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Q:

changed the fuel pump on 1997 GMC Sonoma

Rookie cbe0621eac06868b3efe0d8d1d3611e23c60d3114864ea2ec19a68cfbd3eebab
Changed the fuel pump but whe I go to turn the car on it will only stay on for a second then back fire then it turns off
(1) Answer
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Check your fuel filter, make sure the fuel pump is getting constant power, check for consistent spark and compression.