gearheadstik Posted June 25, 2009 Share Posted June 25, 2009 I'm having ac problems with my car and first thought it was low on freon...Then realized the compressor was running and the ac line was ice cold... I have traced it down to the vacuum tank operations… there are 2 wiring harnesses on it, one is defiantly a solenoid of some kind.... Vacuum lines attach from it to the intake, ac control, heater valve, vacuum pump, and charcoal canister... I want to know what controls the electrical parts to it and can’t seem to find what I'm looking for in wiring diagrams. I can manually hook up the ac control line to the intake vacuum and the cold air works but you lose it in boost in this way... Any help would be appreciated Quote Link to comment Share on other sites More sharing options...
DeleriousZ Posted June 25, 2009 Share Posted June 25, 2009 http://www.88hybrid.com/vaclines/vaclines.htm does that help? MOAR vacuum line diagrams. http://www.thumper300zx.com/z31/vacuum/vacuum.htm Quote Link to comment Share on other sites More sharing options...
gearheadstik Posted June 25, 2009 Author Share Posted June 25, 2009 It does some... I see the one is the heater control valve or water cock as they call it is attached to the solenoid.. I wonder what the one on the other side of the tank is... it may be the pressure switch for the vacuum pump... Still does not explain why I'm not getting any vacuum to the ac control valves... It is not the line because it has no vacuum at the nipple on the tank. Quote Link to comment Share on other sites More sharing options...
gearheadstik Posted June 25, 2009 Author Share Posted June 25, 2009 Update... I just found a post saying that it was the vacuum pump switch on the other side of the tank... At least I know this now and can do some further looking into it.. Thanks Quote Link to comment Share on other sites More sharing options...
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