2.3L ('83-'97) 1994 2.3 random sputtering and backfire

[Harp 1]

I have a 94 2.3 and having an issue with random sputtering and backfiring. It may go for 6 months and not do it and then it may do it 4 or 5 times in a row. When it does this it is extremely hard to get restarted, acts like it is not getting spark, even tried starting fluid a couple of times and still no start. Have replaced the ICM seeing how they are a known issue with the 2.3 due to mounting location but needless to say I now have a $216.00 paper weight. Also, there are times when I go to start it all it does is crank over, again like it has no spark, and starting fluid does not work either lending to the possible no spark thinking. I am at a loss, as well as a couple mechanics as to what may be the issue.

 

[scotts90ranger]

Crank sensor on those is more prone to issues, I had one go out once... didn't do anything for like 2 hours then drove home just fine... crank sensor is the input to the DIS module which then gives the rpm signal to the computer. But then again it could be a power or ground to the DIS module...