P38 Diesel OEM brand of radiator fan

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I'm afraid of ending up with the same problem I have now.
Mine cools fine. But the noise is what annoys me.
It was replaced new, about five years ago.
It seem like it is always on. The viscous coupling is always making too much "drag" even in cold.

As far as I know it should be:
1 a bit of drag at engine start
2 completely loose after a couple of minutes of running
3 completely on at designated radiator temp and again off after college down.

My engine sounds like an old Toyota Hiace.
 
rfsimoes said:
It seems that the OEM brand is Borg Warner.
A Land Rover original fan has a "bwcs" marking on the blades and here, someone posted "If there bwcs is a borg warner".
Click to expand...

Genuine fans do indeed have BWCS markings embossed on the fan blades along with LANDROVER. But if you want one of those it will cost you a lot of money. See this. http://www.rimmerbros.co.uk/Item--i-PGG101290
 
I noticed it stated this item has been superseded so it's possible the one you have is faulty so they have upgraded to this item...or more likely, someone quoted a cheaper cost for manufacturing and they superseded to that....
 
'Morning,
My fan did the same. It is apparently something that can happen to the waxy oily stuff (that is viscous). Goes a bit thick with age (much like myself...) I had also had a problem with the air con condenser so took the opportunity to have a sort out in that area. All surprisingly easy, apart from initially getting the fan nut loosened. I took the fan assembly and cowl off completely, took the condenser out and refitted the air con fans for cooling if needed. (I just disconnected them, took the relays out and put a switched wire to them so I could turn them on if it got too hot.)
Ran around for a few days and the temperature on the guage was the same as ever, around midway. I sorted the condenser and have put it back in, remounting the fans on it. Even with the air con condenser in front the temp is still fine. Been doing all the usual motoring around, high speed longish runs, around the houses and even across the fields with a trailer on - and the temperature has hardly moved. Conclusion is - I don't need a fan. The only proviso is that I haven't had to sit in traffic for any length of time, not sure if that would be a good idea...
 
plumbfisher said:
'Morning,
My fan did the same. It is apparently something that can happen to the waxy oily stuff (that is viscous). Goes a bit thick with age (much like myself...) I had also had a problem with the air con condenser so took the opportunity to have a sort out in that area. All surprisingly easy, apart from initially getting the fan nut loosened. I took the fan assembly and cowl off completely, took the condenser out and refitted the air con fans for cooling if needed. (I just disconnected them, took the relays out and put a switched wire to them so I could turn them on if it got too hot.)
Ran around for a few days and the temperature on the guage was the same as ever, around midway. I sorted the condenser and have put it back in, remounting the fans on it. Even with the air con condenser in front the temp is still fine. Been doing all the usual motoring around, high speed longish runs, around the houses and even across the fields with a trailer on - and the temperature has hardly moved. Conclusion is - I don't need a fan. The only proviso is that I haven't had to sit in traffic for any length of time, not sure if that would be a good idea...
Click to expand...

Without a fan, sitting in traffic on a warm day after a high speed run as the engine tries to get rid of latent heat, you would soon find out why a fan is fitted.
 
Yeah, like I said that was my only reservation. Datatek reckons the air con fans on a thermostat control is a good mod. I have still got it wired so I can switch them on if the guage goes up - just haven't had to try it yet!
 
plumbfisher said:
Yeah, like I said that was my only reservation. Datatek reckons the air con fans on a thermostat control is a good mod. I have still got it wired so I can switch them on if the guage goes up - just haven't had to try it yet!
Click to expand...

On pre MY 1999 diesels maybe used as a backup to the viscous. But 1999 and on diesels have this facility built in.
 
Think what happens after a run. You pull up, (let the engine idle a bit to oil the turbo), then turn it off. All the residual heat disapates. It is only when the engine is still running (making heat) that it could be a problem.
 
plumbfisher said:
How so Wammers? Mine is 2001. you mean this mod is already in place?
Click to expand...

Yep. Look at your cylinder head, to the rear you will see a black temp sender. In an overheat situation it switches the aircon fans on to assist cooling. Aircon fan assist was fitted to petrol engines only previous to 1999. In MY 1999 was added to the diesels.
 
Excellent! Thanks. I can do away with my less than pretty wiring/switch.
I'm still (after three years) at the soppy honeymoon stage where I'm delighted by discovering more of the good things about these motors!
:)
 
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