Re: [DML] Fixed my AC! +observations/questions
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Re: [DML] Fixed my AC! +observations/questions



That all makes sense but why does the compressor cycle at idle with
the
blower fan off but stops cycling with the blower fan on? (The cabin
air fan)

Nathan

--- In dmcnews@xxxxxxxxxxxxxxx, "Tom Niemczewski" <tomciodmc@...>
wrote:
>
> Hi Nathan
>
> I sure hope it's not the one I've seen some time ago that says
that you can
> vacuum the system using engine vacuum. If that is what you did
you'll be ok
> for a while but later on you can expect some serious corrosion
inside the
> A/C system. Engine vacuum is way not enough to get rid of all the
water in
> the system and refrigerant with water becomes very corrosive. For
that
> reason it is said to vacuum the system using a vacuum pump for
about 45
> minutes.
>
> As to your compressor not cycling... the pressures in the system
depend a
> lot on the ambient temperature. Since you said that it was 95
degrees the
> compressor will have a very hard time keeping the pressure low
enough in
> that case especially if you have a regular fixed orifice tube. The
variable
> orifice (VOV) helps to keep the pressures within the proper range
and makes
> the compresson cycle even at idle. If it's blowing cold air even
at idle you
> should be fine.
> As to the amount of refrigerant... 28oz is a bit low. The best
results are
> achieved with between 32 and 35oz of R-134a. If you add some you
might
> actually see the compresson start to cycle but even if it switches
off it
> will be for just a short moment at that temperature. It will stay
running a
> lot longer.
>
> Good luck
>
> Tom Niemczewski
> vin 6149 (in Poland!)
> Google earth:  52°25'17"N 21°1'59"E
> tomciodmc@...
> www.deloreana.com
>
>
>
> ----- Original Message -----
> > Nathan Sobieralski <valleyrat12@...> wrote:
> >  A big thanks goes out to who ever posted the cheap do it
yourself AC
> > fix in the tech section. I followed his advice very closely and
now
> > I have cold air! But.....
>







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