Re: Rad fan dosen't run after engine off !

[steveb@newkla.kla.com (Steven Buchholz)]

> OK, which is it?  My '82 Coupe's radiator fan is shut off when the ignition
> is shut off.  Why drain the battery just to cool the radiator?  This would
> make sense on a turbo if water is still circulated to the turbo.  Don't
> some turbo models have a special water pump for this?  In any case the engine
> will just sit and cook because the water pump is not circulating coolant.
> 
... yup, that's it.  The newer cars have an auxiliary water pump that runs 
with the fan to keep the turbo's water jacket cool.  I know that it is used 
in '86- turbos, and that it was not used in '83.  There isn't much use for 
it on non-turbocharged cars of any vintage.  From what I have heard, al-
though other manufacturers use water-cooled turbo jackets Audi may be the 
only manufacturer that has such a cooling system on their stock turbos.

Vorsprung durch technik!
Steve Buchholz
s_buchho@kla.com