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the system works like this. The eng has a thermo switch, which sences coolent temps around 185 to 195 fer. it produces a closed circut, which then applys voltage to the rad fan relay. which then handle lots more current, i.e amps. could be a number of things, like thermostat,bad rad cap, thermo switch, fuse, relay,defective fan. or low on coolent. VonJay F Leichtfuss
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∙ 16y ago
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What can make a radiator cooling fan not come on?
Problem with the temp sensor.
Why radiator fan don't go on?
I check radiator fan, and relays and they are good, what can be a problem when my car reaches temperature to open termostat radiator fan does not work
What can cause both radiator fans to not come on?
I have a 1988 oldsmoble cutless cirra wih same problem I have replaced the colant fan switch and the coolant fan relay but to no avail have not solved this problem however the fan on the back side of the radiator does come on when I turn the key off but the fan on the front side of the radiator never comes on any help yet??? You might need a diode wire. *You may have a blockage in the coolent system which can prevent the flow of the hot coolent to the radiator fan switch. Check the temprature of the upper and lower radiator hoses carefully by touch. If the one of the hoses is cool while the other is hot there may be a blockage.
How do you take off radiator fan on 1999 escalade?
Remove the wiring harness from the back of your 1999 Cadillac Escalade radiator fan motor. Remove the radiator fan motor retaining bolts. The radiator fan will come off.
You have got a Corsa 1.0 the radiator fan is not working Where is the problem?
in the pipes going to the radiator or you need a new radiator
You hAve a 350 engine in a 1968 camaro that gets hot when you stop the car what is the problem?
Sounds like a fan or fan shroud problem, but you could also be dealing with a plugged radiator, undersize radiator, or thermostat problem.
Does the radiator fan not kick on a lot you have been working on your radiator and your car hasn't overheated but you never see the fan come on?
Depends on how long the car was running. Let the car run for an hour at idle and if it never comes on, I would check the fan. It should come on at sometime. Check the relay..............I just had this problem on my '89 Beretta. DoratheExplorer
The radiator fan of 2001 Chevy Malibu wont turn on while AC is off What is the problem?
Cooling fan is designed to come on when A/C,defroster, or engine temperature exceeds 235 degrees only
Toyota Tercel is running a bit hot is this all right?
First of all, check the thermostat, the radiator fan, radiator hoses, water pump, radiator leaks. P.s. If you install a radiator fan universal and it don't place really close to the radiator, you can have that problem
Why does engine over heat with air condition on a 1999 Dodge Durango.?
Well I have a 2000 dodge durango and I had the same problem. I didn't know the answer so I kept using the a/c which the car overheated and cracked my radiator. Come to find out the fan for the a/c does not work! I guess there is a radiator fan and a a/c fan. Hope that helps!
How do you fix a radiator fan that does not want to come on?
Check the thermostatic switch
Radiator fan does not come on when hot till you turn heater switch on?
It is important to have a working radiator fan. If it does not work, a person needs to check the wiring and its fuse.
