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Replace fan switch - 1988 Toyota Pickup

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2 Answers

How to check fan blower switch I need diagram of the switch


id find blower motor and hit it with a hammer if it turn on its bad also look at the wire to the resistor they melt down if its bad put new connector and resistor in iv done a few

Mar 04, 2015 | 2005 Chevrolet Silverado

1 Answer

Cooling fan switch


It is not necessary to replace the thermo-switch when replacing the radiator. The switch can be replaced separately.
The fan switch is located under the sound box of the air cleaner. It is 2 pin connector. Pull the connector out by pressing the lock which attached to it and short the two pins with a thin auto wire temporarily. Switch on the ignition. The fan will become on. Drive it and see if runs hot.
If the temp reads OK, replace the fan switch. If the problem persists, diagnose the other issues which are concerned with the overheating problems.

May 07, 2013 | 2003 Honda Civic

1 Answer

A/c blower stop working all speeds, check have power, ground out speed sensor and fan comes on, replaced speed sensor, now fan just works on high when wiggling fan switch, I replaced fan switch, now...


Depending on the year and model, you should have a resistor that controls fan speed. Not sure what a speed sensor is.
On most import cars, the speed is controlled by the ground circuit. If you have power and the fan will run if you ground it, check the fan switch again and the resistor. Then look at the ground for the switch.

Jul 17, 2012 | Hyundai Santa Fe Cars & Trucks

1 Answer

What Switch or control makes the radiater fan come on? and need the diagram for the radiator control switch, 1993 saturn sl2.


Ok. The way your system is set up,you have a fan switch located in the engine block,usually near the top.That fan swtich sends the voltage to the fan motor or to a fan relay then to the motor.You can jump the fan motor directly to make sure the motor itself is not burned out by unplugging the motor and running a jumper wire from your battery pos terminal to the terminals on the fan motor itself..If you have checked the motor and it does work,then the easiest thing to do is simply replace the fan switch.You should have a Coolant temp switch and a radiator fan switch and possibly and Radiator fan relay.I would try the radiator switch first,then replace the relay.The coolant temp sensor is for the computer and usually doesnt tie into the radiator fan switch.try that and repost.Good luck

Aug 23, 2011 | 1993 Saturn SL2

1 Answer

93 century cooling fan dose not run


First check fan fuse and relayand switch.You can change relay with another with the same part number to see if that relay is bad.Then check power to and from fan switch if switch has power coming in and not going out then your switch is bad. Replace switch.If fuse and relay are good check for power at the fan and if you have power at the fan then that means that your fan motor is bad,Replace fan motor.HOPE THIS HELPS!!!

May 04, 2011 | Buick Century Cars & Trucks

1 Answer

Ive ford ikon 1.8d car. The engine fan starts as soon as i switch on the battery and runs till i switch off the battery. also there are sparks near the switch in the hood when i start the engine.


you need a new fan switch for the engine fan.
with the engine off and the battery cables disconnected from the battery - replace the switch.
if the ( "sparks near the switch") is the fan switch check the wires when you replace the switch.
if these ("sparks near the switch ") are another switch check those wires for frays and tighten or repair.

Apr 02, 2011 | Ford Fiesta Cars & Trucks

1 Answer

Replace fan speed switch


Before you replace the fan speed switch...make sure you check the fuse...then check the motor...and finally check the resistor assembly...the resistor assembly controls the different speeds of the fan motor by allowing the switch to put different resistors in and out of the circuit to reduce the fan speed...it is usually located on the heater housing near the fan motor..they are a common failure...the switches don't fail as often

Jan 20, 2011 | 2002 Pontiac Sunfire

2 Answers

Fan continues running after turning off ignition


HI. This will, generally, be the result of the cooling fan switch.

The cooling fan switch on most electric fans monitors coolant temperature signals from the engine control computer. When the engine is cool, the switch opens to keep the fan from spinning. When the engine is warm, the switch closes, thus, turning the fan on for cooling.

I would advise to Inspect the cooling fans(thermal switch),wires and connections. Cooling fan switch problems are often caused by faulty wiring or loose or corroded connections rather than the failure of the switch itself. If the wires or connections are bad, replace them. If you think the switch is defective, it should be tested.

The electric fan cooling switch, or thermal switch, can be tested by placing the element in a bucket of water. Heat the water to approximately 207°-216°F (97°-102°C) and connect the switch leads to an ohmmeter(make sure to keep the switch leads out of the water). The switch should have no continuity until the temperature reaches this level. Let the water cool off below 207°F (97°C) and the switch should lose continuity. If the switch has no continuity at any temperature, replace it.

NOTE_The thermal switch is located on the top of the radiator, usually on the passenger side.


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Dec 16, 2009 | 1998 Volvo C70

3 Answers

Cooling fans will not come on


Hi,

Fan Relay switch is stuck open. This of course assumes your temperature sensor is working appropriately. Which I assumed since you seem to know that the engine is running hot.

Replace the fan relay switch. The relay switch is tripped when the temperature sensor tells the computer the engine is too hot.

Until you get the relay switch replaced, you can either by-pass the relay switch and directly connect the fans to the battery, or turn on your A/C ALL the time and use it at a minimum setting. This will keep the cooling fans running at all times.

Hope i helped you.

Thanks for using ' Fixya ' and have a nice day!!

Jul 26, 2009 | Volkswagen Jetta 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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