peter cain
Member
So this is a weird one. 2011 2500 5.7. Been running great ever since overhaul some 4 years ago. It just started this wierd behavior where it seems like the fuel pump won’t run if system voltage drops below 11.5. Has anyone run into this? Symptoms would be: cold morning no start. Starter motor cranks engine smartly. jump with a jump pack or another vehicle, starts just fine. Once running, it runs fine all day. Re-starts, errands etc. no problem. I just installed a new battery today, so tomorrow we’ll see. Anyone run into this before?