Re: was hydraulic fan now electric 4.7 fan

From: Jim Miller (jim76712@swbell.net)
Date: Sun Oct 29 2000 - 20:07:02 EST


This explains why I noticed no drop in rpm when the hydraulic fan started up!

Marty Galyean wrote: That may seem true, Mike, but it isn't.

> The PS pump is constantly creating pressure that is not used and is bled back into the
> low pressure side.
> Your PS pump will work no harder with a fan making use of the normally 'wasted'
> pressure. Trust me. The engineers have done a really good thing here.
>
> Marty
> '00 4.7L cc Dak
>
>
> > Jim Miller wrote:
> >
> > > Anybody see the fan used on late model Camrays and Lexus models? It is neither
> > > electric or driven by the engine belts rather it uses the flow of otherwise
> > > wasted power steering fluid already circulating in the power steering system.
> > > Now we all have a power steering pump that runs all the time and I don't think
> > > any of us would want no power steering on our daks so what does it cost to let
> > > it run the fan to cool the radiator. It is silent also. Find one and check it
> > > out! I think it is on all late model V6 and maybe V8s also. They have been
> > > using this fan for several years. It uses very little underhood space also.



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