[urq] : A/C - fan always on?

[djdawson2 at aol.com]

Brandon,
The 91 20v runs the fan full time.  Since you have that same wiring harness, I would expect it to behave the same way as a '91 20v.  FWIW, the fan running isn't just for cooling the engine, but to keep the high side pressures within an acceptable level.
 
It is also interesting that we are hearing of reports of different '85 urqs acting differently.  I know my old 85 ran all the time.
 
The wire that goes to the A/C clutch gets 12 volts when the clutch gets engaged.  This could be a very simple place to take a voltage signal to an auxilary relay to kick your fan on every time the A/C clutch is engaged.
 
Dave
 
-----Original Message-----
From: Brandon Rogers <brogers at terrix.com>
To: 'Ed Kellock' <ekellock at gmail.com>; urq at audifans.com
Sent: Fri, 9 Jun 2006 10:11:21 -0600
Subject: Re: [urq] : A/C - fan always on?


So maybe my system _is_ working properly  - but I still like the idea of
the fan running constantly, personally.  I'm really thinking I want to
add a manual fan switch but my Wire-Meister doesn't like that idea....

Brandon

-----Original Message-----
From: urq-bounces at audifans.com [mailto:urq-bounces at audifans.com] On
Behalf Of Ed Kellock
Sent: Friday, June 09, 2006 9:23 AM
To: urq at audifans.com
Subject: Re: [urq] : A/C - fan always on?


My '85 urq does not run the rad fan automatically when the a/c is
switched on, but given the condition of it when I acquired it, I
wouldn't be surprised to find a melted relay as mentioned by someone.

Ed


On 6/9/06, Andrew Finney <afinn1 at gmail.com> wrote:
>
> I just sold an '85 4000Q with perfectly working AC and it cycled the 
> fan on and off too. If you look at the wiring diagrams for the early 
> AC (found in the Haynes manual) and compare it with the diagrams for 
> the later style AC system in the Bentley you'll see why it cycles on 
> and off. Doesn't mean having the fan on high all the time isn't good 
> for the overall cooling of the motor, which is taxed with the AC on, 
> but I'm almost positive that's not
> how it works on the later cars. I'm sure that's how it works for the
older
> cars.
>
> Andrew Finney
> 1983 and 1985 UrQs
>
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