I have another idea. I had the same problem with my 91 YJ after having the 'parking brake pedal assy' recall done on it. There is a ground wire that comes from the fuel pump and mounts up under the dash. When they took the old bolts out, they laid the ground wire aside and never reconnected it. When I went to pick her up from the shop, she would crank and no fire. I replaced the CPS and coil with no luck. Was about to replace the computer module thingie when I found this forum and asked around and found that it was low fuel pressure causing the computer to not allow the spark and hence no fire. This was what brought me to this forum and I love offering that suggestion due to it worked for me when noone else had an answer. The wire on mine is DARK green with a yellow stripe or something like that.
Could be a shot in the dark, but ya never know. We all learn from eachother here. Let us know what you find!
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