2001 Pontiac GP 3.8L Engine Stalls with P0101 MAF Code - Diagnosis and Solutions

I'm experiencing a recurring engine stall issue on my 2001 Pontiac GP 3.8L, specifically when driving at highway speeds (70 mph) or cruising at lower speeds (35-50 mph). The vehicle stalls abruptly and fails to restart immediately after, even though the engine is still firing and fuel is being delivered. The first incident occurred while driving on the highway at 70 mph. After stalling, I was unable to restart it despite the engine appearing to be running. A mechanic scanned the system and found multiple codes: P0101 (Mass Airflow Sensor), P0107 (MAF sensor range/performance), P0404 (Dutchman fuel pressure issue), P0420 (catalytic converter efficiency), P1107, and P1404. After clearing the codes, the vehicle started normally and no further issues were observed. Shortly after returning home, the problem repeated at 35 mph — this time I was able to restart by unplugging and reinserting the ECM/PCM fuses. A diagnostic reader later showed only the P0101 code during a drive at 50 mph. After clearing it, the car restarted successfully. Notably, the Check Engine Light (CEL) never illuminated during any of these stall events — though it had been on for over a year due to suspected catalytic converter failure. I replaced the converter previously, but it appeared to fail prematurely. The vehicle idles and starts well otherwise, though I notice an extra second delay when starting. The diagnostic reader also showed 'NOT RDY' status for several emission systems: Catalytic Converter (CAT), Evaporative Emission (EVAP), and Exhaust Gas Recirculation (EGR). This indicates that these monitors have not completed their required drive cycles. What's unique to my case is the combination of stalling, failure to restart, and the presence of P0101 — a symptom I haven't seen documented in other forums. The MAF sensor does not appear to be the only suspect: when I disconnected it during testing, the engine stalled immediately, but the scanner showed no error code at that moment. Before replacing the MAF sensor (which would cost around $130), I'm seeking expert insight into whether this behavior points directly to a failing MAF or if other factors — such as wiring issues, connector corrosion, or EGR malfunctions — could be responsible. I've already tested the connector by wiggling and tapping it while running, with no visible issues. Any advice on next steps (e.g., cleaning vs. replacement) would be greatly appreciated.