Also it would help a little more if I knew the model. That wire is then the wire that is switched on and off by the 40 amp relay that uses the electric sending unit in the engine. If they are not, your impeller in the water pump is not pushing the water through the engine. At this point instead of having a constant hot keyed wire and the ground turning the system on and off. If not the switch, your problem is either wiring, earth or fuse.
If you disconnect the sensor, it can be removed with a wrench. The best way to do this is to let your atv run for a while and check both hoses on the engine. They should be close to the same temperature. On the way to Bonneville 2 years ago the fan stopped working half way across Nevada. See diagram for a simplified circuit.
I know that the Cooling Components fans requires a 70amp relay and heavier gauge wiring. . I checked the fan relays and they were fine. The left side of the engine just below the thermostat cover is where the sensor will be. Let me know which sensor you replaced and I can help you a little more if you need. I have purchased a 70 amp relay kit from American Autowire. Remove the seat, and look just below the driver side.
How have you confirmed these temps. Basically this would control the electric fan sender and hot wire coming out of the harness basically this would switch the pink wire on and off. As it turns out the grips were fine, the fan motor was very dirty and having trouble turning as a series wound motor will draw more current to try to get up to speed, resulting in the motor and wiring up to the fan connector burning up. I thought it was the temperature sensor, then I though maybe more wiring was damaged. There will be some coolant that escapes the block when the sensor is removed. Also check the fan switch on the radiator and the fuse.
The keyed hot wire would turn be switching the relay on and off with a constant ground. Why do you think its overheating? Considering you've already proven the fan. I bought the machine used and the previous owner told me he had a electrical issue that he though was related to the heated grips. I have created an image below that shows the American Autowire instructions on top and how I am planning on wiring this up. Riders can bring the heat with DragonFire products.
Tighten new sensor snug, but do not overtighten. When installing new sensor, install some pipe tape to the sensor threads before installing in block. Now since the car is already completely wired and has upholstery finished I am wondering if I can wire this fan in another way to avoid taking out some of the insulation and upholstery on the firewall. ? Bridging this switch with ignition on should power the fan. Backed by a racing heritage that started at Baja and continues today, we are proud to call ourselves hardcore and passionate offroad enthusiasts. We rigged a manual switch as a temporary fix and when I got back I called Cooling Components. I am replacing my current electric fan setup on my 1932 ford roadster with a Cooling Components 1730 fan with shroud.
Posted using the Full Custom H. Replacing it is straightforward as it unscrews with a wrench or deepwall socket. He had taken the machine to the dealer and they disconnected them and installed a new battery and called it done. All that would then be running into the 70amp relay would be the main power coming from the battery cable side of the solenoid on the starter, pink wire coming from the harness, black ground wire and power supplied to the fan. They are electronics, they can fail. There are 2 sensors on the atv, one on the radiator and one on the head. I have seen on occasion the plastic impeller melt.
Thanks for all the advice in advance. I'll try to make this as clear as possible. I would have a constant ground to the main black wire. Sounds like your on the right track. I replaced the fan and the electrical issue disappeared, but the next season the machine started to overheat. I swapped out the circuit breaker and added a fan switch.
They told me if I had a 2 wire fan, I needed a 40 amp relay, a 3 wire fan requires a 70 amp. At this point I would really have 2 relays a 40amp that is already in the harness. Only took a couple months and a few rides to figure out. Our premium accessories are untamed and uncompromising because they are designed, manufactured and sold by people who live the life. Check the hose going to the water pump and the hose coming from the thermostat. Hope this is what you were looking for, Daniel.