AC York Compressor Clutch Acting Up!!!

[Huw Powell]

But with a modern AC machine that's trivial to do - an hour, mostly 
unattended.  And dye goes in with the correct recharge, so the leaking 
component can be identified for replacement estimates.

On 3/19/2012 9:42 PM, Mark Rosenkrantz wrote:
> There are 2 ways to do it correctly.  One is with guages hooked to both
> the low pressure and high pressure ports.  This is standard on most
> cars.  VAG only has one port (officially, but some cars can have a port
> attached at the compressor for high pressure) and the only way to charge
> a stock car is to completely evacuate the system and then fill with a
> measured amount.  Both under charging and overcharging is poor for
> performance as well as the compressor itself.
> I think this is STUPID as there's no way to "top off" a system after
> years of service (IMHO, all systems leak a little over time).  For
> example, my Escalade needed topped off after about 6 years.  Just a
> little, but it was needed.  Nothing "wrong" with the truck.  VAG's
> procedure would have been a full evacuation and recharge from a scale.
> Mark Rosenkrantz
>
> On Mon, Mar 19, 2012 at 8:30 PM, Bill Green <wgreen56 at tampabay.rr.com
> <mailto:wgreen56 at tampabay.rr.com>> wrote:
>
>     Maybe so I'm no professional that's for sure. My only experience is
>     with my
>     own cars. I have a set of gauges I use because there's no way for me to
>     monitor how many ounces are actually in a system, whereas I can always
>     monitor pressure to let me know if the system is fully charged.
>
>
>
>     -----Original Message-----
>     From: Huw Powell [mailto:audi at humanspeakers.com
>     <mailto:audi at humanspeakers.com>]
>     Sent: Monday, March 19, 2012 9:56 AM
>     To: Bill Green
>     Cc: quattro at audifans.com <mailto:quattro at audifans.com>
>     Subject: Re: AC York Compressor Clutch Acting Up!!!
>
>     I thought AC charges were supposed to be measured to spec, like, say, 20
>     ounces of refrigerant?
>
>     On 3/19/2012 6:35 AM, Bill Green wrote:
>      > "I guess I wasn't clear... I meant under what conditions is it
>      > *supposed* to turn itself off (like high engine temps?)."
>      >
>      >
>      >
>      > It is designed to turn itself off when under-pressurized or
>      > over-pressurized. Maybe you do not yet have enough R134a in system?
>      > Possibly the pressure only rises enough when above 1500 rpm? Just
>     a guess
>     really.
>      > Maybe you should buy or borrow a set of gauges to monitor the
>     pressure
>      > as you charge it.