Shuts off and will not restart, code 42

15 min still running

Ok coming up on 30 min running um the only thing I did differsnt was lightly tapped about 15 times all over the ECm

Ran truck 45 min drive truck ten min came home shit off off for five min cranked it right back up, not sure it its a bad ECm or bad ECM connection but for
Now it’s not really a hard break n my mind so I’m going to let
It
Run and see what happenes. Thoughts?

I understand then oik pressur sending unit is tied into the fuel circuit as a secondary shut off point if oil pressure isn’t lost um but not does that mean the sending unit has to b 100% inoperable? Mine is operational just gives false reading IF u shower down in the gas pedal

Yea nevermind it sat for an hour and now it won’t start so back to square one.

I don’t know what
To do next

I bet its a 500.00 fix

I’m gonna change out the distributor

Well for the drawing that I saw the purple and white wire coming out of the big plug on the ignition control module is the ground that goes back to the computer and grounds the drivers they give power to the igniters skews me the injectors so when I get home I’m going to stick a needle in that wire and put my test line on it and crank it over and if there’s no fuel no ground and no fashion then I know that that wire is not grounding out in the computer I figured for another 50 bucks I could get a whole new distributor

OK let me clarify my last statement when I get home here in a little while I’m going to unplug the four wire plug on the back of the distributor skews me the four wire plug that I was on the ignition control module the purple and white wire I’m gonna ground that wire out with the key on the injectors should fire if they do not fire then I got an ECM an issue if they do fire then I got a control module ignition control module issue SO MORE TO FOLLOW

I was finally able to find the right schematic online is the reason I’m taking this course of action

Correct, I’m at the point where I have fire always now it’s hetting the fuel and the common part is the ICM BUT the ECM also plays a part so I gotta delet one and this isn’t the only test I can see that would do away with a part of an intermittent problem, Ian my thinking process correct

Works bad ICM as u said to become with y mine tested and still tested good not sure