3.1 V6  SFI
Check engine light codes for CAM SENSOR and EGR. Changed spark plugs and wires changed fuel filter.

Question: Car stalled  wait a sec ran was good for month but lately everyday or so stalled out until one day stopped running. Starts for  a second then stalls.

Coil pack and ignition module tested good. You can hear the fuel pump come on there's gas at the shrader valve where you put PSI gauge  on the tree. Changed the gas filter. Took it got it
scanned  EGR code and (CMP) Sensor code came up.

Answer: A cam sensor code can cause a hard start or no start. The wires right at the sensor get swollen / broken. The sensor is under the power steering pump.

Starting and stalling after a few seconds almost sounds like a theft / security problem, but you need to get cam code fixed first.

There are several different things that can cause an EGR code, depending on what the exact code is. Be sure to
check ALL fuses as well.
1997 Buick Century Cam Sensor And EGR Codes

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