in the system. OPT

 

it is a new needle and seat i replaced last year so i guess i may need to check the seat for damage.. i already checked the fan with 12volts it works fine.. can someone tell me the resistance on that sensor so i can check it with my ohm meter?

 

If someone has a Predator manual they can give you spot on resistance specs for the sensor,but you can check its resistance cold and then just place it in some hot water and see if resistance lowers substantially. OPT