[s-cars] A/C Cycling on/off...

[Wylie Bean]

I always thought AC cycling on/off was due mostly to low refrigerant, with the obvious off-cycle under (near?)WOT. 
Wylie Bean
TheRingmeister at triad.rr.com
90 cq
91 90q20v
92 UrS4
08 Q7 3.6
Sent on the Sprint® Now Network from my BlackBerry®

-----Original Message-----
From: "JAM" <jscarstuff at charter.net>
Sender: s-car-list-bounces at audifans.com
Date: Wed, 30 Jun 2010 08:00:41 
To: S-car list<s-car-list at audifans.com>
Subject: Re: [s-cars] A/C Cycling on/off...

Interesting....  I've had the same problem with both of my S6s.  I'm pretty
sure the aux. fans are working on mine but I'll have to double check.
Jason

----- Original Message ----- 
From: <djdawson2 at aol.com>
To: <andrew.sb at gmail.com>; <s-car-list at audifans.com>
Sent: Tuesday, June 29, 2010 4:28 PM
Subject: Re: [s-cars] A/C Cycling on/off...


>
> Keeping the CC cluster out of the equation for now.... I would suggest 
> that if your A/C is cutting out while in traffic or going slow, that your 
> aux fan is probably failing to operate.  This means inadequate airflow, 
> resulting in high system pressure, and eventually cut-out due to high 
> pressure.
>
> I would check operation of you aux fan (with A/C on) as a starting point.
>
> Dave
>
>
>
>
>
>
>
>
> -----Original Message-----
> From: Andrew B <andrew.sb at gmail.com>
> To: s-car-list at audifans.com
> Sent: Tue, Jun 29, 2010 1:41 pm
> Subject: [s-cars] A/C Cycling on/off...
>
>
> The other day I was driving my 95.5 S6A from Boston to CT, and shortly
>
> into the drive I encountered some heavy traffic.  As I shuffled along,
>
> the A/C kept cutting out.  This has happened before, again in heavy
>
> traffic, and on a hot day.  Later, after the traffic finally
>
> dissipated, the A/C nor Recirc buttons/icons would stay lit, no matter
>
> whether I stopped and shut the car off or not.
>
>
>
> When I got to my destination, I left the car until the next day, when
>
> I started it up and the A/C worked fine.  A quick drive that evening
>
> with the AC on was fine.  Finally, on the trip back to boston (with no
>
> traffic and slightly ~5* cooler temps) the AC worked the whole way
>
> home with no incident.
>
>
>
> Also, late in both drives, my CC cluster became hard to operate.
>
> Buttons near the top would not function, but lower ones worked OK.
>
> This doesn't seem completely related to the traffic problem, as I
>
> could press the snowflake button, but it turned right off.
>
>
>
> Any ideas?  There didn't appear to be any overheating issues as the
>
> idiot light did not come on and the temperature never climbed off the
>
> fat line, although is did creep to the hot side of it.  Could my CC
>
> head be overheating?  Compressor clutch?  There doesn't seem to be any
>
> additional noise although the car does drive somewhat more sluggish
>
> with the AC on.
>
>
>
> Would love to find a solution for this...the one place I want AC the
>
> most is where it habitually cuts out...
>
>
>
> -Andrew
>
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