Hello and thank you in advance for any help you can offer. I have a 2000 Lincoln LS V6 with ~110k miles that is near mint condition, everything works perfectly. Except...sometime last year the car stalled at an intersection. The stalling continued intermittently, but has been increasing in frequency over time. There are no codes thrown, no check engine light comes on. When it stalls I can sometimes keep it running by pumping the gas pedal, other times the gas pedal has seemingly no effect. So I gave the car a full tune-up, knowing it was near that time anyway. New plugs, COPs, IAC valve, EGR valve, upper and lower intake manifold gaskets, fuel filter, etc. Same stalling issue. Car drives like brand new 99% of the time, then stalls at seemingly random when below 1500 RPM. The car always start right up, but continues 'choking' or stalling until I can get it revved above 2000 RPM for a few seconds. Numerous trips to dealers finally resulted in them telling me they detected a fault in the fuel pump circuit, but they couldn't diagnose or fix any further. They suggested fuel pump, fuel pump relay, front ECM, rear ECM, or PCM. I found a leak around my jet pump seal as well so I went ahead and replaced both the jet pump and fuel pump. No noticeable difference, still the exact same stalling problem. I can't find any info on a front or rear ECM. Relay is fine (swapped with fog lamp relay, same problem). Fuel pump fuse is fine. How can I test to see if it's the PCM or something else like maybe the fuel pressure sensor or bad fuel injectors? Or, what should my next step be in diagnosing the issue?