Round emissions "ball" on the firewall above the AC Box...has two places for two vacuum hoses...one small diameter the other larger.
Anybody know where these lines go to?
Anybody know where these lines go to?
CK5
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Firewall emissions canister
- Thread starter Chief Brody
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horny for picture
and your truck is pretty old, how do you know it's emissions related? One nipple could be for the AC system. Cruise Control is ran off vacuum annnnnnnnnnd all the emissions stuff too
and your truck is pretty old, how do you know it's emissions related? One nipple could be for the AC system. Cruise Control is ran off vacuum annnnnnnnnnd all the emissions stuff too
horny for picture
and your truck is pretty old, how do you know it's emissions related? One nipple could be for the AC system. Cruise Control is ran off vacuum annnnnnnnnnd all the emissions stuff too
it aint cruise control...wasn't even an option on a 1974...
It's a little vacuum "tank". It's a reserve so vacuum operated stuff doesn't fluctuate when the vacuum your engine is producing fluctuates with rpm range. Not sure what needs vacuum on your truck but that's what it is.
Mine was in a different location but same purpose.
Mine was in a different location but same purpose.
British Slave
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It's to keep your AC and heater doors from closing during acceleration and low vacuum periods.
badmix
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So....one end has to attach to the manifold vacuum....where does the other end go to?
British Slave
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To your AC/heater control. Usually goes thru the firewall just to the right side of the "box".
ok...thanks...I will dig in the dash in a little and see...I am betting that hose was not connected when I got it, because I do not remember pulling any vacuum line through the firewall
British Slave
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There may be a bundle of vacuum lines that plug onto the control. One for source and the rest go to different doors.
Winner !!!
Those things got numerous in the 70's for some vehicles. Mother had a big T-bird that had two or three black one pound coffee cans under the hood.
One of them developed a leak where the clamp was attached.
The car had a very complicated climate control system that was all vacuum controlled.
When that can quit holding vacuum, you could be driving along with the AC running on a 90+ day, punch the accelerator, and it would shift to full heat with full fan!!
That got old quick......
Ahhhhhhhh! Figured it out....there was this "wire" coming out the firewall that I couldn't figure out where it went...
Thei "wire" had a butt connector on the end where another "wire" had been attached....or so I thought....I looked at it several times and thought the same thing..."where the heck does this wire go"....
Then, one time today I looked closely at the "butt connector"...it wasn't a butt connector...it was tube...a vacuum line....it went into the round vacuum canister...
Thei "wire" had a butt connector on the end where another "wire" had been attached....or so I thought....I looked at it several times and thought the same thing..."where the heck does this wire go"....
Then, one time today I looked closely at the "butt connector"...it wasn't a butt connector...it was tube...a vacuum line....it went into the round vacuum canister...
British Slave
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horny for picture
and your truck is pretty old, how do you know it's emissions related? One nipple could be for the AC system. Cruise Control is ran off vacuum annnnnnnnnnd all the emissions stuff too
Ahhhhhhhh! Figured it out....there was this "wire" coming out the firewall that I couldn't figure out where it went...
Thei "wire" had a butt connector on the end where another "wire" had been attached....or so I thought....I looked at it several times and thought the same thing..."where the heck does this wire go"....
Then, one time today I looked closely at the "butt connector"...it wasn't a butt connector...it was tube...a vacuum line....it went into the round vacuum canister...
*clears throat*
I think I should get a prize or maybe bronze medal at the least.
that "wire" runs the actuator doors
