Viscous fans (730i E32)

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   Having problems with overheating when in traffic.
Checked all necessary parts i.e. water, thermostat, hoses, rad.  Could it be the viscous fan?
If so can anyone tell me how the viscous fan works?

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Mick7 Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 06-February-2004 Location: United Kingdom Status: Offline Points: 6	Topic: Viscous fans (730i E32) Posted: 06-February-2004 at 17:46
	Having problems with overheating when in traffic. Checked all necessary parts i.e. water, thermostat, hoses, rad. Could it be the viscous fan? If so can anyone tell me how the viscous fan works?

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kbannon Members Profile Send Private Message Find Members Posts Visit Members Homepage Add to Buddy List Admin Group E39 525i Sport Individual Joined: 09-October-2002 Location: 64 Zoo Lane Status: Offline Points: 15508	Posted: 06-February-2004 at 18:17
	www.totalbmwmag.co.uk/HandsOn/TechDec02.PDF to see if it is the fan clutch as you think then get yourself a newspaper and fold it up. With the engine running carefully see if you can stop the fan turning. If you can - its knackered!
	Current: 2009 E60 520d "Sport" tractor Previous: 1989 E30 320i SE 1997 E39 523i 2003 E39 525i Sport Individual

Old shape! Members Profile Send Private Message Find Members Posts Add to Buddy List Really Senior Member I Joined: 08-January-2004 Location: United Kingdom Status: Offline Points: 497	Posted: 16-February-2004 at 10:55
	I am not having any overheating problems. However, I can stop my fan with very little force, when the engine is warmed up. (Not tested it cold). So, I assume my Viscous clutch is knacked. But, if I'm not having an overheat problem...I've no need to worry..no? Again I assume, the fan should be well clutched and nigh unstoppable when the engine is warm, so it can "fan", but cold it should be stoppable with a newspaper?
	Paul DH 1994 E38 "Proud owner of a "3/4 engined E37.9 that's almost a real car with real paint...WITH 6 WASHER JETS!" 1989 520i (E34) Gone 1988 320i Coupe (E30) Gone 1995 520 Estate (E34) (Wife) 1992 320i SE OBC (E36) (Wife) Gone 1988 320i Saloon (E30) (Wife) Gone

badri Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 17-February-2004 Location: Israel Status: Offline Points: 1	Posted: 18-February-2004 at 12:07
	i had the same problem. try removing air pressure from the water system. it workd great for me.

Old shape! Members Profile Send Private Message Find Members Posts Add to Buddy List Really Senior Member I Joined: 08-January-2004 Location: United Kingdom Status: Offline Points: 497	Posted: 23-February-2004 at 15:14
	I agree, now that I've had a similar problem!
	Paul DH 1994 E38 "Proud owner of a "3/4 engined E37.9 that's almost a real car with real paint...WITH 6 WASHER JETS!" 1989 520i (E34) Gone 1988 320i Coupe (E30) Gone 1995 520 Estate (E34) (Wife) 1992 320i SE OBC (E36) (Wife) Gone 1988 320i Saloon (E30) (Wife) Gone