Hi all,
Have had a look through some of the threads to do with this problem but cant find the answer...

I have a 1993 518 / e34 / M40 engine 67k miles...

Its been off the road for a while as I've been doing alot of work to get it MOT ready (I told myself 3 weeks ot begin with, its been 13 months...)

It passed its MOT, but it is overheating. Have tried bleeding the air from the system, but today realised that the water is not getting hot (or even warm) in the radiator, or in the hose going from the bottom of the rad into the water pump (front of the engine block).

The water is heating the radiator matrix, so I assume the pump is working properly...

The Temp sensor seems to be working properly, and the thermostat was replaced when I changed the cylinder head...

HELP! Any ideas would really be appreciated.