This is a 91 Camaro RS with the 3.1 v6. I recently removed the throttle body and plenum to get better access to changing the coolant temp sensor and
maybe check out the fuel injectors. The sensor was replaced...nothing was done to the injectors. The plenum and throttle body were reassembled with new gaskets.

OK...heres the problem. I now have no fuel pressure(can't hear the fuel pump whir for 2 seconds when cranking(cranks good). Before removing the plenum...the car would start up and run...everything was pretty good. I have checked and ruled out the fuel pump relay. The fuses on the fender and fuse block look good and have been swapped out. Could I have disconnected a ground or done something else when I had the plenum off? Is a VATS related problem...despite the fact that it cranks. Thanks for any help.