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  #1  
Old 07-23-2022, 01:41 PM
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stonybrookpictures stonybrookpictures is offline
232 I6
 
Join Date: Nov 30, 2020
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Eliminate vacuum control for heater

Has anyone done this. I am considering simple cable control if its feasible.
Simple, reliable, cool.
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  #2  
Old 07-23-2022, 01:57 PM
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devildog80 devildog80 is offline
258 I6
 
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Maybe a cable from a CJ would work? Sure there are other models that used them too.

Keep it Jeep
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'84 Grand Wagoneer, 401 V8 (.030 over), MC2150 HA Comp, 727 auto, Selec-trac NP229, AMC 20 REAR - D44 FRONT - WT 3.31, 4" high arc spring lift

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  #3  
Old 07-23-2022, 03:46 PM
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Would need 2 cables.
one for defrost and one for floor vents.
could be done but vacuum is cheap/easy/works
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  #4  
Old 07-23-2022, 08:09 PM
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You can replace the vacuum actuators with cables, but why bother? It's a very simple vacuum system. As long as the few hoses are in good shape and in place, it will work.
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  #5  
Old 07-24-2022, 08:00 AM
wiley-moeracing wiley-moeracing is offline
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Unless the vacuum switch is worn out and you are leaking vacuum through there, then a cable would be better.
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  #6  
Old 07-24-2022, 04:57 PM
johnsonic johnsonic is offline
258 I6
 
Join Date: Mar 12, 2015
Location: Oregon
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I took my switches (4WD too) apart, lapped them on a plate of glass for a uniform surface, re-assembled with a little grease. Not worried about a leak from there anymore.
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  #7  
Old 07-25-2022, 10:01 AM
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The vacuum switching from the push buttons has some mechanical sophistication. Kinda neat how it works, if you take the controls out and look. Converting that to cable would not be straightforward. Thru '75, the CJs use a panel hanging under the dash, with cable controls. Utility Trucks/Wagons too. AFAIK there is no aftermarket source for thes, so you'd need to fab or scrounge to get one. The cable controls for the '76-up CJ are avaiable from the aftermarket, but these Jeeps embed the cables in big flat dash, and there is no panel per se.
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  #8  
Old 08-01-2022, 10:23 AM
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rang-a-stang rang-a-stang is offline
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I tend to agree with most. The Vacuum under the dash is basic and pretty stinkin reliable. If it aint broke don't fix it. BUT, like Wiley-Moe said, if it is broke, you could fix it that way. Then again, all the vacuum parts (motors, switches, and lines) are pretty cheap and easy to replace.
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  #9  
Old 08-13-2022, 05:39 PM
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sierrablue sierrablue is offline
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Location: Northern MN
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I've been curious about this kind of thing on mine too. Mostly because thinking about the EV conversion; it would be the one thing that would need any vacuum, so if I could eliminate the vacuum setup, then I wouldn't have to run a vacuum pump, so one less thing to draw power.

'Course, in my case, the EV conversion may mean that I completely redo the HVac system anyway. The motor I've been looking at is water cooled though, and you can use the tiny radiator for it as a heater core...

I've been thinking about it too though.
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