Replaced fuel pressure regulator. Now SES light is on & car's a little sluggish and engine sounds like it's working harder. Any answers?

Asked by Oct 29, 2007 at 06:24 PM about the 1999 Cadillac DeVille Sedan FWD

Question type: Maintenance & Repair

1 Answer

62,035

Could be a malfunctioning injector or misfiring cylinder. Probably unrelated to the fuel press. regulator replacement. Have the codes read and see where they take you from there.

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