OK I buy a 90 Crx si almost bone stock. A/c works but it doesn't trows any more cold at temperature at 104f and 105. But at night it colds Good. So I know forsure it need to be recharge, I ask the old owner if he converted to R134a and he say no that he used the R12. Well I don't have access to an R12 freon or have a certification to buy it. What do I need to convert to R134a. New seals or something. I have the valve adapter for the R134a that's all. Also can I just drain the old freon( with that little compressor or what ever it is) ( R12) and add the new one R134a.


Also sorry for any misspending my first language is not English.

 

If its blowing 105 during the day, It seems highly unlikely that it is working at all. Do you hear the compressor cycling at all?

 

R134 conversion kit.
Get new o-rings for every connection in the system.
New filter/dryer
New R134 expansion valve

R12 should (legally) be reclaimed rather than venting the gas into the air. most A/C shops have the ability do this.

Pull MANY vacuums after you get everything new installed.
Very important to get all the old oil out of the system.

 

Sorry I was trying to say 105F outside. It doesn't blows any cold only at night. And yes compressor works fine its, was replaced by older owner,its new

 

Thank-you

 

Drain ac, pull vacuum, charge with ester oil, top off freon, add uv dye.

 

Don't waste money. You have a leak somewhere and no way to test for it. If you're going o convert, you need a new suction hose, a new discharge hose, a new drier, and all new o-rings. You then have to remove and flush all components with a solvent. Then you have to re-install everything and vac it out for an hour and then close off the system to test for leaks. If you are lucky enough not to have one, then you have to charge with PAG100 and R134, just to get an AC that underperforms because the condensers and evaporator are too small. I replaced EVERYTHING and went back to R12. It cost a fortune but it was worth it.

 

Hey guys I found an old thread, I just bump, it help me so it can help someone else that is about to convert to R12- R134a. Check it out ---> https://honda-tech.com/forums/honda-crx-ef-civic-1988-1991-3/proper-r12-r134a-conversion-sanden-2334672/