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1993 Camry If the radiator cooling fan switch has been replaced what else would cause the cooling fans not to operate when the engine overheats?
Wiki User
∙ 13y ago
What do you mean by ``switch``? Coolant temp sensor could be bad, Fan relay could be bad, or fans could be bad. Is radiator completely full? An air pocket could cause problems.
By switch I mean the temp sensor located on the radiator itself. I have put direct voltage to the fans and they operate. The radiator is new and full of antifreeze. On this particular model there are two boxes with relays and fuses under the hood on the driver's side. Box that is closest to the headlight has one relay listed as fan no1 and the other box has relays listed as fan no2 and fan no3. Which one of these operates the radiator cooling fans? Is there a way to test these relays?
Does engine have another sensor near thermostat housing? This is normally the one that controls the fans. Either way, if sensor has one wire to it , disconnect it and ground it to engine with ignition on. fans should run. If not, it is probably a relay.
If you have air conditioning, the fans will both run when you turn on the air conditioner with the engine running. (At least the 1998 Camry is this way). Both fans run to keep airflow over the condenser coils. If both fans run this way, then wiring, relays, etc. can be assumed to be alright. Then more than likely, your problem is the radiator temperature switch (you will see wires going to a device that
is screwed into the radiator near the bottom, by the lower radiator hose) This switch should turn on the fan when the radiator fluid gets hot. I am not sure this fan will run when the car is turned off but at least you know the wiring and the fans themselves are operational.
Wiki User
∙ 13y ago
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2001 Chevy Malibu only overheats when am not using my AC what could be the cause of that?
Low coolant Defective radiator cap Radiator plugged or air flow restricted Coolant fan sensor defective (should operate fan if coolant temperature exceeds 235 degrees)
Why will the radiator fan on your 1999 jgc not come on when you start your car but works when you run hot cable direct?
A radiator fan is designed to operate only when the coolant is very hot, and the motor is in danger of overheating. You do not have a problem unless the motor overheats after sitting still idling for prolonged periods of time.
98 Chevy cavalier runs hot in traffic or on interstate fine around town replaced radioator last year did not cure it?
When it's running hot you should hear the cooling fan running, if not that is your problem. If the cooling fan does not operate check the fuses, cooling fan relay, cooling fan switch and cooling fan motor. One of them is at fault.
What makes the engine cooling fan operate and what causes it to blow out fuses?
a temperature sensor that detects when the car reaches a certain temperature before it overheats which kicks on the fan to cool the engine. the fan may not be grounded properly which causes the blowing of fuses to prevent a fire.
Why does the cooling fan continually operate when key is in the off position 1998 town and Country?
I am the one who asked this question. After two 2 days the radiator fans failed to come on. The fan relay was defective and I replaced it. Advice; if your radiator fans run continuously (more then 20 min) after the engine is turned off, highly consider buying a new fan relay. That is what I did and when the fans stopped working I had the part handy. The radiator fan relay fan relay is located driver side, between the radiator and the head lights. Remove the air filter container to access it.
Why the engine cooling fan does not operate at high speed which raises the temp in Jimmy 2001?
Clean your radiator with Simple Green or something that gets rid of grease, make sure it doesn't eat aluminum though. Your fan may be working but no air is getting through your radiator.
How do you operate your cooling system in your house?
Turn it on with thermostat
Why does a car needs a radiator to operate effectively?
Not all cars do (eg electric cars). However if the car is powered by a combustion engine then the engine produces heat and this heat must be dissipated or the engine will overheat and cease. This is why combustion engine powered vehicles need a cooling system/radiator.
Why does a car need a radiator to operate effectively?
Not all cars do (eg electric cars). However if the car is powered by a combustion engine then the engine produces heat and this heat must be dissipated or the engine will overheat and cease. This is why combustion engine powered vehicles need a cooling system/radiator.
The blower on a cooling tower will operate whenever the centrifugal pump is on?
no
When stopped the temperature gauge goes up to near high?
There is a good chance that your radiator cooling fan is not working properly. Some vehicles have a mechanical clutch that causes the radiator fan to operate when the vehicle is stopped or at low speeds. These clutches can wear out and need replacement. Other vehicles have an electric radiator fan that is controlled by a thermostat placed somewhere in the vehicle's engine coolant flow. Electric fans can malfunction and not pull enough air through the radiator to keep it properly cooled. The electric cooling fan's thermostat can go bad too.
1996 chey lumina overheating radiator replaced The car continues overheating it lost power when driving then just shut off It contpnues to over heat can it be the catalic converter?
Did you replace the thermostat, and check the water pump? Does the cooling fan operate as it should? A plugged catalytic converter can cause overheating. If above items check out OK you need to check for leaking head gasket.
