I knew I would feel at home here.... lol

 

Coolant can travel from anywhere and leak to the back.
Check the coolant lines to the heater on the Plenum.
Check the little hose that goes into the top of the radiator.
Check the radiator is not leaking where the top screws mill into the plastic.
Check that the heater core to radiator connections are good.

Lastly, could be a valley gasket issue - valley gasket seals
intake (Which has coolant in it) to the heads (which have coolant in them).
Best.

 

thanks jfall.. i went through all of that. i do have seepage starting at the TB heater. the hoses and lines all seem to be ok from what i can see. i am debating if i should get the plenum gasket and change the wires, see if i can get a better look while the upper is off.

 

Well if there is so much paranoia I I'm getting there too
Wouldn't it be a good idea to install a water level sensor with a warning light since the disco doesnt have one
I can check my fluids when I drive it but when the wife gets in it she won't Check
Is there something like that out there made for these beautiful rigs
Thanks

 

http://www.digikey.com/Web%20Export/...f?redirected=1

Float style should work. Only downside is it would create another place for a possible leak to occur.

 

Like the rovers need that excuse.. lol

 

Nice this just may work thanks

 

"Wouldn't it be a good idea to install a water level sensor with a warning light since the disco doesnt have one? I can check my fluids when I drive it but when the wife gets in it she won't Check . Is there something like that out there made for these beautiful rigs"
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Great idea, though Rover already thought about it, and remembered too to eliminate it on the Discovery! Explanation: My Classic Range Rover had exactly what you describe, an electronic float level sensor in lid on coolant filler tank that turned a warning light on the dash "on." Some guys use coolant fill tanks from some Mercedes, as they too have coolant level sensor.

 

Agree about the additional potential for another leaking part if another sensor is added.

But a way to do it would be this:

Get a cap.
Put two sheet metal screws into the top of the cap.
Attach two wires to the sheet metal screws.

Put a device onto the wires that reacts to the resistance.

Over a megaohm - no coolant
Lower than a megohm - there is coolant.

Of course you need to build in and account hysteresis to compensate for the coolant sloshing when the level is low.