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if it a electric fan it may just be bad now if it runs of the water pump it may be a bad fan clutch. or it could be the thermostat. or fan relay.
It could also be the sensor in the computer has gone bad which means you need a new computer.
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∙ 12y ago
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Your fan wont turn you changed thermostat sensor and relays and you know the fan works you hot wired it?
Some of these fans will not engage until the heat sensor gets to a certain temperature. The engine needs to be hot for the fan to come on.
Why might the engine fan not come on when the engine gets hot?
Blown Fuse, Bad relay, bad fan motor.
What causes engine cooling fan not to work?
your fan does not come on unless your car gets hot.if you lift your hood when you start your car the fan will not be running .but when your car gets to hot it will come on.or you may have a short in it.....check out
Rubicon fan wont come on?
replace the fan motor
Why wont the fan come on in a 2002 Chevy Venture?
Which fan? there are 4.
Why won't 94 dodge shadow electric fan come on when engine gets hot?
Fuse in fuse block, Fan relay on drivers side strut tower or the fan itself is dead.
Why wont your 2004 Chevy cavalier cooling fan stay on?
The engine cooling fan is not suppose to stay on. The temperature sensor on the motor tells the fan to kick on if the motor ever gets too hot, usually comes on at 210-215 if I remember right.
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
1999 ford expedition front fan wont come on?
Which fan are you refering too? cooling fanHeater fan
Why would the fan on a 2000 dodge neon work somedays and not the next?
I assume your talking about the engine fan, not the cabin fan. The engine fan is designed to come on only when the engine gets hot enough for it. I.E. the fan won't turn on in the dead of winter, or if you just start your car. The fan will turn on whenever the A/C is turned on though, as part of the Air cooling system.
Does the engine fan need to be running whenever the engine is on?
yes, the engine fan need to b running whenever the engine is on the fan is to cool radiater, it only comes on when the engine gets to warm, to cool engine down.
What can cause the cooling fan not to come on when you turn the AC on but it does come on when the engine gets hot - the engine coolant temp sensor has been changed and the relays have been tested?
possibly reversed wiring or perhaps a bad PCM, the PCM is supposed to override the sensor and turn on the fan anytime the AC is on.
