Followup: The fuel pump is new.
LMP, I saw a previous note from you on a dirty MAP sensor. Could this be it? I don't have any codes.
Also, while under the vehicle, I noticed a rattle when shaking the catalytic converter (from its inside). Could a plugged CC be part of the issue? How would one check this out?
I guess I could install a test-pipe to gauge how restrictive it is. This vehicle (I THINK) doesn't check the downstream O2, so dropping the CAT won't screw up the PCM or light a code - RIGHT?