My 2000 discoII is overheating and i'm getting the dash water noises and limited hot air.

Coolant level is good, and I've tried bleeding the system on an incline from cold, but no air comes out.

Would air in the system cause the overheating or would that be something else? Fan seems to be going but cant tell if it is at high speed or just freewheeling.

How can i find out what is causing the overheating?

 

If you have water noise behind the dash you have a air pocket somewhere. When you bled did you unclip the expansion tank and raise it up on the battery box? Also you probably need to back flush your heater core

 

Air in your cooling system is definitely your problem (or at least a symptom of the problem). You need to get the air out of the system. There should be a bleeding screw on the coolant hose right in front of the engine. When you get the air out, you will need to ask yourself how the air got in.

 

It could be a bad water pump.

 

Would air in the heater system cause overheating?

 

yes as would a blocked up heater core

 

The heater system and the coolant system are tied together. If you have air in your heater core, you have air in your coolant. The air will inhibit the coolant from removing the heat from your engine. Hence the over heating. The air will also not pass heat through the heater core. Hence, no heat. You have to get rid of the air in your coolant or your engine will overheat and die. It is that simple.

 

Solved the water noises and air in the system by leaving it overnight on an incline.

Alas it still overheats. Water pump or something else. How to test the water pump?

 

That is not going to cut it...follow this to the "T": https://landroverforums.com/forum/sh...ad.php?t=23072

 

Yes did that. Worked fine with the incline of the vehicle helping. But something else is causing the overheating.