Afternoon folks,
Need some help please with the fans on my 2WD Saph, basically they do not kick in as they obviously should do when the engine gets up to temperature.
I've pulled the fan switch and bridged across it and i can hear the relay clicking but it does not set the fans off.
The car has been stood for quite a while and a few years ago i changed the cooolant header tank for a 4 WD tank which has the flow & return pipes in a slightly different location on the tank to the original 2WD.
one.
I'm wondering if i've introduced a problem when I've changed the tank.
I deals what the issue is here and are there any other checks i can do?

Many thanks.