jeep stuff Posted January 17, 2010 Share Posted January 17, 2010 my 4x4 won't engage and my heat won't change off blower. I'm wondering if there is some way i can fix my vacume problems i will put some pics up in a min Quote Link to comment Share on other sites More sharing options...
Geonovast Posted January 17, 2010 Share Posted January 17, 2010 Check the vacuum lines going to the vacuum reserve tank in the bumper. There may be a hole in the tank too... that's what caused one of mine to get stuck on blower. As for you 4wd, best to just do this now and get it over with. Quote Link to comment Share on other sites More sharing options...
jeep stuff Posted January 17, 2010 Author Share Posted January 17, 2010 i don't have lines running threw my bumper there all on the firewall Quote Link to comment Share on other sites More sharing options...
Geonovast Posted January 17, 2010 Share Posted January 17, 2010 Check inside the passenger side of your bumper, there's supposed to be a vacuume reserve tank there. If there's no lines going to it, that may be your problem right there. Quote Link to comment Share on other sites More sharing options...
jeep stuff Posted January 17, 2010 Author Share Posted January 17, 2010 i found a line going down therre. its taped to a small black vacume hose but i can't see or find that pump to see if its hooked up Quote Link to comment Share on other sites More sharing options...
deziped Posted January 18, 2010 Share Posted January 18, 2010 With the bumper off you'll see it. Quote Link to comment Share on other sites More sharing options...
Eagle Posted January 18, 2010 Share Posted January 18, 2010 i found a line going down therre. its taped to a small black vacume hose but i can't see or find that pump to see if its hooked up There is no pump. The vacuum reservoir is either a round ball (about softball size) if you don't have cruise control, or an elongated shape like a very fat sausage if you do have cruise, that should be mounted inside the front bumper on the passenger side. The vacuum lines to it are routed under the battery tray area. Then they go back to the firewall, where there's a sort of junction block, and then there's a line that goes to the transfer case to a vacuum switch that controls the axle disconnect. Quote Link to comment Share on other sites More sharing options...
jeep stuff Posted January 18, 2010 Author Share Posted January 18, 2010 thank you that could fix my 4x4 and heat i appreciate it Quote Link to comment Share on other sites More sharing options...
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