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 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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