05 700 carb, battery dead, cooling fan runs all the time
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Sounds like the temperature sending unit (either on the cylinder or radiator, can't remember) has failed. That sender is supposed to complete the circuit to the fan ONLY when at a pre-set temperature.
If you unplug the wire from the sender, the fan will stop.
Remove & test to be sure, & replace.
If you unplug the wire from the sender, the fan will stop.
Remove & test to be sure, & replace.
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Your machine shouldn't even have an ECU. You don't have fuel injection. Even if you did, that is a last resort if all else fails. They are NOT cheap.
Sounds like you have some other issues going on. Is your coolant level where it should be? Any leaks? Radiator plugged with mud?
If the sending unit senses high heat, it will run wether or not the key is on.
You need to find out why the machine is overheating first, if it is overheating. Did you plug that sensor back in? There are 2 sensors on my machine, but mine is fuel injected (needs a temp. sensor for the ECU to determine fuel mixture). Usually, the sensor is located in the back of the radiator on one of the sides.
Sounds like you have some other issues going on. Is your coolant level where it should be? Any leaks? Radiator plugged with mud?
If the sending unit senses high heat, it will run wether or not the key is on.
You need to find out why the machine is overheating first, if it is overheating. Did you plug that sensor back in? There are 2 sensors on my machine, but mine is fuel injected (needs a temp. sensor for the ECU to determine fuel mixture). Usually, the sensor is located in the back of the radiator on one of the sides.