Re: when does it takes for my fan to begin rotating?
Heat your thermostat should be preset about 190 deg. the fan should come on about or just above your thermostat setting . If its overheating more attention .
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To check the fan clutch, drive the vehicle until it reaches operating temperature. stop, turn off vehicle, remove the keys from the ignition. open the hood and reach dowwn to the cooling fan and try to rotate it. if it is spining freely or with very little effort at operating temp then the clutch is bad. if it will not rotate or takes a significant effort it is good.The clutch spins freely at cold start to help the engine get up to operating temperature more quickly by allowing the fan to freewheel. as the temp rises the clutch engages allowing the fan to spin a at RPM allowing the fan to draw in cool air through the radiator. I hope this helps.....
AC or Engine ? If engine it may be the engine coolant temp. Fan switch. Its either located on. Lower radiator or thermost housing. If you can unplug the wire at sensor and ground the wire. If fan runs you need to replace sensor.
the direction of fan rotation will be on the motor body but check that th curved edge ( leading edge) of the fan blade is facing the radiator and that air is being pulled through th radiator. THe motors are dc operation and can spin in both directions and the fans themselves are made to fit in front of the radiator( a/c fan) and blow air through the radiator. So checking these points is necessary
Check and make sure the fan comes on when the ac does, there are 2 fans one for regular cooling and the other for the ac. Also make sure the radiator is clean inside and has been flushed and make sure the thermostst is faily new and in working condition.
you have a fan relay somewhere. It may be stuck on. Its a 5 dollar part once you find it ,, you can rotate it with a look alike. .If rotating it shuts the fan off then replace the bad one.
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