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1978 - 1996 Big Bronco
Small plastic box below battery?

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Small plastic box below battery?

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Old

Apr 7, 2004 | 10:16 PM

#1

Doug44

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New User

Joined: Mar 2004

Posts: 21

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From: Austin Texas

Small plastic box below battery?

Hi, I have a 1988 Bronco 351w. There is a small plastic container that is below the battery on the passenger side. It has 2 hoses coming from it. One hose goes to the intake and the other hose connects to a rail that goes to the rear of the vehicle. I just noticed that one of the hoses is broken and looks like it has been that way for a while. Can someone tell me what this thing is and what is its purpose?

Thanks...Doug

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Old

Apr 7, 2004 | 10:20 PM

#2

screwy

Cargo Master

Joined: Aug 2002

Posts: 2,117

Likes: 8

From: Over Yonder, MN

If it's anything like my truck it pulls vapor from the gas tank and pipes it into the intake. It's part of the emissions system.

Last edited by screwy; Apr 7, 2004 at 10:27 PM.

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Old

Apr 7, 2004 | 11:16 PM

#3

DW2455

Posting Guru

Joined: Jul 2003

Posts: 1,486

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From: Independence, MO

yup thats what i was thimking. DW

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Old

Apr 7, 2004 | 11:24 PM

#4

Tidybowlman0

Senior User

Joined: Mar 2004

Posts: 107

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Just a guess but I think it has something to do with emmisons also......Good luck!!!!

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Old

Apr 8, 2004 | 02:17 AM

#5

Techguru

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Yes, that thing deals with emissions. If I remember right, its called a gulp valve. I'll need to verify though.

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Old

Apr 8, 2004 | 09:09 PM

#6

Doug44

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From: Austin Texas

Thanks for the info. I think I will plug the vacume line and forget about it.

Thanks...Doug

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Old

Apr 8, 2004 | 10:06 PM

#7

bigric

Fleet Mechanic

Joined: Aug 2001

Posts: 1,526

Likes: 0

From: Round Rock, TX

It's called a carbon canister, although it doesn't look like a canister these days. Leave it alone unless you've got a good reason to unhook it.

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