how AC clutch cycles? AC thermostat checking?

[Konstantin Bogach]

The only misbehaviour, as I suspected, was "no cycling" after 10 min of
running.  When compressor is on low pressure is 30-32 psi, high pressure is
around 200psi.  The only numbers for low pressure I saw was great Peter's
Golledge post about conversion procedure.  It states 30-35 psi is a norm.  I
got there right after third can of R-134A.

Konstantin.

Eric wrote:

> As far as how much charge weight of refrigerant is more important than
> pressure.  Recommendations I have heard put the charge of R134a at
> around 80% of an R12 charge by weight.
>
> I have never put my manifold on my Audi (still works great with R12) as
> I don't want to mess with a good thing.  I have seen the numbers for my
> Suburban when I converted it.  Its low side pressure cycles between
> about 55-60 psi when off down to 25 psi when the compressor cycles off.
>
> Have you had guages on it when it misbehaves to see if something is
> changing before it happens?
>
> -Eric
>
> Konstantin Bogach wrote:
>
> >Hi.
> >I just finished AC conversion.  The leak I reported 2 days ago was
> >probably due to not tight connection at manifold and not tight low side
> >shreder valve.  I took 3 cans of R-134A with low side pressure at 30psi
> >and refused to take more when I tried to  raise it to 35psi.
> >
> >Now the problem (may be not):  after 10 min working at 90F outside
> >clutch does not cycle.  Does it look normal?
> >
> >I removed thermostat, hooked up DMM  and it shows 1.3 Ohm.  Shouldn't it
> >be short (0 Ohm)?
> >
> >Thanks.
> >Konstantin.
> >200tqa '89  (now with cool air!!!)
> >200tq '89  (will have cool air soon)
> >S4 '93  (did not nose anywhere yet, and air is cool.  Wierd!)
> >
> >
> >
> >