maddzz1 Posted June 2, 2008 Share Posted June 2, 2008 I found a vacuum line (rubber tube; i think its a vacuum line) that connects to the top of my front diff. (its 4wd). the line runs up along the upper control arm and up next to the brake booster. Then it just has a plastic plug in it. What is it? Is it suppose to be plugged or is it supposed to connect to something? Link to comment Share on other sites More sharing options...
BLHTAZ Posted June 2, 2008 Share Posted June 2, 2008 That is the breather/vent for the diff. ;) Link to comment Share on other sites More sharing options...
Eagle Posted June 3, 2008 Share Posted June 3, 2008 That is the breather/vent for the diff. ;) Yep. It should have a white nylon vent plug at the upper end. Link to comment Share on other sites More sharing options...
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