Question about 1987 Buick Century

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Where is the relay for the radiator fan?

I have a Pontiac Sunbird le1991 v6 engine, we have replaced the fan but the fan does not come on.

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  • 139 Answers

Try changing the fan relay switch.

Posted on Jul 29, 2009

  • dirtracer7 Jul 29, 2009

    Try changing the fan relay switch.

  • dirtracer7 Jul 29, 2009

    Try changing the fan relay switch.

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1994 pontiac sunbird radiator fan not working


Unplug the coolant fan & put battery voltage, directly to it

If it works, in either direction, then get a wiring diagram
& work on testing the control side of the circuit

You can check all fuses, but replacing a blown fuse,
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Where is the fuel pump fuse location 91 pontiac sunbird


What motor? Fuse is located in a different place on the 4cyl. vs. the V6. The four cylinder fuse is in the fuse box under the dash. The V6 engine the fuse is in a in line fuse holder next to the fuel pump relay under the hood, diverside rear at the firewall, there may be a plastic cover on the relay and fuse.

Sep 03, 2014 | 1991 Pontiac Sunbird

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What would cause the radiator fan on a 1992 Pontiac Sunbird to not come on?


Start with easiest and cheapest. Tap the fan motor with a wrench, see if it starts. If so , weak motor. Check wiring. Sometimes the wires split. Replace thermostat. Probably under 10 bucks. If nothing above works, may need to have your computer tested.

Jun 04, 2014 | 1992 Pontiac Sunbird

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The relay should be in a group on the firewall or the fender. You may need a book to figure out which one is for the radiator fan.

May 09, 2013 | 1992 Pontiac Sunbird

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My radiator fan is not working and I cannot find any of the relay fuses I have seen in other cars for this type of problem.


Follow the wiring back from the fan motor, the relay is often found at about the height of the bottom of the radiator on the inner fender. Check that connection is clean and free of corrosion. Check that the fan works by taking two trailing wires directly from the bettery terminals and connecting then to the fan motor directly. Use a voltmeter and check the voltage at the relay when engine is cold and shortly after the radiator top hose from the engine becomes hot (the coolant sensor should have signalled for the fan to switch on at this time). No voltage indicates a break in the circuit or faulty sensor. Voltage but no fan indicates faulty relay

Apr 03, 2011 | 1994 Pontiac Sunbird

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The car(pontiac firebird 3800 v6)overheats and


Check to make sure the radiator fan is coming on watch it for ten minute as it runs it should come on if it doesn't replace the fan relay or the fan coolant temp senson located on engine block upper area of engine.

Jul 14, 2009 | 1999 Pontiac Firebird

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I have a 1993 pontiac sunbird, the radiator cooling fan doesn't go on to cool the motor. I checked the fan and it works. Is there some type of sending unit temprature switch to the fan?


There is a temp sending unit on the engine, it sends a signal to the engnie computer which provides a ground to turn on the fan relay. You might want to check the relay for the fan, I believe its on the passenger side just aft of the strut tower but dont quote me on that.

Jun 25, 2009 | 1994 Pontiac Sunbird

1 Answer

Coolant Fan Wont Turn On


if you replaced the relay because it melted that means there was a short in that circuit. if the water pump is circulating the coolant properly then there is either a faulty temp sending unit on the intake manifold. a faulty sensor on the fan itself, or there is a blockage in the system. if all of these are ok then that means that you have a air bubble in the system. to correct this start the engine with the radiator cap off turn your heater on to high fan high heat and run the system. when the engine reaches temp the upper radiator hose should get real hot ,if it doesn't then the thermostat did not open. replace the thermostat. if it gets hot then let the engine run for a bit top off the coolant shut vehicle down and replace radiator cap this should solve the problem

Apr 26, 2009 | 1994 Pontiac Sunbird

1 Answer

Where is the fuse for the fan - 1992 pontiac sunbird


there is a fusable link attached to the battery and there is a AMT fuse in the box in the car, that says ac/heat. (I think) You may have to replace your relay or some other part of the cooling system.
Another thing is to check your fan and see if it works by direct connecting it to the battery. HINT- test the fan in an upright position, like it sits in the vehicle.

Apr 10, 2009 | 1992 Pontiac Sunbird

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