Posted 7/22/2021 02:07 (#9122723 - in reply to #9122500) Subject: RE: 7.3 diesel Ford Powerstroke
I know this will sound strange, but try a set of new batteries. There was a truck at work years ago that had the same symptoms. Most of the above was done to no avail. It started fine, but the batteries were causing to much load on the alternator pulling voltage down and causing computer issues.