What is this thing?
Thread Starter
Junior Member
Joined: Apr 2009
Posts: 54
Likes: 0
From: Billings,Montana
Year: 1988
Model: Cherokee
Engine: 4.0L

In the bottom right hand corner with all the hoses coming out of it? Directly to the right of the first fuel injector.
CF Veteran
Joined: Aug 2009
Posts: 1,127
Likes: 12
From: 9000 ft, CO
Year: 1999 XJ
Model: Cherokee
Engine: I6 4.0L
The junction you see all the vac lines running into allows you to separate the throttle body &/or intake manifold from the rest of the engine. It helps to eliminate the guesswork when plugging everything back in. If you choose to remove your throttle body or intake manifold, disconnect the vacuum lines there rather than at the throttle body or manifold.
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