[Healeys] electric fan

[Oudesluys]

This depends on the position of the temperature switch and its switching 
temperatures.
If you have the temp. switch in the top hose of the radiator you will 
have the described effect when the switch temperature is lowish, say 
around 85/80degrees C. When you switch of the engine the coolant temp. 
around the cilinder head (and top hose) will rise, hence the cutting in 
of the fan. However it will not do any harm, just drain the battery a 
bit. To overcome this fit a temp. switch that switches at around 
104/98degrees C.
If the temp. switch is fitted in the bottom hose of the radiator the 
running on would be a bit odd, allthough a temp. switch with low 
switching temperatures would be fitted here, as the coolant temp would 
have dropped considerably here.
Appearantly the relay of the fan is not connected up through the 
ignition circuit but directly to the battery. If you would wire in the 
relay into the ignition circuit the fan will not come on after switching 
of the ignition.
The fan should not cut in under normal driving conditions. It should 
only run in heavy traffic and extreme conditions.

Kees Oudesluijs
NL

Jess Power schreef:
> Placed a Hayden electric fan in the BN1.It has a preset temp switch 
> which measures the temp of the water hose going to the radiator.It 
> comes on ok but stays on for at least ten minutes after stopping the 
> car.Is this normal?