the tps and iac are both new?
did you check the schrader valve to see if there is fuel there? with the vacuum unplugged there should be around 38-40 lbs
this is pretty strange. you made sure all connections are tight?
the only other thing i can suggest is try putting the other parts back on one at a time until to see which part is the problem.
maybe someone else will have had similar problems and will chime in.