[tdz16]

Hey Guys (maybe gals), My mustang has been giving me problems for a while now. It runs very rough at idle and throughout the rpm range. It finally put the CEL on the other day and I got around to scanning it. I came up with a 511-read only mem test failed, 542-fuel pump circuit open-pcm to motor, and 543-fuel pump circuit open-battery to pcm. The eec has a custom chip installed, motor is a 347, edelbrock heads, power plus intakes port matched, cam(not sure which one), 155 fuel pump i believe, afpr with gauge reading around 39-40psi at idle and 30lb injectors.....please give me some insight. Thanks.
~Tom