[Supras] Off topic question

[Chad Fernandez]

Jeff wrote:
> ....I'm told by the owners' repair shop that if you charge it it will run but eventually (don't know how long) it will lose it's charge.

That is true of most/all automotive AC systems.  The refrigerant 
eventually leaks past the seals.  Home AC systems don't leak, because 
the don't use seals on the compressor.

>They say they suspect a leak at the evaporator under the dash.

Why?

>Question is - how hard is it to change an evaporator and what special tools would I need.

Find a Jeep forum, and ask.  It might mean tearing the whole dash apart, 
or it may not.

> And if I choose to live with a slow leak down what equipment do I need to properly charge it?

I don't believe charging it would be a big deal, However, you'll 
probably need to pull a vacuum on the system first to get all the air 
out..... at least that's the way an HVAC person would do it.  I know 
automotive shops and dedicated AC charging/re-charging machines.... I 
can only guess that they are a fancy vacuum pump, rather than a stand alone.

Chad Fernandez
Michigan, USA