I have a chilton manual, and use speaker wire to talk to computer. Kinda caveman, i know. Would definately buy this code reader, have not seen onw tho. Only codes it gives me tho are 564, fan control circuit failure. Just today it gave me 157,158. Which are mass air flow above and below voltage. Gonna backprobe that now... the ticking however sounds like from the distributor. That my best guess. I appreciate the advice toyman. Where can i acquire this code reader you speak of.