Question about 1994 Pontiac Sunbird

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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?

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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.

Posted on Jun 26, 2009

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1 Answer

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

1 Answer

Cooling fan relay location


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

1 Answer

Cooling fan not working


I have the same problem few days ago, and still didn't find any solution. Can any one please help?????3

Jul 28, 2011 | 1993 Pontiac Sunbird

3 Answers

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

1 Answer

How to change a radiator


1988–91 Models
  1. Disconnect the negative battery cable.
  2. Properly drain the cooling system into a suitable container.
  3. Disconnect the fan motor and motor connector.
  4. Disconnect the upper and lower radiator hoses.
  5. Disconnect and plug the automatic transaxle cooling lines at the radiator, if equipped.
  6. Disconnect the coolant reservoir overflow hose.
  7. Remove the radiator attaching bolts and brackets.
  8. Remove the radiator with the cooling fan attached.
  9. Remove the cooling fan and shroud from the radiator. NOTE: Check all cooling system hoses for any signs of damage, leaks or deterioration and replace if necessary. To install:
  10. Attach the cooling fan and shroud to the radiator and install the assembly.
  11. Attach the radiator bolts and brackets. Tighten the radiator bracket bolts to 7 ft. lbs. (10 Nm).
  12. Connect the coolant reservoir overflow hose.
  13. Connect the automatic transaxle cooling lines to the radiator, if equipped.
  14. Connect the upper and lower radiator hoses.
  15. Connect the fan motor and thermo-switch wire connector.
  16. Refill the system with the proper type and quantity of coolant, check for leaks and bleed the cooling system.
  17. Reconnect the negative battery cable. Fig. 7: Cooling system components — 1988–91 engines 86833085.gif
1992–95 Models
  1. Disconnect the negative battery cable.
  2. Properly drain the cooling system into a suitable container.
  3. Disconnect the fan motor and motor connector.
  4. Disconnect the upper and lower radiator hoses.
  5. Disconnect and plug the automatic transaxle cooling lines at the radiator, if equipped.
  6. Disconnect the coolant reservoir overflow hose.
  7. Remove the radiator attaching bolts and brackets.
  8. Remove the radiator with the cooling fan attached.
  9. Remove the cooling fan and shroud from the radiator. NOTE: Check all cooling system hoses for any signs of damage, leaks or deterioration and replace if necessary. To install:
  10. Attach the cooling fan and shroud to the radiator and install the assembly.
  11. Attach the radiator bolts and brackets. Tighten the radiator bracket bolts to 7 ft. lbs. (10 Nm).
  12. Connect the coolant reservoir overflow hose.
  13. Connect the automatic transaxle cooling lines to the radiator, if equipped.
  14. Connect the upper and lower radiator hoses.
  15. Connect the fan motor and thermo-switch wire connector.
  16. Refill the system with the proper type and quantity of coolant, check for leaks and bleed the cooling system.
  17. Reconnect the negative battery cable. Fig. 8: Cooling system components — 1992–95 engines 86833086.gif
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Aug 27, 2010 | 1991 Honda Civic

1 Answer

Why is my 1993 pontiac sunbird overheating? Full on antifreeze and oil, new thermostat...haven't checked water pump.


IF OVERHEATING WHILE SITTING AND IDLING MORE LIKELY COOLANT FAN NOT COMING ON CHECK COOLANT FAN FUSE AND RELAY BUT IT. COULD BE FAULTY COOLANT TEMPERATURE SENSOR.LAST RESORT IF EVERYTHING CHECK OUT OKAY HOTWIRE COOLANT FAN.IF RUNS ELECTRICAL WIRE CONNECTOR HAS DAMAGE WIRES.IF FAN DONT RUN YOU HAVE TO REPLACE FAN MOTOR.

Jul 26, 2010 | 1993 Pontiac Sunbird

2 Answers

A/c and car over heating


sounds like your cooling fans are not working. look under the hood with the a/c on and check if your electric cooling fan s are working. they are mounted to the inside of the radiator.

Jul 10, 2010 | 2004 Pontiac Sunfire

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

1 Answer

1994 Pontiac Sunbird LE Sedan radiator cooling fan not working.


57441307
Above is the diagram for a 4 cylinder. It appears that you might have a fusible link which looks like a regular wire instead of a regular fuse. If you have A/C on your car you can turn it on and this automatically should turn the cooling fan on. If I remember correctly these cars have problems with the Coolant temperature sensor located near the thermostat. It will have one yellow wire going to it. You can also try to swap the cooling fan relay with the horn relay or another relay that looks similar under the fuse block. There should be a diagram of the fuses and relays under the cover. Try with the engine off and key out try to turn the fan by hand. If it does not move freely the cooling fan motor is bad. Other than that you will have to bring to a shop to have the circuits tested... Good luck.

Jan 09, 2009 | 2004 Pontiac Grand Am

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