radiator fan problem Options

[johnnybravo04]

Very unusual problem with a 1998 gt . My car was runninig hot and i pulled over and sure enough my radiator fans were not coming on. I replaced the relay to fan # 1 and same problem still accured. Next I checked the engine coolant temperature sensor located on the lower portion of radiator and when the ignition is on and the sensor is unplugged the fans come on. I then replaced the coolant temperature sensor
and the same thing happened. If sensor is plugged in the fans will not come on but if it is left unplugged the fans run constantly as long as the ignition is on. Does anyone know where the problem might be. Also does anyone know if it is fan #1 fan #2 or fan #3 relay that controls the radiator fans. Tahnks for the time and help it is greatly appreciated

[Bitter]

you might try testing the relays, its pretty easy. all you need is
some wire
some crimp on female spades
a light bulb
a power supply

supply power to terminals 85 and 86 and with the light bulb hooked to terminal 87 and ground to terminal 30 then power attached to the free end of the bulb it should light. alternatly you could put the relay on the power side of the circuit instead of the ground side.

http://www.bcae1.com/relays.htm