I get ten bucks on your coolant temp switch....its a lil sensor that screws into your thermostat housing and tell the fan to turn on.....quick way to test if it is that or your fan is to unplug your fan and connect it directly to a 12v power source...if it turns on then it is 99% your fan switch.....that is the reason my fan stopped working and I have had to replace it on several friends cars as well.