Fuel pump relay is buzzing?

JESSIE420B

MEMBER
1996 BUICK PARK AVENUE
3.8L
V6
2WD
AUTOMATIC
150,000 MILES

The fuel pump won't kick on and one of the relays is buzzing up under the passenger side dash. I replaced the relay still buzzes. I don't know what the problem could be.

Sunday, December 8th, 2024 AT 9:43 AM

5 Replies

KEN L

MASTER CERTIFIED MECHANIC
48,323 POSTS

Usually this will be caused by a bad ground, weak battery or a shorted accessory. Does the engine crank over? Which relay is buzzing can you upload an image?

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Sunday, December 8th, 2024 AT 10:31 AM

JESSIE420B

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5 POSTS

Cranks won't start. Replaced fuel pump, still won't kick on. Still buzzes when it doesn't buzz the back air suspension will turn on and run. When it is buzzing back air suspension won't run.

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Tuesday, December 10th, 2024 AT 1:46 PM

JESSIE420B

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5 POSTS

I bought an obd2 tester throws misfire monster code, fuel system monitor code, catalyst monitor code, oxygen sensor monitor code, oxygen sensor heater code, and EGR system monitor code.

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Tuesday, December 10th, 2024 AT 1:50 PM

JESSIE420B

MEMBER
5 POSTS

And code P1655.

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Tuesday, December 10th, 2024 AT 1:51 PM

KEN L

MASTER CERTIFIED MECHANIC
48,323 POSTS

Thanks for the video. Did the relay make the noise before the fuel pump, replacement? If not, I would remove the fuel pump and get another one because it sounds like it is defective. Thanks for the video, it helps. Also, there is a ground wire off the relay and fuel pump in the left kick panel, and the relay ground is at the right end of the engine, I would check these grounds first. Check out the images (below). Please let us know what happens.

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