Re: AC High pressure switch

[Michael Hogan <mikhogan@stic.net>]

My 87 Coupe GT had the same problem.  After disconnecting the radiator
fan, I had a current leak that would drain the battery overnight. 
Through the help of the Bentley manual's electrical schematics, I
discovered that the problem lied in the cooling fan after-run unit.  It
is on the relay panel under the driver's side dash.  It is a relay with
a built in electronic timer.

Hope this helps
Michael Hogan


> Date: Sat, 24 Jan 1998 05:46:51 -0600
> From: "Anthony Nadalin" <nadalin@prodigy.net>
> Subject: AC High pressure switch
> 
> I have a 1987 4000cs Quattro, and the radiator fan runs all the time
> (just started) so I have to unplug it to keep a battery, any clues as to
> where to look ?
> 
> I was told it was the A/C high pressure switch!
> 
> Where is the A/C high pressure switch located?
> 
> - -Tony