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Level: Jeep Commander
90' XJ Heat/AC schematics
I was hoping someone could explain to me the heat/ac controls and how they work before I tear into mine. When I switch from one setting to another on my controls the air flow does not change positions. meaning from defrost to vent, etc. I was unsure if this was a vacuum system that switches the flow if it was mechanical or electrical. I have no background info on it. Any help is appreciated.
Super Moderator
Re: 90' XJ Heat/AC schematics
Those controls for the vents are vacuum operated. Defrost is default. You probably need to establish vacuum to them. The most common thing is a cracked reservoir which is located behind the front bumper
230 hp 4.3L Chevy
Built 4L60E with manual lockout
Atlas 4 speed
Griffin radiator
On board air
Warn 9.5ti on custom bumper
7.5" RE front and bastard pack rear on custom long arms
30 gal gas tank
lockers
And a bunch of other stuff
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