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The cooling fan does not come on when engine is hot, nor does it come on when the A/C is turned on (which, by the way, does not work either). The 30 amp fuse is good. In the fuse box there are three relays, one for the fan, one for the A/C, and one for the horn. None of these three components work. I find it hard to believe that all three identical relays are bad. There is no sign of overheating (distortion or discoloration) on the relays or the box. This car was loaned to me by friends gone out of town. I drove to work (100 mile round trip at 5,000 ft down to 200 ft and back again) on a 107 degree day with the heater full blast on the way home and made it, but I thought it would be nice to fix it before I give it back. But I don't want to buy manuals and parts just to open a can of worms. I'm thinking maybe I'll just run a hot lead to the dash, install a toggle switch, and connect direct to the fan. Will this work? Or does someone have some ideas of how to find the root problem?
Check to see if the A/C is charged. I had to same problem with my A/C. I ended up installing an after market temerature sensor and relay to the radiator to run the electric fan. Once the A/C was charged the fan started cooling when A/C was turned on. Still, my fan won't run without the aftermarket kit.Check to see if the A/C is charged. I had to same problem with my A/C. I ended up installing an after market temerature sensor and relay to the radiator to run the electric fan. Once the A/C was charged the fan started cooling when A/C was turned on. Still, my fan won't run without the aftermarket kit.
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How hot is it getting in degrees F? Some electric fans won't even turn on, till around 220 degrees F. Does the fan turn on at all?
As far as overheating, does the coolant recovery reservoir fill up in a hurry?
Sometimes after opening up the cooling system, you get air in the system that may cause temp gage to react.
What about your thermostat? Did you check for coolant flow through the radiator? Another thought might be a head gasket issue, I'd check everything else first.
Have the coolant temperature sensor checked or replace.
That sensor is tied in with the cooling fans. When the coolant temp increases it turns on the fan.
It is usually located around the thermostat housing or screwed into the engine block with a 2 or 3 wire connector on it.
REPLACE THERMOSTAT BUT IT SOUND LIKE FAULTY COOLANT TEMPERATURE SENSOR.BUT CHECK COOLING FAN FUSE AND RELAY.IF ALL IS GOOD HOT WIRE COOLING FAN IF COOLING FAN WORKS.PROBLEM COULD BE FAULTY COOLANT TEMPERATURE SENSOR. DAMAGE FAN WIRING OR FAULTY PCM.IF COOLING FAN DONT RUN WHEN HOT WIRED.REPLACE FAN AND MOTOR.
the engines electric cooling fan is not designed to come on when u start the car, it only runs when the engine temp reaches about 225 degrees F, this only occurs after long idle times or very hot weather..
the fan turn on point on this model comes on at a very high temp gauge reading..not far from red or about 3/4 ways up...the engine will run quite a while before reaching this level. It should never go into the red which indicates problems but the design of the system gets it uncomfortably close. I've seen these needing to idle for 10 mins or so before the engine temp reaches the fan turn on point.One good thing about this design is when the fan does come on ,one should see immediate and noticeable drop below half in just a minute or two which indicates a good operating cooling system.
The Cooling fan is Wired in in such a way so as to Automaticly Turn on Cooling Fan If the A/C is Switched ON. If "WITHOUT the A/C on" The Cooling Fan Doen NOT come ON Untill Engine. is @ 210-230 Degrees
There IS a Problem with the Engine COOLING SYSTEM, A Faulty Coolant Temp Sensor Will Cause this Problem. The Cooling fan is Also A Candidate For Testing.
Answering your Quwstion YES The Engine Coolant Temperture Sensor Tells the ECM What the TEMP Is and the ECM Grounds the Cooling FAN Relay to Turn ON Cooling FAN. Temp Sensor is the Usual Culpret, BUT Relay Comes in a CLOSE Second. Hope this Helps !!!
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