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Question on black box on drivers side fender??

24K views 23 replies 12 participants last post by  Bakes 
#1 ·
There is a black box on the drivers side fender with vacuum lines running to it on the front top of the black box there is a inlet or outlet with nothing on it, it is open does this nipple about 5/8 in size does it need a plug? does it take a hose? Or is supposed to be open? thanks
 
#14 ·
Pictured is a California emissions Jeep - if you have a Jeep that just falls under federal emisisons you have a little purge solenoid, the big charcoal canister, a hose going in from the gas tank, and a hose going into an intake manifold vacuum port. The big 5/8" hose will have a breather cap "hat" on it.
 
#18 ·
thanks for the info. My jeep does not have any breather cap on it, just open. would this affect vacuum on my jeep? I am having an issue with my a/c, max on the a/c will switch from front vent to defrost when on the highway. I checked everything and could not find anything else.
 
#23 ·
Welcome to the Forum, from Cave Creek AZ.
 
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