2006 800 Sportsman....I got the overheating problem fixed and now the fan does not cycle correct. It stays on too long...any ideas?

 

Swap the two relays up from the fuse holder. Both are the same,one for power,the other is the fan relay. Crank the engine and get it operating temperature.Check to see if the fan shuts off earlier.If not,a relay isn't the problem. The most common problems on this are still trapped air in the coolant lines or the radiator is dirty especially at the rear around the fan area.Sometimes the radiator has to be removed to thoroughly clean one. If you haven't already done so,lift the front end,remove the cap and let the fan cycle on and off several times to remove any trapped air up through the radiator. Also fan sensors can weaken with age and cause fans to stay on longer. You can simply test the sensor in a cup of boiling water to see if its with in specs. At room temperature(68 degrees or so) resistance on the sensor should be around 2.5k ohms.When sensor probe is hot,should drop to around 0.186 ohms per the manual. Plus you can do an amperage load on the fan motor itself.If it's getting worn,it can stay on longer than normal. Disconnect the connector at the engine sensor. Have your meter set on dc amps.You have to slightly pull the fan harness connector apart to where you can can get the + probe on the orange/black hot wire and the ground probe on the brown wire. Turn the key on. If it takes more than 7 amps for the fan to kick on,time to replace it.Sensor is #1 on the parts break down.Dirt Cheap Yamaha, Polaris, Suzuki & Kawasaki OEM Parts & Accessories – Cycle Parts Warehouse