I have a '99 DII, and it drives like a dream, despite having had a hard life in the hands of previous owners. I drive it 2,500 miles a month, city, interstate, and off road. Never let's me down. Everything works perfectly except the cruise.

Now the problem:
I've been losing coolant (lots), but I never see it on the ground, and it never runs hot as long as I keep the coolant tank topped off.
Today I searched under the hood and found a pool of antifreeze baking onto the top of the left side valve cover right around a quarter inch tube that comes out of the valve cover into the intake near the throttle body (honestly, not sure what this tube does).
Why would antifreeze be coming out of there? I fear a blown head gasket, or bad head, but it always runs cool, and the dipstick always has clean oil on it with no tell-tale foam or milky substance.

Any thoughts would be greatly appreciated.
It's such a darned good driving vehicle I'd hate to have to junk it.
Thanks in advance!

 

Throttle body heater is leaking, there are two small hoses to circulate coolant to keep the throttle from freezing in cold weather. Its a very easy fix and a common problem. Could be the gasket or the hoses.

Throttle Body Heater Plate Kit (Genuine Part # MGM000010) | Land Rover And Range Rover Fuel System Parts

 

Ah, that's simple enough.
Thank you zski128! I appreciate the info and the link!
You might guess, I have a lot to learn about anything built after 1979.

 

Well, not really, the Rover v8 is 1963 aluminum engine LandRover licensed from GM and besides being stroked and bored over the years to increase displacement has remained the same. You'll find that this truck is very easy to work on.

 

Good to know, thanks!
I'll dig into it this week. I see the hose that's leaking now. It's one of the two small hoses you were talking about. You're right, easy to get to and should be an easy fix.

 

My Throttle body heater plate itself is pouring coolant so bad it's getting my crankshaft sensor wet and making the Disco run like a Nissan right now, so I have it bypassed for the moment until the part arrives later this week. The weather in Alabama is approaching 80 degrees at the moment, so I think I'll be safe from any throttle body icing till Friday. It was really easy to bypass with just using a brass coupler and the existing hoses and clamps. Anyone that's in danger of freezing or near freezing temps should never try this at home. LOL

 

just an fyi, saw 0 and below a lot of prolonged temps in the teens, this winter and no ill effects from the absence of tbh.

 

Bypass that hunk of garbage!! If you fix it you WILL be doing it again down the road. The TBH is one of the many over designed failure points.

 

I have been considering it... If I didn't already have the part on the way I might just forget it. Don't think I could handle having a brand new part for the rover and not installing it. lol

If it fails again I most likely will just leave it bypassed. I'm a risk taker, and Alabama winters are pretty mild.

 

meh, I still have mine in the box on a shelf. it is not going to fail, there