need help, what turns the fan on? new fan and still want come on. thanks for any help.

 

Not 100% on the new ones but on my older 02 it was a thermo sensor. It threaded into the radiator. When it got to a certain temp it kicked the fan on. On the old ones you could pull them out and check the resistance and pu it in a pot of water and as you heat it you can check to see if it is changing.

The new ones may even have a fuse not sure at all though. Good luck

 

On the newer ones the water sensor tells the fan to turn on, Part #4.
Dirt Cheap Yamaha, Honda, & Polaris OEM Parts & Accessories – Cycle Parts Warehouse

 

thanks TLC,does anybody know how i can manually turn the fan on wail its in the atv,the fan work if i put a battery on it. i want make sheer its the sencer and not something else. thanks everyone.

 

Get a toggle switch and an inline fuse and wire it in. If you are going to use this permanently you may want to get a temperature gauge so you know when to turn it on and off.

Just a thought but you didn't just drain all the coolant and refill it. Sometimes air is still in the system and has to be "burped" out. The air will not heat up the sensor and turn it on.

Sorry about the bad advice on the sensor I haven't worked on a new one.

 

well with quad running in park i unplug water temp sencer and fan comes on and runs great , my bet is the sencer is faulty ill be picking one up tomorrow.

 

if unhooking the sensor kicks the fan on(it's designed to do that) then you know the fan is fine and most likley a bad sesnor or maybe connection.

 

hey everyone reporting back, replaced the water temp sencer and that did the trick back on the trail and runs great, thanks every one.