mtadd162

So went out for a lil wheeling today. When I came back to hose off some of the mud i noticed the Vacuum Canister was gone Did a quick search and noticed that the ball seems to help control a few a things but i noticed that people were always looking for cracks or such in there vacuum lines or the ball itself when they were having problems. But what about if I just cap the line off?
Im probably going to go back there tomorrow and see if I can spot where it fell off anyway. Hopefully i didnt run it over though lol

Thanks

the jeep man 94

well my lil bro broke mine on my one jeep but i just put a bolt in it and it works fine

mtadd162

yea thats what im thinking. but at the same time, if plugging it works. why does everyone waste their time finding a new home for it when putting on a new bumper lol.

jronald

Best guess is the cruise will no longer work, and the AC vents will do funky things. That is a guess!

Ron

freegdr

it stores vacuum for the proper function of cruise and vents with out it ac will blow out defrost only and cruise will no longer work

mtadd162

like i said i did a search and saw that the ball helped control the things you said + 4x4 engagement. well i capped mine last night, and this morning the a/c blew through the vents and cruise worked at 40mph...and engaged 4x4 and everything seemed to work ok.

i did walk the trail i wheeled on and came up empty handed, so we'll see if anything changes. other than that im not going to worry about it

XJ?2010

Things will function properly however the engine needs vacuum resivoir to run at 100% you may notice your idle being choppy or some power braking issues. your 4x4 is gonna work fine its the older jeeps with vacuum dana 30 that wouldnt work.

mtadd162

interesting. How does it work exactly? The truck is looking for a certain volume of pressure in order for it to work 100% correctly?

gpXJ

The problem will come when you are on the highway and the engine is under load. At that point there wont be enough vacuum force to spare to switch your vents from defrost to anything else. Also your cruise won't work.

freegdr

its there for a reason i dont think they had extras from the previous year and just threw them on there some things not getting vacuum that should be

mtadd162

theres one on ebay that says for 84-96 xj's...looks the same? but apparently it wont work the same?

93gc40

Any XJ Egg will work in any XJ. The vacuum is use for emissions control, AC, Brakes, Cruise, Front axel in early XJs, heating and cooling. Sometimes everything will work without it sometimes not.

Legocar

So will a 90 ball work on a 94 mine had a crack in it found one at the junkyard.

xj_maniac_newb

yes. You can use any vaccum resevoir (some from different vehicles look like a tin can) as long as the tube fits on the canister.

DFlintstone

Guys even do custom stuff, relocate them. I saw one sweet job mounted below a Renix expansion bottle. A glass jug would work if you could hook up the lines! I finally wired mine in place after it was just loose down there a couple years. The "proper" bolts'n bracket might be different, on 92..sort of doubt it though.