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Originally Posted by spencer1026

My 1999 Cutlass with the V6 3600 Engine is stalling out at random in any situation. The engine RPMs drop, then the engine stalls. I loose power braking and power steering, but all other power is still working- the interior lights, radio, headlights, etc. This has happened several times. Most of the time its while I'm driving; not stopped, or idleing. We've been to the dealership, had the alternator replaced, and the ignition switch/core. The dealer thought the theft system was malfuctioning, leading to the engine cutting out. This doesn't seem to be the issue. A co-worker has recommended checking the mass air flow sensor. I'm not sure if this could be a valid possibility. Any help or suggestions would be greatly appreciated. Let me know if there's more info I could provide that would help diagnose. Thanks!!

Does it start right back up, if not do you have spark and fuel pressure when it happens?