1988 Dodge Power Ram LE150 won't start when cold or dies soon thereafter

[garcigar]

What I have: 1988 Dodge Power Ram LE 150, 5.2L, EFI, 4wd, ps, air, auto trans, single cab

What it's doing: intermittently will not start in the mornings, or when cold. Or, will start right up but dies while driving within 5-10 minutes.

What I have done so far: new computer, new fuel pump, new distributor, new coil, new fuel tank screen, new fuel filter, new ASD (auto shut down), AND IT STILL WON'T START THIS MORNINGING after running fine all day yesterday

Help please