Where does this hose go?

[Skiddy]

I found a hose under the bronco. pretty sure it's a vacume line. it's by the transmission, has a plastic barb connector on it. it looks to be about 1/4" maybe 5/16" hose. the modulator on the transmission is hooked up, on the transmission anyway. I have looked everywhere under there and can't seem to find where it came from.:-[

 

[Viperwolf1]

'73 and '74 C4s had 2 vacuum ports on the modulator.

 

[Skiddy]

'73 and '74 C4s had 2 vacuum ports on the modulator.

ah ha, will have to check some more tomorrow. hope to have my shop manuals in the mail soon

 

[half cab]

Prolly came loose on that last roll over

 

[Skiddy]

Prolly came loose on that last roll over

nah this one was from a big ole rock and branches, that made my muffler and driveline become too good of friends. another thing that still needs fixed%)

 

[SteveL]

My 72 has old vent lines under it from charcoal canister/smog crap I never tore out

 

[Skiddy]

well still didn't find out where it goes. I found a vacuum port on the intake that I think the other end goes to. looks like both ends have been off for a while.
another question, looks like maybe the output seal on the transmission is blowing fluid out. seems like it has just starting to do it. wasn't doing it last year, and just now started driving it. any ideas?

 

[B RON CO]

Hi, the EGR valve on the intake is missing the vacuum hose. I'm not sure where it should come from. Get a vacuum hose diagram. I would think that would set a check engine light. Good luck

 

[gr8scott]

'73 and '74 C4s had 2 vacuum ports on the modulator.

And one port goes to that EGR valve nipple, the other to manifold vacuum.

 

[Viperwolf1]

well still didn't find out where it goes. I found a vacuum port on the intake that I think the other end goes to. looks like both ends have been off for a while.
another question, looks like maybe the output seal on the transmission is blowing fluid out. seems like it has just starting to do it. wasn't doing it last year, and just now started driving it. any ideas?

Ok. It has a single port modulator and the engine isn't stock so a factory vac diagram wouldn't do you much good.

The open port on the EGR valve would go to the EGR regulator valve which may not have been added in your conversion. It would have a 2-pin connector from the harness and another vac line going to manifold vac. I see the EGR position sensor is connected so it must be a factory harness.

 

[garberz]

Just use a golf tee!

Mark