throttle/idle problems

j0riakh1 · 05-13-2011, 05:26 PM

Well, everything on the brake booster is hooked up and checks out. so I decided to tear stuff down till I found what the nipple goes to. It goes into the upper intake manifold. I believe it's a vacuum line for the air control valve which has been all blocked off. So I plugged it back up. Im assuming that something else must have gone bad from the car
Running with a vacuum leak that large. Now I just need to find out what exactly it was. A task at which I am once more stumped lol.

Aees · 05-14-2011, 09:23 AM

Could u take another photo of the nipple? Kinda hard to see where it is.
I first thought it was the brake booster hose, but u say its not.
On the upper intake manifold there is 3 nipples on one side and i think 4? on the other side. If the nipple in your picture is the bottom nipple on the firewall side of the UIM it is supposed to go to the oil injector splitter. The splitter has 4 nipples, one for each oil injector and one big nipple going to the bottom nipple on the UIM.

j0riakh1 · 05-16-2011, 11:31 AM

that nipple is already plugged. i read online that it was to the acv, which has been blocked off as i stated. so the vacuum plug mustve come off. i think from driving the car with that plug missing, i severely flooded the engine.

05-13-2011, 05:26 PM	#1
j0riakh1 The Newbie Join Date: May 2011 Location: jacksonville, nc Posts: 11 Rep Power: 0	Well, everything on the brake booster is hooked up and checks out. so I decided to tear stuff down till I found what the nipple goes to. It goes into the upper intake manifold. I believe it's a vacuum line for the air control valve which has been all blocked off. So I plugged it back up. Im assuming that something else must have gone bad from the car Running with a vacuum leak that large. Now I just need to find out what exactly it was. A task at which I am once more stumped lol.

05-14-2011, 09:23 AM	#2
Aees The Newbie Join Date: Aug 2010 Posts: 29 Rep Power: 0	Could u take another photo of the nipple? Kinda hard to see where it is. I first thought it was the brake booster hose, but u say its not. On the upper intake manifold there is 3 nipples on one side and i think 4? on the other side. If the nipple in your picture is the bottom nipple on the firewall side of the UIM it is supposed to go to the oil injector splitter. The splitter has 4 nipples, one for each oil injector and one big nipple going to the bottom nipple on the UIM.

05-16-2011, 11:31 AM	#3
j0riakh1 The Newbie Join Date: May 2011 Location: jacksonville, nc Posts: 11 Rep Power: 0	that nipple is already plugged. i read online that it was to the acv, which has been blocked off as i stated. so the vacuum plug mustve come off. i think from driving the car with that plug missing, i severely flooded the engine.