Where does vacuum line for 1984 911 start in engine compartment?

[84Targa]

We had the engine out of my car recently. Since putting it back in, I have experienced “excessive braking effort” (wording from Bentley manual) to slow the car down and it doesn’t slow nearly as well as it did. Per the Bentley manual, I pumped the brake pedal 10 times with the engine off. While holding the pedal down I started the engine. The pedal DID NOT fall slightly. I have had this car for many years and I am used to the feel of the pedal falling when I start the car. It does NOT feel like it used to. It doesn’t feel like it falls at all. (I have bled the brakes, used brake kleen to clean the rotors, and done a number of hard stops to heat up and clean the pads, so don’t think the issue is there.)

I followed the rest of the steps in 400-12 and 470 in the Bentley manual. Part of my problem is I wasn’t the lead person on the engine drop and I didn’t follow every step of disconnecting and connecting lines when the engine went out and back in. I don’t know where the vacuum line for the brake booster comes from in the engine compartment – which I am assuming it does. Can anybody either tell me where to look in the Bentley manual for a diagram that shows the path of the vacuum line from wherever it starts? I know where it ends in the luggage compartment (470-8). I am been through manual and I can’t find where it starts.

Any help will be appreciated. Thank you.

[ChrisBennet]

Looking into the engine compartment, it is deep in the engine compartment on the left side, If you have cruise control, there will be a white "T" connector with a line going to the cruise control, the other ends of the "T" connect the engine side vacuum hose to the car side vacuum hose.

I don't have a 3.2 around at the moment or I'd snap a picture for you.
-Chris

[84Targa]

But I can't find where the other end goes. I thought it would be easy to figure out, but even with a mirror on an extension, I can't find where it goes. Thanks.

[Hugh R]

If you reach your left hand around behind the bottom of the three plug electrical connector you can feel the fitting and then connect it with your right hand. If you bend your left hand at the wrist behind the 3 plugs, at the bottom you'll feel it. Good luck

[84Targa]

I think I found it. I think it goes to the smaller of the two vacuum line fitting at the top of the Cruise module. The "T" connector is oriented that way and the line is exactly the right length. I'll go for a test drive ASAP and see if I now have better braking. I turned the engine on after making the connection and the pedal dropped so I am optimistic.

Thanks.

[Hugh R]

Good luck, I don't have cruise control.