As some people know, we just bought an 88 300TE.
Nice condition but not perfect and some issues to resolve...
We paid $3000, and have spent about $200 so far in fixing them... A/C now working and stalling issue was the OVP relay.
Here is the link... maybe a help for you..
http://www.peachparts.com/shopforum/showthread.php?t=150310