Vehicle & Technical > Defender

Major overheating

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Range Rover Blues:
Are your rads the same size as a RRC?  @cos mine looks fairly clear but the electric fans come on A LOT when off-roading.

V8MoneyPit:
I always used to have trouble getting it to run warm enough. I know, amazing for a V8. Now, with the slightest hint of a traffic jam, up goes the temp and the fans have to work overtime to stop it getting all the way into the red.

It developed a misfire a couple of days after the overheating. Nasty thought of blown head gaskets or burnt valves. But checked CR and, although low (170k miles), all cylinders were holding pressure. Changed points and plugs and all was well. It looks like one of the plugs had suffered from the overheating. Phew!

kevinf:
i experienced the same problem after a off-roading sesion involving lots of muddy water in the end i had to get some thing called tripel x,which is a solution used for etching concrete floors prior to painting,you should be able to get it from any decent valeting company

 apply direct to radiator core leave for 10mins the rinse off with pressure washer.

 remember to wear goggles and glove and work in a well ventilated area

 good luck kevin

Paul:
Be carfull using a presure washer on a radiator. :wink:

V8MoneyPit:
Didn't have a choice at the site. Wouldn't have got more than 200 yards otherwise! But I tend to just use the hose with one of those squirty things (You can tell I'm a keen gardener, can't you?!) on it for the rad. Just takes an age and many attempts to get all the mud out.

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