Thanks for all the replies folks.
The ecu senser loom looks like its seen better days and will need replacing, not sure what road to take here. A friend mentioned a new ecu set-up with a probe fitted in the exhaust manifold to bring this motor up to date ( for want of a better word ) but would this new set-up come with all the necessary wires and cossie plugs???????
Need to get the thinking cap on.

Jimmy