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fuel pressure regulator

  1. 03 Chevy Malibu LS replaced fuel pressure regulator & now its worse??

    Gen 5 & 6 Problems/Service Issues/Troubleshooting
    2003 Chevy Malibu LS 3.1 V6 110,000 miles. I just replaced the fuel regulator because gas was coming out of it. Now very rough idle feels like it will stall. Sorta revs up and down on its own. It didn't have any of the common symptoms of a bad regulator except for the very strong odor. I...