1993 Cadillac STS stump the pros

1993 CADILLAC STS
65,000 MILES • V8 • FWD • AUTOMATIC
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hi, need help, have a minor electrical humming noise when engine running, sounds like a fuel pump noise, dash lites and headlites pulsating rapidly at idle, but normal when above idle speed. Everything else ok, no codes. I think it developed after i had the fuel filter changed, not positive though. Any clues where to start? thanks
Dec 10, 2008 at 12:01 PM
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.
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