Thanks everyone, this is a great forum! I'll try the CID route first since it's fairly inexpensive. The Ford dealer quoted me several thousand dollars to replace the computer (if they could even find one) and suggested that I dump my car. If it turns out to be the computer and not the CID, can I...
Every once and a while my 89 SHO will cut out. It feels like the ignition switch has been turned off and on very quickly. The other day it started bucking on the freeway, it sounded like a compression brake on a semi-truck, and it was gutless. It lasted about 15 seconds. Now it runs great again...