Hi there I have a 88 GMC 5.7 TBI that was running great I took it out and put it in my Chevy van , since I fired it up it has had this surge and misfire. I used a new swap loom and new fuel system . I have been over everything and all seems good . I am getting codes but no conclusions. Codes are , 32, 33, 34, 42, 44, 45. I'm lost as to what is causing this.
