And how much oil do these compressors take? Mine developed a leak and puked out all its oil.

 

Only takes a few oz. Just because some leaked out of the compressor doesn't mean there isn't any left in the system, the condenser, evaporator, compressor and drier all holds some oil. Most oil specs are for a complete system overhaul. 4-5 oz tops in the compressor and you'll be golden, can't remember if it's low side or high side you pour it in... I'm thinking it's the high side. As for Mitchell and alldata; it was nice having access to all of that stuff for the two years I was at college. I just can't see paying full license prices when It won't be "paying for itself" I.e I'm not employed by myself. Very valuable resource tho... Print out as much as you possibly can! Assemble your own shop manual, chilton or Haynes will never be able to compare

 

Theres a website where you can download the entire Mitchell program up to 2008. It took me a few weeks since it is 65G but it was worth it.

 

My system was converted to 134a. Is there any way to tell what kind of oil was used? I guess it probably was either Ester or PAG oil but how do I identify between the two types of oils? I'm going to convert it back to the old type of refrigerant since I have a huge source of it.

I heard that our systems take around 9 oz of oil but just wanted to confirm. Since I don't know what kind of oil was used, it would be better to get rid of all the new oil and start over. Could I get it all out by blowing all the lines out?

 

Nope, you'd have to flush the condenser, evaporator and replace the receiver/drier. They probably used PAG in the retrofit. Huge supply of R-12 eh? Lol that sounds sketchy... Becareful who you say that around especially if you don't have your certifications. I think you aren't supposed to have more than 5 pounds in your possession.... It's been awhile since I had my A/C training and my MACS certification is long expired

 

My Chevy Suburban that I'm filling up takes more than 5 pounds of R-12 to fill it up so that must make this vehicle illegal to have in my possession. No wonder the government wanted to destroy this evil vehicle so badly through Cash for Clunkers.

 

im saying since the production and retrofit of R-134A and with out a license. just rough facts coming off the top of my head, as stated before man; its been about 2 years since i've even had to think about A/C work. Very possible i'm off.

 

I think it is 5lbs. I dont remember the amount either and it was just last year for me. I know it varies by state as well. Here in wisconsin you can not have anything. R134 or R12 with out a license. R12 is straight up illegal to buy even with it. Thats why its important to have friends out of state.

 

Whats this black box on the left, in front of my low pressure switch. Could this be my a/c problem