Im working on a 95 buick century the fuel pump was making a awful whinning noise like it was about to go out so I changed the pump out…I checked to see what might have made it go out like that because this is second pump in six months. Long story short im only getting 8.7 volts to the pump with KOEO with KOER its drops down to 4 volts I know this can cause the pump to starve for fuel and make it go out but I can not figure out whats causing it to drop like it is I have performed a voltage drop test on both the positive and negative sides of the system and the drop is def. on the positive side…if any suggestions please help
Try the fuel pump relay and check the wiring to and from it. Bad connections and or corrosion possibly. Older cars mean older wiring…
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