[Philly]

Are you sure the starter is good?
when it "stalls" as you say, do you mean just quits entirely? or just stops "grabbing" but still spins?

I have some suggestions but im not entirely sure i understand your original post.


EDIT : i see your post above, so you did solve it with an additional ground?

If so, this is familiar to a problem I had with mine, I had it in the shop for a starter install and my mechanic installed the new starter and put the multimeter to my battery and it was showing lower voltage than it should have been, so he added another one to my negative battery terminal (still have it on til this day) and found better results.
A few months pass, my car dies and I found out my DME was slowly getting wet and/or moist, as some things are grounded within the DME itself, its probable.