you can get scannner cable and software off ebay to use with a laptop to scan obd1 for 55bucks
i use an autoxray-6000 thats does them all but at 600+ thats a bit pricey for the average guy ,
might be able to score a used autoxray off ebay cheap
heres one that will work cheaper than the 6000... http://cgi.ebay.com/ebaymotors/Auto...t=Motors_Automotive_Tools&hash=item35e30cd27b
i have an OTC2000 which was the scanner back then but its a large case and ship would be high