Toyota Repair: 1994 4Runner wont stay running, vacuum hoses, toyota 4runner

Question
I have a 1994 Toyota 4Runner V6 3.0L, I have just changed out the EGR Modulator (which was broke), the BVSV behind the air intake(which was also broke), put in a new PCV Valve and new Valve Cover Gaskets because they were leaking. I also changed out most of the vacuum hoses since a lot of them were cracked or broke (i put all the vacuum hoses back in the right order from the vacuum diagram).

Prior to me doing this it ran okay and didn't really have anything major wrong with it except the idle was a little low (only about 500rpm) and when you drove it for a while and stopped it would jump idle for about 200-500rpms for a few secs and clear back up to 500rpms.

After I replaced the parts and put everything back together I noticed I had two vacuum hoses that were also attached to the Air Intake that looks like they went down to a sensor that is underneath the power steering pump on the left side but they have been broken off for a while and just hanging there. When I take the two hoses that were going to the sensor at the bottom of the power steering pump and put them together the truck will idle perfect for a little while until I put it in drive and run it for a minute or two but after that it again it will die. If I leave them off and plug the lines shut it will just die. I don't know what else to do? Any clues to what could have happened? What is the sensor under the power steering pump? Why would it idle worst after replacing the parts than it did when they were broke? I put everything back on like it was. The vacuum hoses match my vacuum diagram and everything else looks okay. Oil pressure and temperature are fine. Any clues to what might be the problem.

Answer
That sensor in the steering pump is a vacuum valve that is designed to increase rpm when turning the steering wheel, you can leave it disconnected and normally the engine rpm will go lower when turning the wheel only but otherwise idle ok. Putting the two hoses together eliminates the vacuum leak and the engine will idle normal, follow the hoses up to the metal pipes and put rubber plugs on both of the pipes, then let me know if the engine still doesn't idle.