Hi,
no, the fan control is performed by the dash instrument cluster and this, in turn, gets the temperature information from the sensors in the front, one in the cooler and the other one nearby the intake manifold, where the water hose is mounted.
But after 25 years, not only the cooler but also the sensors are usually worn out. Most V8s have more than one of those sensors broken at some time. The RHD we bought in the UK 2004 had several temperature issues, as far as I remember...
Regards
Bastian