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Here's a pic. I was wondering what the cylinderical black thing is next to the overflow tank. It has three small hoses going to it, all of which are cracked at the connection. Thanks!

 

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not cruise control, but that controls the vacuums that set the different vent settings in the cabin, or turns the heater system on or off. one of those lines goes to the back corner of your intake manifold (theres a junction, one goes to the CC, the other goes the that cylinder thing. then, from that cylinder thing, one line goes to the heater control valve, and the other goes through the firewall and connects to a series of pressurized valves that control which vents air comes out of. thats why when you slide change the vent settings with the car off you hear that hissing noise.
 
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