So my blazer hasn't ran for a month. I replaced the cap and rotor and it ran for a day or two, then it would crank and not start again, so I replaced the ignition coil. Fires right up, ran like a dream for a week in a half - two weeks, then it started but would idle rough, then die, or it would start then die. Then it wouldn't start at all, so I replaced the ignition control module thinking that was the problem, well I was wrong, still no spark, the engine is getting plenty of gas, no spark from plugs no spark from coil, I'm lost, can someone help me out here, thanks in advance

 

Check out the Crank sensor and or signal

 

Replaced that also, still no start