I have a new block in my 94 3.8, and the "check engine" light is on at all times. I put it on the computer and no codes were shown. I've tried the fuse #15 trick and that didn't do a thing, it didn't start with out it, but once i put the fuse back the light came right back "on". What the heck should i do. It's really enoying at night. Thanks in advance.