2003 700 sportman over heating
#1
#2
If fan doesn't kick on when it overheats,then possibly the thermal sensor located at the bottom of the radiator could be shorted out/faulty(kicks the fan on). You can also check the fan motor directly with with 12 volts if this is the case to see if it works. If fan does come on but still overheats,could be air in the system, or a muddy radiator especially at the back around the fan area, or a faulty radiator cap if spewing out coolant. Hope this helps you get started! OPT
#3
#6
Sometimes mud and dirt can get behind the radiator enough to where its best to remove the fan assembly and flush the radiator thoroughly from the front and then from the rear! If the radiator is clean as you say,then remove the radiator cap,run until the fan kicks on,top off coolant in the radiator and overflow bottle and replace cap. This purges any trapped air. Check that coolant is moving in the radiator to eliminate the water pump impeller as a problem. If still over heats and coolant surges into the overflow tank,the radiator cap could be bad (13 psi rated) and you can get at a lot of auto parts stores.Also possible that the temperature sensor on the cylinder could be staring to fail and sending hot message to the light before the fan comes on?(Have had some do this) STILL think its a partially clogged radiator, air pockets,or cap, if the fan is working properly!I've been wrong before though! Keep us updated! OPT
#7
Sometimes mud and dirt can get behind the radiator enough to where its best to remove the fan assembly and flush the radiator thoroughly from the front and then from the rear! If the radiator is clean as you say,then remove the radiator cap,run until the fan kicks on,top off coolant in the radiator and overflow bottle and replace cap. This purges any trapped air. Check that coolant is moving in the radiator to eliminate the water pump impeller as a problem. If still over heats and coolant surges into the overflow tank,the radiator cap could be bad (13 psi rated) and you can get at a lot of auto parts stores.Also possible that the temperature sensor on the cylinder could be staring to fail and sending hot message to the light before the fan comes on?(Have had some do this) STILL think its a partially clogged radiator, air pockets,or cap, if the fan is working properly!I've been wrong before though! Keep us updated! OPT
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#8
#9
My friend thought his SP700 rad was clean, we took the rad out and the hard to see top half of the rad had baked mud in the fins that look like concrete.
A pressure washer with hot water had to be used, no garden hose with the rad in the ATV was going to get it cleaned out.
A pressure washer with hot water had to be used, no garden hose with the rad in the ATV was going to get it cleaned out.
#10
people just don't realize how bad it can be when the mud isn't just dried in there as it is baked.