Dose anyone know what year corvetts got the new stuf. Last year my a/c would not cool the car down. Dose a 90 vette have bad a/c or do I just need to recharge.

 

94 was the first year for R134A

 

Take it to a good A/C shop. They can leak test it for you before you commit to purchasing refrigerant. BTW, your Vette takes R12 Freon.

 

Thanks, dose anyone know if somebody makes a retro fit kit for a 90 I saw ecklers has one for 84-87

 

It's essentially a matter of swapping compressor oil types and fitting the high and low pressure sides with different sized Schrader valves. But if I were you, I'd have the OEM R12 put back in there. R134a doesn't cool as well and its harder on your compressor and other system parts.

True, CFC 12 is no longer manufactured in the United States and is gradually being phased out. Freon (R12) is still available but its relatively high cost is prohibitive for many people.

I had R134a in my Vette for a month, then had the A/C techs replace it with the O.E.M. R-12 because it gets colder and is easier on the compressor.

You will recall during the early 90's, new issues arose about the alleged damage to the ozone layer from refrigerants like R-12 Freon.

R-134a became the replacement of choice of the manufacturers, then lots of new replacement refrigerants started appearing on the market.

But there were a lot of things consumers found that they did not like. First, R-134a has poor cooling performance compared to R-12. Second, moisture in an R-134a system creates extremely corrosive acids that can eat a system up from the inside out.

Third, incompatibility between the lubricants and refrigerants can cause hidden damage to compressors. Fourth, alternates with R-22 eat some seals and leak through hoses. And fifth, refrigerants with flammable butane, isobutane or propane in them that are not EPA accepted came on the market.

From what I've read, it looks like FreeZone RB-276 is going to replace R134 a and ultimately R12 since it is the only EPA accepted alternate refrigerant in which oil is included as part of the package.

This oil is superior to others because it's is an extremely high quality synthetic lubricant and protects against corrosion. Much better than POE, PAG, or mineral oils. It is also fully compatible with R-12 and R-134a, and their lubricants.

 

Thanks, I'll get it checked out