Thursday, December 12, 2013
Radiator Fan Failure in a 1992 Oldsmobile
The radiator cooling fan is vital to the cooling system in a 1992 Oldsmobile. The fan will switch on whenever the coolant reaches a predetermined temperature (200 to 230 degrees F). A properly working fan should come on whenever the air conditioner is switched on, or when the car is in heavy stop-and-go traffic.
Faulty Fuses
Faulty fuses might cause the fan to stop working. Oldsmobile Regency models have two fan fuses: a 10 amp and a 40 amp. The fuses are located in the covered fuse box under the hood. A diagram of the fuses is fixed to the underside of the cover. Check the fuses to make sure they are in good working order.
Faulty Relays
Faulty fan relays might cause the radiator fan to stop working. The relays are located in a covered relay panel. The underside of the cover shows a diagram of which component is operated by the given relay. The relays are located on the drivers side of the radiator for the Oldsmobile 98 and 88 models.
Coolant Temperature Sensor
A faulty coolant temperature sensor can cause the fan from spinning. Most properly functioning General Motors coolant sensors have a resistance of 1,000 ohms at 32 degree F. The sensors resistance will drop below 200 ohm when the engine coolant temperature reaches 200 degrees F. The sensor sends data to the on-board computer, which turns the fan on when conditions warrant extra cooling power.
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