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

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 

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

----- Original Message -----
> Nathan Sobieralski <valleyrat12@xxxxxxxxx> 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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