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

[djdawson2 at aol.com]

 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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