whining fuel pump

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01-17-2002 | 04:33 PM

costill91Z

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Joined: Nov 2001

Posts: 399

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From: Columbus, OH

Car: '02 Rodeo

Engine: 3.2 V6 DOHC

Transmission: 5spd

Axle/Gears: 4.30 Dana 44 Rear 10 bolt front

whining fuel pump

since i finally got the z back from the shop, i noticed that the fuel pump has a whining noise. if you listen to the c/k trucks, or astro and fullsize vans, they have the same noise b/c of the high pressure pump.
does anyone else's pump do that?
also what is the correct pressure it should be?

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01-18-2002 | 11:41 AM

john5.7 87Iroc

Senior Member

Joined: Jul 1999

Posts: 700

Likes: 0

From: Pineville, NC US

Car: An '87 Italian Retard Out Cruisin'

Engine: LS1 install in progress

Transmission: 4L60e

Axle/Gears: 9 bolt

My new one does the same thing because they didnt reuse the pulsator thingy. Mine seems to vary though. Sometimes a quite whine sometimes a loud whine. I dont know if the varying loudness is normal or not.

Last edited by john5.7 87Iroc; 01-18-2002 at 11:43 AM.

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01-18-2002 | 08:41 PM

Z's r Best

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Joined: Dec 2000

Posts: 408

Likes: 0

From: Chesterfield, VA

Car: '86 IROC, black and sharp

Engine: 305 tpi, bone stock

Transmission: 700r4

Axle/Gears: 3.42 pos w/rear db

Hey, if it works, don't worry about it. My black 86 IROC buzzes so lound you can hear it over the radio (till I start the engine). My red 86 IROC is so quiet I thought it was broke till the engine started and ran.

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