So, herewith an update
Got a new viscous fan. Does work as the temp going up the hill stays at about 88dC

Had an error of cylinder three being switched off.
Swapped spark plugs, and coil
Seems to have cleared that error.

So,.... Does anyone know what the LU-Meter readings are in INPA?

Cylinder five goes to aboit -2310
Seems due cylinder one reading very low.
So might be compensating on cylinder five.

All others are below 1000 and move up and down a little.

Did check spark plug for cylinder five, seems to be running very lean compared to cylinder two and three.

Disconnected all onock sensors, the do pop up as errors on INPA.
Doesnt seem to make a difderence to LU meter readings

Also found what seems to be a crack in the valve cover on the cylinder five bank.
If I blow into the oil scavenger pipe, there is a breeze coming out at an odd place.
Suspect it is a small crack.

The engine has a rough idle, suspect due to cylinder five.

So the fun carries on.

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2002 BMW 325i Touring
2003 BMW V8 4.4
2002 Land Rover Discovery 2
2002 Land Rover Freelander 1
1980 Lotus Esprit. Sold. Less work for me
1961 Jaguar MK2 Sold. One less project
1962 Land Rover Series 2