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Old 03-10-2011, 04:01 PM   #1
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what is this? what is it for?

I have to get a new battery and so I took out my battery tray to clean it up and paint it.... I then found this round thing with two vaccum lines coming from it..... the pics might be out of order but the one with the round thing and two vac lines coming out is what I'm talking about and the other two pics are where the lines go..
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Old 03-10-2011, 04:03 PM   #2
i'm......... lost

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i love your sig. and im interested in any answers

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Old 03-10-2011, 04:29 PM   #3
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Quote:
Originally Posted by BLEGAN
i love your sig. and im interested in any answers
Haha thank you, it seems like every big repair or restoration on my jeep starts off like my signature and ends in disaster!
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Old 03-10-2011, 04:35 PM   #4
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The big round thing is a vacuum canister, usually used for cruise control.
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Old 03-10-2011, 04:37 PM   #5
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Just noticed this was in the yj forum. This may be for the vacuum operated front axle, not sure though someone that knows will chime in i'm sure.
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Old 03-10-2011, 04:38 PM   #6
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I think that's the vac reserv. There to hold vac pressure. Somebody else may know better though.
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Old 03-10-2011, 06:12 PM   #7
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You're carb'd I take it? Looks like emissions bullshit to me, but don't take my word for it. I'm an EFI kinda guy.
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Old 03-10-2011, 06:28 PM   #8
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yes the big round ball looking thing is a vacuum reservoir, its used to keep vac on certain things at WOT so you dont lose them. the one pic looks like a series of electrically operated vac solenoids, and the last one i have no idea.
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Old 03-10-2011, 10:43 PM   #9
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first pic vacuum resevour
secound cylinoid operated vacuum switches used for your emisions
Last picture is check valve and back fire valve
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Old 03-10-2011, 11:11 PM   #10
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Table of Contents
great website. check it out for all your needs.
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Old 03-11-2011, 11:02 AM   #11
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Well thank you for all the help guys... one last question if its for the emissions on my jeep meaning my ecm and I am nuttered, can I remove and cap it?
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Old 03-14-2011, 05:59 PM   #12
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I installed an MC2100 and I removed the entire vac. reservoir (ball) and all the pulse air lines (bracket with 3 elbows) and everything attached to them and it runs fine. Instructions said to do this as well.
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Old 03-14-2011, 06:07 PM   #13
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Originally Posted by WhyJayPA
I installed an MC2100 and I removed the entire vac. reservoir (ball) and all the pulse air lines (bracket with 3 elbows) and everything attached to them and it runs fine. Instructions said to do this as well.
Uggghhh I am so close to buying the mc2100 but yet so far away... good to hear that, that's what I was hoping for!

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