Symptoms: no more cold.
Lots of possibilities here, but these are some common ones:
- Low on refrigerant - Could be a leaky hose, but often seen is a leaky condenser, which can sometimes be welded by a radiator repair shop. If it's a leaky hose, try to find a shop to rebuild it using your ends rather than pay the big bucks for Audi replacements. Leaks could also be from the compressor.
- Clogged "orifice tube" - this has a filter screen that can become clogged with metal particles, especially if there has been a compressor problem in the past. It is apparently accessible underneath the battery tray, at the evaporator inlet pipe. The same Orifice Tube was used by GM, so a replacement Orifice tube for a mid 80's Cadillac will work fine. If your system is completely charged and has no leaks, but still won't cool you may want to clean/replace the orifice tube (requires system discharge)
