1987 code 42

[jgroover]

Hi to all,


Ive got a 1987 chevy 1/2 ton with 305 and th400. Ive got a random code 42 that is kicking my butt. So far I have put 2 ignition control modules in, both GM. And I have put a used computer in. Every time I change out something it waits a couple weeks and then sets the code 42 and I can feel the difference in the engine and the shifting of my transmission. Its random though. After 2 weeks or so of replacing a part, it will then set and randomly die and randomly run rough. Any help would be appreciated.


Josh