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Relay is in the fuse box along with the fuse for the fan.. First check the fuse.always check the easist thing first. Inside the fuse box is a list of which fuse powers each item.. refer to the list. If you have a volt meter you can check the fuse.. or just pull it and replace it. There are spare fuses in the box. The small red tool in the fuse box next to then spares, is a tool to remove the fuses. You can disconnect the fan wires at the plug.. the fan runs on standard 12v system power. You can jump 12v to it to see if it will run.. if it does not run than look at the relay and the Temp senser that
turns the fan on.. If you are going to work on your own car i suggest that you purchase the Chilton Manual for the car.. a really good investment.
Check the 60 amp fuse in the under hood fuse block for the rad fan, if it blew the rad fan is probably seizing up and will need replacing, the other posibility is that the coolant temp sensor is not working properly and the computer does not know how hot the coolant is! and may need replacing.
Fill over flow bottle right to the top and run engine....watch for bubbles. If you see bubbles you may have a bad head gasket or a possibly a cracked head.
This allows combustion gases into the cooling system and the system just can't dump that amount of added heat.
Check the rad fan fuse or the relay under the hood.
Is the temp going too high? Check and make sure you are not low on rad fluid (engine cool). An air pocket where the fan temp sensor on the rad is located will not activate the sensor.
Failing that, check the rad temp sensor which activates the fan. If this sensor does not close at high temp...the fan won't work.
The temperature sensor is what usually tells the fan to power on, it should be located near the thermostat in the cooling line, it would be a good idea to check the fuses first and the fan relay.
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