Question about 1998 Oldsmobile Silhouette
My 98 olds van runs great when driving down the road. Back ups or sitting and waiting the temp goes up. After checking the high setting on the cooling fan is not kicking on, have replaced 2 relays. no difference. The fan kicks off. Replaced the fan but that didn't work. the high setting wouldn't kick on with the new fan either. Put a new head gasket on it already. Any ideas? My husband is getting pretty frustrated.
I'm showing three fan relays in the wiring diagram.
The fans are powered by two 30amp maxi fuses. The relays and fan motors are grounded thru the engine computer. The computer takes input from the coolant sensor and the ac control to decide when fans are needed. You would need to know if the computer is grounding the relays, and if not, why not. You may need a scanner to monitor computer output.
Posted on Jun 28, 2013
SOURCE: 1994 Cutlass Ciera Runs Hot
If coolant can be detected inside the car, you need to replace the heater core. After it's replaced, the low coolant light should not come on after the heater core is replaced, and the system refilled. If it does, you need to check further. Go w/ the heater core for now, as it will fog up the inside of the car, and become a safety issue.
Posted on Nov 12, 2008
They should kick in at 218 to 220 degrees,but then they should go off by them selves ,make sure there is no air in the cooling system,and maybe change the coolant sensor,and thermostat,if this problem persist,the radiator would most likely be the problem,if the cooling fans are coming on,it is important they cut off on there own also,this means the engine(radiator)are cooling down,if the cooling fans do not cut off,there is still another problem
Posted on May 10, 2010
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