Vehicle & Technical > Defender

Viscous Fan Issue

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tim-green:
DID SOME GREEN LANING YESTERDAY, AND THE TEMP GAUGE SAT JUST OVER HALF WAY ALL DAY, THEN ON THE MOTORWAY HOME IT WENT UP TO JUST OF THE WHITE LINE  :? HAD A LOOK WHEN I GOT HOME AND NOTICED THAT THE FAN WAS NOT SPINNING VERY FAST, EVEN WHEN I REV THE ENGINE, SO TO CHECK I GOT A MAGAZINE (NOT LANDY ONE) AND SLOWLY PUCHED IT AGAINST THE FINS WHICH WITH NOT MUCH PRESSURE STOP IT, SO AS THE ENGINE TEMP WAS HIGH AND THIS WAS POSSABLE DOES THIS MEEN A TRIP TO THE LANDY GARAGE FOR A NEW VISCOUS UNIT NEED TO BE ARANGED?
 :cry:

mmgemini:
I've got my crystel ball in front of me but it doesn't tell me which Land Rover you have  :roll:

tim-green:
I always thought that viscous unit on a early defender worked the same way a the latest and greatest :shock: but just in case it a defender 90 200tdi

Wolfie:

--- Quote from: "mmgemini" ---I've got my crystel ball in front of me but it doesn't tell me which Land Rover you have  :roll:
--- End quote ---

No worries, mine seems to be working fine......

Coming through now.........


Yes it's a "LandRover Defender 200TDI CSW FULLY TOYED UP"


Anyway, onto the problem. You say you were laning, any deep puddles? If so it's probably worth trying giving the rad a good clean out first. Also worth checking the state of the fins on the rad, it's of the age where the original is likely to be past it's best, mine gave out last summer whilst towing the racer up the heads of the valleys road.

I would go for cheap options first

Regards

Wolfie

OK I'll admit to cheating and looking at Tim's profile. useful things they are  :wink:

mmgemini:
As Wolfie has said check the radiator isn't full of krap first. The back of the radiator in the cowling as well.

If you suspect thew viscous fan. Remove it. The 200Tdi will run fine without it. Then see what it's like.
Two cheap easy options.

Be aware that the viscous fan can apper to be OK but in fact can run at such a speed that it actually stops the airflow throiugh the radiator.

HTH

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