[Yurick]

I have a 1990 325iC (E30), whose air conditioner over the last few years had progressively blown warmer air. At the moment there is no cool air at all coming out. The compressor turns on like usual, but no cold air. I presume that there may be a small leak in the system somewhere and at this point the freon is all gone.

I am considering upgrading to the R134a system. Looking at the conversion kits our host has to offer (I find them confusing), because if I purchase a kit of sorts, then I would expect it to include all the items necessary for the upgrade. It seems that purchasing a kit, another kit has to be purchased as well to cover the necessary parts.

Has anyone had to upgrade their A/C system from R12 to R134a? Could you please shine some light on which components really need to be replaced/installed? Any recommended brand names? Expected price?

Thank you.