Discovery 2 V8 2003, after changing coolant for waterless type(not evans) Fan clutch went wrong, started with brand new hayden, secondhand Chevy and a new land rover td5 fan. All of these failed on me after two days of replacing them one after another on the day of replacing they all were fine but on the second day it stop working all three of them notice by temp creaping up so found out all of them broke, spin freely the sleeve is not loosen. What could it be please? bad water pump? I replaced the water pump about 1000 miles ago and this seem to be in good shape.

Thanks!

 

Only thing that touches it is the Water pump (unless there's some other obstruction in the shroud), or you got 3 bad clutches. Even so, unless the shaft is bent, not sure how a bad water pump would kill a clutch that fast.

Perfect opportunity to upgrade to a temp-controlled electric fan

 

well on a 2003 isn't the fan and clutch one unit? did you up/down grade to a 99-02 unit?
is the belt routed correctly?, did you bolt the fan onto the clutch in the right direction?
all three clutches after just one day will just spin like a windmill?

in a rare instance i have see the impeller come off a W/P, but that's rare.

 

I did have both one unit as you say and a seperate fan and clutch, both fail. Impeller in good shape too, belt routed correct and fan was on the correct side. Everying was just fine till changed the coolant.....

 

what type of waterless coolant as you using? and what are your actual temperatures?

 

Japanese brand, I think it similar to Evans, the actual temperature is between 205-209 at 70 mph as soon as red light it creating up due to fail fan clutch prior was 192-193 also at 70mph..I'm running out of fan clutch

 

at 70 mph your clutch fan is doing nothing the truck relies on the ram air coming thru the grill to cool it.

 

update

decided to flush out the coolant totally replaced with 50/50 and also put in TD5 fan and she drive like a dream!