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

["Nathan Sobieralski" <valleyrat12@xxxxxxxxx>]

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