CruiZZZin 78 Posted September 22, 2007 Share Posted September 22, 2007 I have a 78 280z with air conditioning. I'm replacing old vacuum lines and was wondering what this thing is. The vacuum lines run through it. Do these things go bad and lose vacuum? Please let me know I could find this thing in my shop manual. Pic is in the link http://www.putfile.com/cruizzzin78 Kyle Quote Link to comment Share on other sites More sharing options...
CruiZZZin 78 Posted October 4, 2007 Author Share Posted October 4, 2007 Anybody?? Quote Link to comment Share on other sites More sharing options...
datsun40146 Posted October 4, 2007 Share Posted October 4, 2007 they control the air-con Quote Link to comment Share on other sites More sharing options...
big-phil Posted October 4, 2007 Share Posted October 4, 2007 electric vac switch. It gives vac pressure to what ever, heater valve, A/C, fast idle???? Quote Link to comment Share on other sites More sharing options...
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