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Location of a radiator fan switch

The fan is not working and the thermostat switch needs to be replaced

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Abdul Rasheed

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Replace relay that is UNDER the engine bay Fuse Box. It has no fan switch. Fan relay controlled by ECU.

Posted on Jul 01, 2019

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Fan relay can't find relay on 90 ford tempo. Changed thermostat already. Radiator fan just quit working. Can't find location of fuse box for fan either. Can you post a picture of location? Thanks


i always hook the fan to ignition so when key is on so is fan keeps motor running cooler . the temp switch is easy to locate just follow wires but I always just run it to ignition

If you need further help, I’m available over the phone at https://www.6ya.com/expert/richard_b59056c0c62ecb00

Aug 07, 2014 | 1990 Ford Tempo

1 Answer

Radiator fans will not turn on.


replace fan switch. depending what make vehicle, it could be located
on the side of radiator, on thermostat housing, on cylinder head.

Apr 03, 2014 | Chrysler Grand Cars & Trucks

1 Answer

The cooling fans to the radiator are not working.


This is usually the problem with a fan is the thermostatic switch. Bridge out the thermostatic switch on the radiator which operated the fan. If the fan works, replace the switch. If this does not work, check the wire connections and the relay. Also, with the ignition on, one of the wires on the switch should be live, you can check this with a test light brounded to the body work.

Jan 30, 2011 | 1989 Toyota Camry

1 Answer

Cooling system and thermostat location. having problem with overheating and need to know what could be causing this.


first look to see if anything is blocking the radiator on both sides that may be causing limited airflow. if nothing is blocking the radiator make sure the fan works. let the car warm up and wait to see if the fan turns on when it starts getting hot, but dont let it overheat. if the fan does work then it might be a stuck thermostat. the thermostat is located on the back side of the engine below the exhaust manifold. there is a downpipe for the radiator and there should be two bolts the you have to take off and the thermostat is between those two pipes. if the thermostat is replaced and you still have a problem with overheating it could be internal and i would suggest having it looked at as soon as possible. hope this helps and good luck! i had the same problem and mine was the thermostat. oh and one more thing, if you are going to change the thermostat yourself i would recommend putting the car on ramps at the very least due to the location of the thermostat. i had a lift which makes things a lot easier, but i think that ramps would do.

Nov 06, 2010 | 1999 Pontiac Sunfire

1 Answer

Overheating


Hello, better make sure the fan works because there is a switch on the radiator that turns the fan on when it gets to a certain temperature. It could be the fan or the switch. Your thermostat is not your cap, it's in a different location. (Usually at the engine end of the upper radiator hose) Get the leak check! A good garage can pressure test the system to see what leaks you might have.

Thanks

Aug 10, 2010 | 2002 Chevrolet Monte Carlo

3 Answers

The radiator fan is working fine but the temperature sensor i dont know its locationmy car start overheating sometimes i need help.


The best way to get the exact location for the Temp sensor would be the Haynes Repair manual. As far as your overheating issue goes I would replace the Thermostat and see if that resolves the issue. Make sure the radiator has the correct amount of antifreeze in it.

Jul 01, 2010 | 1997 Saturn SL

2 Answers

Car overheats


The problem of over-heating could be due to one or all of these defective parts:
(i) thermostat
(ii) radiator
(iii) fan relay
(iv) fan switch
(v) water temperature sensor.
In your case, I suspect that your radiator probably is clogged, so needing replacement.

To Replace the radiator:
a. allow the engine to cool.
b. place a suitable container under the radiator, and drain it out by turning backward the wing-nut under it.
c. open the radiator cap to allow atmospheric air to further push down the coolant.
d. with a piece of pliers, depress the top clamp holding the radiator hose. Do the same for the lower radiator hose.
e. remove from the bottom of the radiator and plug wth suitable bolts, the two transmission fluid rubber lines.
f. with a 10-mm socket and wrench remove the two bolts holding the radiator to the front frame.
g. depress the electrical plug at the bottom of the radiator. Remove its thermo switch at the bottom left hand side of the radiator. (replace with new if changing to new radiator) Also notice two rubber cups at bottom of radiator.
i, installation of the new radiator is reverse of removal. Refill radiator with new coolant.

To replace thermostat:
a. disconnect the negative terminal of the battery.
b. drain the coolant into a container, as
explanied above.
c. remove the upper radiator hose from the thermostat housing on the engine block.
d. remove the two bolts from the thermostat housing. Please note the way it was bolted to the engine. Clean its housing and seating areas.
e. fit a new o-ring to the thermostat, and replace with a new thermostat.
f. tighten its bolts to 14-12-foot pounds.
g. Replace the top and bottom hoses back.
i. refill with new coolant.

To replace the fan relays:
a. open the hood.
b. disconnect the negative battery terminal.
c. locate the meduim-size black plastic box on the driver's side fender. This is where the fan relays are. Look inside the cover of the medium-size plastic box to see the fan relay positions.
d. gently and firmly pull out each fan relay. Replace with new ones as needed.

To replace the water temperature sensor:
a. this is bolted to the top of thermostat housing.
b. unplug it from it location.
c. use a 14-mm deep socket to remove the temperature sensor. Replacement is reverse of removal.

Dec 09, 2009 | 1995 Toyota Camry

1 Answer

Radiator fan not working fan is ok


There is a cable connecting from radiator fan to thermostat switch.
Thermostat switch located at near engine block, you can trace it from radiator hose to engine block, there is a terminal connected to thermostat.
To check wheter fan is ok or not, pull out/disconnet the terminal, radiator fan will be turned on, if not, this could be a problem with radiator fan.
Otherwise you should clean terminal or replace thermostat switch.

Sep 11, 2009 | Toyota Corolla Cars & Trucks

2 Answers

Radiator fan not working


Hi. Check the bottom of the radiator or on the side, as you also have a temperature-sending switch. The switch must reach a certain temperature before sending a signal on to the fan relay.

The switch just screws into the radiator.

If you would like to contact me again about this or other problems, feel free to do so.
Bill
ASE Master Technician

Nov 26, 2008 | 1995 Honda Civic

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