So got to take out tye Aux fan, advice from williamx
Will test it using a signal generator

Have placed and order with BMW or some parts, should be here on Thursday
It is inlet manifold gasket set

Will re-install the inlet manifold and see how it goes

__________________
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