[V6-12v] A/C compressor comes on

The CyberPoet thecyberpoet at cyberpoet.net
Sat Jul 31 00:58:37 EDT 2004

I've heard of the A/C compressor switching off due to too low an 
exterior temp (within a few degrees of freezing), but never of one 
coming as a problem with the compressor itself. The circuits in the 
dash and the interior of the cabin are very finicky when it comes to 
voltage stability, and audi uses multiple voltage stabilizers in the 
circuit designs... for example, when the battery voltage starts to drop 
too low due to a borderline failing battery, the car might still start, 
but the sunroof will either ignore commands or start operating in 
unexpected manners. I suspect that either your battery/charging system 
voltages are off (such as your battery is dying), OR one of the voltage 
stabilizers in the dash that affects the A/C button reading function 
has seen better days.

=-= Marc Glasgow

On Friday, July 30, 2004, at 08:44  PM, Lino M. Valadas wrote:

> Hello all,
> My 1993 90q sport has developed a new problem.  The A/C compressor 
> comes on
> and stays on at will. The A/C button is off of course.  Has anybody
> experienced this?
> Any help would be appreciated.
> Thanks
> Lino
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