Question about 1999 Saturn SL

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My car overheats. I am trying to find the diagram for the fan relay to put power directly to the fan. Any ideas ?

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Hi! Like any other cars, the fan relay is located underneath the hood at the side of the fender on the driver's side. Just follow the wire from the fan to the relay. Are you trying to bypass the relay and connect it directly so the fan will always be open when engine is on? It can help though but Im pretty sure theres a problem why it overheats. Here are some reasons why the car overheats. 1). The fan itself maybe weak not blowing enough air to the radiator. 2). Radiator can be clogged by dirt and rust which can stress out the car's engine. 3). Check if the water on the radiator circulates, if not then its a water pump failure. If the water pump doesnt perform well it will really overheats so a replacement will be advisable. Hope this helps and have a good one!

Posted on Jul 03, 2010

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many things to consider.

first , the fan itself. could be worn out carbon brush that is why it would not run.
verify the fan, remove the socket and put a 12 v directly to the fan and see if it would run.

second, the fan relay. check the fan relay to see if it is doing what it is supposed to do. check if power is flowing from the supply to the motor.

third, the sending unit. make sure the sending unit is signaling the relay to turn on the fan if it is already hot.

tnx 4 uisng fixya,


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