Honda ATV Forum banner
1 - 10 of 10 Posts

·
Registered
Joined
·
19 Posts
Discussion Starter · #1 ·
my buddy's got a 04 rancher 350fe it wasn't running when we got it.we cleaned the carbs drain the gas,new plug fresh oil .. we got it running and took it out on some woods trails for like 2 hours but it started to overheat i think and we couldn't get it to switch gears until we let it cool down we noticed the fan wasn't turning on.. is there a sensor that turns the fan on? any input would be great thanks
 

·
Super Moderator
Joined
·
18,228 Posts
Yea I'm sure there is a sensor but I would check the fuses first or the relay if it has one. you can also probe the wires at the fan and jump it to a battery to make sure the fan is still good.. Also make sure you have the correct amout of coolant in the radiator and overflow bottle.
 

·
Premium Member
Joined
·
6,616 Posts
On my sport quad there is a wire that goes from the fan to a temp. sensor on the front of the case
 

·
Premium Member
Joined
·
23,581 Posts
Just find the temp sensor and unplug the wire from it. Now touch the wire to a good ground such as the engine crankcase and turn the key on and if the fan kicks on, the sensor is bad. If that's not the problem, check your fuses. If the fuse isn't the problem, trying running power straight from the battery to the fan to see if the fan is good, as Moose suggested.

You want have to worry about coolant in the radiator as the 2004 Rancher is air cooled and doesn't have a radiator.
 

·
Super Moderator
Joined
·
18,228 Posts
You want have to worry about coolant in the radiator as the 2004 Rancher is air cooled and doesn't have a radiator.
OOPS my bad I assumed being a uility and it had a fan it would have a cooling system...lol that's good to know.
 

·
Premium Member
Joined
·
23,581 Posts
You want have to worry about coolant in the radiator as the 2004 Rancher is air cooled and doesn't have a radiator.
OOPS my bad I assumed being a uility and it had a fan it would have a cooling system...lol that's good to know.
Yeah, the fan is for the oil cooler.
 

·
Super Moderator
Joined
·
18,228 Posts
AHHH I see I was thinking about doing something like that attaching a small tranny cooler to my frame and finding a small 12v fan but I don't know if I can get a larger powered stator for the 250X I havent really looked either..lol
 

·
Premium Member
Joined
·
23,581 Posts

·
Premium Member
Joined
·
23,581 Posts
If it's a 350 Rancher, the oil thermosensor is what cuts the fan on and off. Here is a picture of where it's located.

 
1 - 10 of 10 Posts
Top