not starting right

[1989flatbed]

my 2.8 efi doesnt start right
turns over good fuel pump runs will not start
dump a shot of gas fire up and work fine untill i shut it off again
doesnt matter if its cold or warm does the same thing but runs fine once started
not sure what to try

[T Man]

TBI or Multiport converted?

[1989flatbed]

Tbi

[T Man]

Have you tried pumping the gas petal as you cranked it?

[Sparky2263]

Check engine lamp on?

[1989flatbed]

yes and yes

[jjwalker]

I will put money on either a MAF or IAC...

[Sparky2263]

Need to pull the code by jumpering A & B of the ALDL. If you don't know how, we've got that info here also. The code generated will assist greatly in diagnosis.