Hey guys and gals if you don't have a code reader, this is the one to ask Santa for... Inexpensive, EASY to use, and works great(I have one)... Of course it only reads OBD1, but I don't think any one has converted to a EEC-V system...
http://www.jcsonlinetoolshed.com/product.php/17216/0
Wow, good call. Does it come with the book that tells you what the codes mean?