A4 AC clutch

[Dave Fain]

If there is 12V to the clutch and it isn't working, it pretty much has to
be the clutch.  I suspected the freon was low on my 1.8L VW and I was able
to bypass the safety switch and hot wire the clutch to confirm it would
engage.
Dave

You want to make sure that the system is pressurized or the pump doesn't
engage ?
Some pumps have a built in safety switch that prevent dry running/too low
pressure even tho the wiring gives juice to the pump.

Marco Weibel

Sent from my iPhone

On 2012-06-12, at 12:46 AM, "Ed Kellock" <ed.kellock at gmail.com> wrote:

> I worked on my boss' 2000 A4 Avant (250k+ miles) AC tonight and believe I
> isolated the problem to the ac clutch, but apparently it is not available
> separately.
>
> When it should have been running and wasn't, there was 12 volts to the
> trigger wire.
>
> With the engine off, I was able to rotate the ac compressor and it felt
> smooth.
>
> I thought I could just replace the ac clutch, but that does not seem to be
> the case.
>
> If either my diagnosis is poor or anyone knows where I can get just the
> clutch, please chime in.
>
> The ac clutch part# according to ETKA is 8d0260811a
>
> Thanks!
>
> Ed
>
>
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