Vehicle & Technical > Defender

running hot - help

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ian_s:
if the gauge rises to a certain point then sits there without moving, i'd say you havent got a problem. does the gauge actually reach the red at all?

have you fixed any electrical faults recently? just before this started, like a new battery or alternator? or fixed a faulty earth?

JD LWB:
I had exactly the same problem on my One-Ten.

That turned out to be the gauge :D

Although, it was a conversion (defender engine into Td Landy)

TDi90:
exactly the same ocnversion.... but it was converted a while back. before i got her. i have not had any problems before... she used to run at dead on center, but since about 2 weeks ago she rund dead on between the half and the red.

no she never goes up to the red, just sits at between half and red.

muck_truck:
HI,

just joined the forum  :)

My 90 (200tdi) was doing the same after a coolant change (and water pump) and the bottom hose was not getting hot.  

One thing i did was change the water gauge for a tims gauge that reads actuall temperature not just a white section and a red section.  I got it off ebay for about 20 quid cause it was a electric one not capilary.

When i changed the sender unit quite a bit of air came out the housing before water did.  Fitted new sender and gauge and took it for a drive and temp gauge gets upto about 90 degrees and now the bottom hose gets red hot.

i think undoing the sender unit released a air lock that i had no other way of removing cause there is no bleed screws on the termostat housing.

The gauge was 50mm so fits in exact same place as old one.

try undoing the sender unit and letting a bit of air/water out of thermostat housing then put it back in.  Then take it for another drive see if it made any difference.

Cheers
Dan

TDi90:
already changed the sender unit  :wink:

but cheers, and welcome  :wink:

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