Thanks for the reply. Yes, I have considered the injectors. I did the screwdriver/ear test on them and they all sound even. I pulled all the plugs and they are all equally carbon fouled black. They smell like gasoline.
Main reason I suspect fuel pump is the loud whining it begins to emit when car has began to warm up, a telltale sign of soon failure (so I've been told). Its not as loud when first started.
Any specific test for injectors using ohmeter I can use??
Thanks again.
Also, I have considered buying the Delphi fuel pump. Airtex seems to suck and fail, and the Bosch is real expensive. Any experience with these pumps anyone? I know they supply GM with lots of parts.
Was def running rich, a little better now that I've cleaned all connections and adjusted TPS for proper contact. I plan to put new NGKs in there if I can't clean mine off, they only have about 300 miles on them (NGK also)