[Matli]

I just replaced my viscous clutch, bought a new one but it makes a bicycle wheel sound like, the noise is very loud and can be heard with the bonnet closed. Water pump is still fresh, replaced in february.

Anyone who knows why it's making a noise?

 

[rogoman]

With the engine shut off, spin the fan blades by hand and see if you can hear any unusual noise; it should be quiet; if you hear any noise, it's a bad unit. Also when spinning by hand, the blades should only spin maybe two times then stop. If it keeps on spinning many revolutions, it's a bad unit.

 

[Matli]

Thank you very much, i did do what you said i should do... turned out the alternator was not holding right, it was loose so it brushed against some metal,