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Mystery Vacuum canister

Old Aug 26, 2011 | 08:52 PM
  #1  
mrbug's Avatar
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From: Tennessee
Year: 1988
Model: Cherokee
Engine: 4.0L
Default Mystery Vacuum canister

I was told that I needed one of these but I don't know how to hook it up. After my Dad ran into it, he just spliced the vacuum lines together and I want to get them hooked back up correctly. I know that it mounts down by the radiator on the passenger side, I just don't know where the vacuum lines go from/to it. Does anyone have a vacuum diagram or know where I can get one?
Thanks,
Brad
Attached Thumbnails Mystery Vacuum canister-vacuum.jpg  

Last edited by mrbug; Aug 26, 2011 at 08:55 PM.
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Old Aug 26, 2011 | 09:00 PM
  #2  
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From: Broward County Fl.
Year: 1989 xj sport 2dr
Model: Cherokee
Engine: 12 hole bosch Injectors
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the big line get vacuum from the motor the smaller one supplys vacuum the the dash vents pass side fire wall
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Old Aug 26, 2011 | 09:01 PM
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From: Broward County Fl.
Year: 1989 xj sport 2dr
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Engine: 12 hole bosch Injectors
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no vacuum line routing sticker under you hood?
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Old Aug 27, 2011 | 07:11 AM
  #4  
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From: Tennessee
Year: 1988
Model: Cherokee
Engine: 4.0L
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Originally Posted by freegdr
no vacuum line routing sticker under you hood?
Unfortunately no, AMC did not see fit to include that or a sticker showing the routing for the belt.
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Old Aug 28, 2011 | 09:08 AM
  #5  
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Model: Cherokee
Red face a nite at the improv

ok that thing is part of the evaporative recovery system.. it mounts behind the passenger side of the bumper on mine.. it sopps up vapors coming from the fuel tank .. or something like that.. the haynes manual has a schematic for vacuum lines but isn't real helpful when it comes to routing
the big line goes to the charcoal canister on the firewall and the small line plumbs into the vacuum system. again.. routing.. it's a bear and you may have to get creative.. mine was in a wreck a number of years ago and when it was fixed whoever did the repairs was a real "master" at jimmyriggin.. over the years i have been grabbin replacement vacuum lines at wrecking yards off of jeeps that still have them.. i have noticed changes in routing of the lines between the different model years so improv becomes a real issue and a talent you will have to develop
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