1999 - 2003 7.3L Power Stroke Diesel

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Old

Mar 31, 2012 | 10:44 AM

#1

Joe28443

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Joe28443

Joined: Jul 2009

Posts: 1,163

Likes: 4

From: Hampstead NC

Noise?

When I go to start my truck and turn the key to the on position and waiting for WTS light to go off I am hearing a what kinda sounds like a humming noise. Is that anything that has to do with the fuel bowl? Thanks

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Old

Mar 31, 2012 | 11:48 AM

#2

94WhiteF250

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Joined: Sep 2008

Posts: 419

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From: Alfred NY and Long Island

I want to say your vacuum pump....but what the heck do I know haha

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Old

Mar 31, 2012 | 11:56 AM

#3

caverjoe

Laughing Gas

Joined: Apr 2007

Posts: 1,238

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From: North Port, Florida

I would say you are talking about the fuel pump. It should stop in about 20 sec. after you turn the key to the on position,

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