Noticed air in the fuel line at the test port the last time it stalled. Attached a pressure gauge and it started right up without cooling down and continued to run fine as long as the gauge was connected. Returned to the same problem after removing the gauge. Totally stumped, no problems at all as long as the gauge is connected... I left it connected for 3 days, the problem came back when I took it off. No trouble codes at all ??? Typical pressure readings. I went the whole 9 yards as far as checking all the sensors and wiring before I posted this and thought I'd ask before I replace the pump. (new OEM pump 2 years ago)

 

check the scharder valve - even tho its on the pressure side it maybe leaking and sucking air - been there seen that .....

 

Pulled the pump and it turns out the Venturi tube was plugged so it wasn't keeping the bucket full when it was below a 1/4 tank causing it to draw air into the fuel line. Like a vapor lock. New one on me, bonus for figuring it out myself without any help from the forum 😲

 

Glad you got it figured out - thanks for the check back and good luck .....