I am a series owner new to the "modern" Discovery engines. I just bought my first Disco and it came with a troublesome overheating problem. The engine will climb in temp rapidly after it is started. I have pressure in the front hoses but no pressure in the back hoses by the heater. The previous owner had tried to fix the problem and installed a new thermostat and bypassed the heater core to try to fix it.

any help on where I should look for a clog or other possible problems would be greatly appreciated.

Cheers,
Brian

 

replace stat and evaluations radiator needed also fan belt route

 

sorry but I don't really get what you are suggesting. replace "stat" =thermostat? What is evaluations radiator? and the belt is fine as far as I can tell.

 

what he getting at is it could be a bad t-stat, and the belt can be routed the wrong why and still fit.
I would hook the heater back up as that is not the cause of your problem and makes it harder to purge all the air out of the system.
are you bleeding the system according to how the rave tells you too?

 

drowssap, thanks. That makes more sense to me. I am going to re route the lines back through the heater and try a new thermostat as there is air in the system. I have not bled the system yet as I just got the disco to my place on Monday. Pardon my ignorance but what is the rave?

 

The Rave is the land rover Disco Bible (fatory shop manual).
you can down load it at this site, it will save you the $100 odd $ they charge for a printed manual land rover service factory manual RAVE download land rover resource, service manual, workshop factory manual, download, rave, vehicles including discovery, series, defender, range rover, freelander, LR3, Handbooks, Catalog, Catalogue, Land Rover Inte

 

Thanks again very helpful.

 

thou I luckly have not had any problem bleed a Disco system, quite a few people have. It can be tricky and if not done correctly it can haunt you forever.

 

does it leave air pockets if not drained properly?

 

possibly, but they should be be adressed in the bleeding process.
I'm sure i be corrected but my understanding on a DII the t-stat send water throw the heater before the radiator, so if the heater is not hooked up, it could be a issue.
when bleeding or filing the system the truck should be cold, level or on a slight incline. remove the screw from the T hose fill the recovery bottle until water comes out of the T, then put the screw back in.
start the truck and un-snap the recovery tank and raise it 6-8 inched the hoses will let you know when to stop,(the recovery bottle has to be the highest point in the system for the air to escape) continue to fill the recovery bottle.
I rocked mine back and forth slightly,( because it is baffled inside) reinstall the tank and you should be fine. check it the next couple of morning and top f if needed.
Thats how "I" do it, I sure there are other ways