I bought a 84 300D and the AC is not working.

Just curious what the common causes of this are (seems like most of the older ones on ebay and the like are non-working)

Assuming I get it working but it needs a charge...what's involved with converting to 134A or faux-R12 products

Gracias

 

You can use R-12 substitute without restrictions. They get pretty cheap lately.
To convert to R134, the replacement of accumulator and flushing is recommended.
I had one, with minimal leak, that dumped 1 lb of freon in 2 months.
All the test couldn't find the leak, so I kept adding freon twice a season.

 

i am having the same a/c problem. just started blowing hot air only all of a sudden. i am assuming that is because of low freon but not sure. i also cant find the ac in the car eiher? how hard is it to convert to 134a