Orginal R12 system - how to test the compressor... dreaded topic
 

Have an all original 84 targa Coral Red.

AC blowers will not come on. Could be electrical. Refrigerant Leak, or compressor. Want to keep this an R12 system.

Read the 101 Projects book on the topic but need some pointers on what to check first... etc.

Have an R12 supplier so that is not a problem unless the compressor is shot???

thanks

You said blowers will not come on.

Do you mean that air comes out but the compressor does not kick on ?(temp drop in rpms and auditory in the engine compartment)

Or

That it doesn't blow at all.

Air doesn't come out at all. Thinking it may be an electrical malfunction.

Begin with the simple things. Are your fuses blown?

Don't know about your car but my blower always runs at low speed whenever the key is on.