Hey guys,

Just picked up my new 1993 Cherokee Country XJ and i've been doing a bit of work on it.

I ran into this piece today, I took a few picture of it. It is round, black, looks like a submarine, is located actually inside my front bumper, and has one tiny host attachment. I unplugged it (because it was loose rolling around) and it did make a small gassy sound. I hooked it back up and everything seems to be fine. I took pictures of where it runs up into the engine and goes into a couple of different places.





The actual piece





side view





Located up in my bumper, metal piece is (was) all jacked because i had to pull the bumper out to get it back in place. fixed now.





this is the connector piece





runs into engine, splits into this piece, and keeps going





stops here up by the windshield and splits into this piece, and keeps going...





finally comes around the right side of engine bay and goes into engine on right side


I'm not a mechanic so help me out here... is this part important? what does it do? How do I know if this part is working?

Thanks for the help, i'm enjoying myself here already!

 

It's a vacuum canister.

 

Thanks Bighouts, i'll google that!

Is this part important?

 

Solved - Found a previous thread on vacuum canister.

https://www.cherokeeforum.com/f2/mai...eservoir-5163/

 

Basically it keeps vacuum on the engine after it shuts off I guess. A lot of people relocate them into the engine after putting on an aftermarket bumper. You can also just remove them and plug the line, however that may cause your cruise control not to work if you have it.

 

When you have your foot in it, the intake manifold vacuum crashes. That vacuum reservoir holds the intake vacuum you had before to operate things like the heater/AC flaps, the cruise control, and more. The big line "charges" it, and the little line does things. Idk where the check valve is in the large line. The ball might crack, dangle, and get relocated. If you can go back and find it!

At sea level we are under about 14.7 Lbs pressure from the air above us. It's using the difference, the vacuum from the engine to create force on a rubber diagram to do work, like push a lever to move a heater flap.

 

Awesome guys! Thanks for all of the info. I have everything hooked back up for now and have it relatively secure. I'll leave it where it's at until I get a new bumper. I'm sure i'll be posting more questions soon!

 

I hate it when I need a new bumper.

 

Unforunately, it needed a new bumper when I picked it up... I'll manage like this for my first winter season

I have ripped a lot of the bottom under hanging stuff and trimmed the fenders, I'll update tomorrow. Below is what it looked like when I got it. Better yet - I'll gonna start a Jeep Journal!

 

Here:

 

Great. Thank you Cruiser