This is a continuation of my stalling issues on my Merc. If you remember the story skip to the attachments and let me know if the diagnostic results show anything that jumps out at you. If you don’t remember my story, read below. My 2003 Mercury 250XS has been stalling out for the past year and I am at my wits end trying to figure out a solution. Two separate shops have looked at it. First shop found nothing wrong. The second shop put it on the river and got the issue to repeat while hooked up to all their instruments. Attachments below are the paperwork I got from them showing the codes. Thinking it was fixed, we took it out this weekend while on vacation and it worked fine in the morning (about 15 minutes of running on plane on a little 1000 acre lake) but then we started tubing in the afternoon and it died twice (about 30 minutes of pulling the tube). No alarms, no warning, just dies. Like if you turn off the key or pull the kill switch. Hoping it was a load issue we tried boating around at approx. 35mph with just the family in the boat (less than 2 miles). Died again. Got back to the dock and let it sit for 3-4 hrs. Went out again to take the boat to the ramp with just me in the boat and it died 2 more times going about 1 mile across the lake. Boat starts right back up and idles with zero issues. Replaced the battery over the winter with an 1150cca AGM. Humminbird reads 13.8V when running the motor. Shop 2 replaced the trim relay since that was the main fault they found. Shop 2 also said fuel pressure is good so they don’t believe it is degraded fuel lines being clogged by ethanol fuel (which is what I was thinking the issue was). Found no loose wires. Any other ideas? Also, the “frequency counter” on the diagnostic print out is how many times the issue has happened, correct? Because the top two faults have a count of 128 and 121 times they have happened with an engine state of “stall”. It has not happened that many times to me over the past year. Starting to wonder if someone dumped their problem child on me since they couldn’t get it fixed. Engine had 88 hrs when I bought the boat. 117 hrs now. I am the 3rd owner. Love the hull but really starting to dislike Mercury.