R33 Gts-t Engine Fan Not Turning Off!

[JL]

Hi Guys,

was wondering if anyone else has had this problem, from the moment I start my car until the time I turn it of the main engine fan is on constantly. I thought my coolent might be low as most engines fans will auto turn on if the coolent level is low as a pre-caution for the engine. The coolent level is fine. The only thing that I have been doing differently is not driving it much as it is for sale but dont think this would have anything to do with it.

Was thinking it may be a sensor but not sure. Any help will be greatly appreciated.

Cheers

JL

Edited May 26, 2009 by JL

[DLOOOK]

which fan do u mean? the one closest to the engine? its constantly on driven by the engine

[JL]

Yeah sorry didnt explain it very well, yeah not the thermo fan but the one conected to the engine, but I hear huge fan noise as soon as the revs pick up. It has never done it before.

Edited May 26, 2009 by JL

[Chrisrotary]

Maybe try turning your a/c off or anything related to it. the air conditioner condenser has suplimentry electric fan to help cool the gas inside and "condense" it. otherwise probably a faulty switch or sticky relay. if it stops when the car is off thats the main thing.

[BezerkR32]

the engine fan has a fluid filled clutch on it. When hot air passes through the radiator it melts wax in the clutch which runs into a chamber which locks the clutch up intern driving the fan.

you should be able to free-spin the fan with the engine off when cold. It will have a litle drag but should not be tight or locked. If it is the clutch is F#cked. They are about $110 after-market. have replaced a few. it has nothing to do with air-con or any sensors as it is mechanical.

Yeah sorry didnt explain it very well, yeah not the thermo fan but the one conected to the engine, but I hear huge fan noise as soon as the revs pick up. It has never done it before.

[JL]

Spot on Bezerkr32,

It is the Viscus fan cupling/clutch, as you said when the viscus oil heats up it releases the clutch and allows the fan to spin freely, and that is stuffed just from age so it is not releasing and spining with the engine revs hense the car sounding like a bus!!!. Have purchased a second hand fan and cupling for $100 and fitting it this weekend.

Thanks for all your suggestions those who posted.

Cheers

Jamie

Edited May 30, 2009 by JL