pastfast125

Hey, I'm pretty sure this is vacuum. On the passenger side firewall, theres a lil black plastic thing, and it has a small hose coming out that side that goes to the drivers side firewall where theres a thing with like 4 fittings on it. One is plugged, one has a hose that goes to the intake, and I forget the last one. ANyways back to the passenger side. So theres the small hose out the side, then theres 2 fittings on the bottem side of this, on is a tiny hose that goes into the firewall, the other fitting theres nothing there. Did I just forget to hook one back up or something? Where do they go to?

pastfast125

yea I found an old pic, I did forget to hook one back up. One goes into the firewal, then one dissapears somewhere in the passenger side fender, but I cant find it anywhere, what does it go to?

MikeVa

One is for main vacuum supply(intake hose), another goes to the brake booster, one is for cruise control(if you don't have cruise, plug it), one is for the A/C controls(this one runs to the passenger side firewall).

This should be the A/C vacuum line.

Texas5.0

Those lines are on the drivers side.... he is asking about the passenger side right?

pastfast125

right

MikeVa

The vacuum lines on the passenger side deal with the A/C system. One line should go thru the firewall. There are also lines that run from the EGR to an actuator near the fenderwell.

Texas5.0

Check out this thread and see ifit helps... I had the same problem.

https://mustangforums.com/m_3532297/tm.htm

pastfast125

Where's the left one go? It's not connected anymore and nowhere to be found.

MikeVa

That one goes thru the fender on the passenger side. Probably ends up to an actuator under the dash.

ALMOST STOCK

It goes into the passenger-side fender wellas MikeVa stated, and then hooks up to the Vacuum Reserve.