The multi function switch sounds bad as far as the wipers / signal. The same switch runs both. As far as the overheating, you first need to make sure the fan motor is good. Run a jumper wire from the battery to the fan motor to see if it runs. If it does, check for power to it when the engine gets hot. If there is no power, then you have to trace it down, relay, PCM, temp sensor.
Sunday, February 6th, 2011 AT 1:30 AM