Vacuum hose length needed?
 

Dont anyone dare tell me to do a search, because I have been looking through old threads for nearly 2 hours trying to find the answer to my question. I found part of my answer, but I need to know the rest. First of all, my idle is really low, and when I shift from park to drive, the RPM's dip almost down to nothing, and then go back up to around 500. The same thing happens when I brake, the RPM's dip, and then go back to 500. I'm thinking this could mean a loss of vacuum. Also, I have been getting a code 34, which is the EGR solenoid valve. I have heard it can throw this code when vacuum hoses are loose or leaking, so I am getting ready to remove the intake mainifold, and replace all of the vacuum hoses, and clean or replace the EGR valve. I have found through searching that instead of using stock subaru hoses, I can use 1/8'' viton hose, which has a higher heat rating. So if I need to order a length of this hose, how long does it need to be, and where can I order it from?

My second question is, I have found through searching that the idle from the factory is 600 RPM's, but what I havent found specified is, is that while the car is in park, or is that while it is in drive but stoppped with your foot on the brake?

P.S.: Also, as long as the intake is off, is there anything else that I will need/want to replace as long as I am under there?

I would change out both knock sensors, the pcv valve and maybe even the spark plugs. They would be much easier to get to with the intake manifold removed.

I have a repository of info in my locker on the vacuum tubing and intake manifold is in my locker:

http://www.subaru-svx.net/photos/use...toloczko|29122

See the tubing pdf file for all hoses that you'll need. There is also a how-to for r&r'ing the intake manifold and hoses. I have some recommendations in the how-to on what else to replace besides hoses.

I used to know what the idle speeds were supposed to be. I know that 600 rpm is the idle speed with the car in Neutral or Park with the climate control disabled. Either turning on the climate control or putting the car into Drive causes the idle to increase to 800 rpm. I can't remember though which one it is.

The info in your locker is very very useful. Thanks. However, you say putting it in drive increases the idle? I know in mine, putting it in drive drops the idle, and the same thing goes for the Ford F-250 superduty that I drive for work, and im pretty sure that it is the same thing in most cars or trucks that Ive driven. Anyways, I have already replaced both of my knock sensors, and it wasnt a big thing with the manifold still attached. I will however do the PCV valve while im in there. I had no idea it was going to cost me this much though. I am planning on doing this soon, like sometime when I have a few days off from work, and so that way if I screw something up, I will have some time to try and fix it.