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
blower fan off but stops cycling with the blower fan on? (The cabin
air fan)


--- In dmcnews@xxxxxxxxxxxxxxx, "Tom Niemczewski" <tomciodmc@...>
> 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
> 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
> 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
> 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@...
> ----- 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
> > I have cold air! But.....


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