Hey everyone, new member looking for help. I changed my spark plugs on my 03 1500 with the 4.7, which wasn't terrible except for the back plugs but I managed. Now I'm sure I'm not the first knuckle head to break a couple things while doing so and I'm also sure the components broke are common also. One part I've already identified as the pcv valve and have replaced it with a new one from the parts store, along with the length of tubing connecting it with high quality, tight fitting tubing since it was cracked as well. The part I'm trying to identify is a harder rubber/plastic tube that seems to T off of the brake booster. I snapped that one too =/
my issue is it runs and drives great with the pcv unplugged but since it's hooked up it stalls, idles rough, and dies completely when I put it into reverse or drive. I got some vacuum hose from the hardware store and married them together and it seemed to run better but not great. Put a little piece of duct tape at the end of the tubes hoping maybe it wasn't connected or pulling a full vacuum and now it runs fine, goes into gear ....kinda fine, and doesn't die so I'm really hoping replacing this tube altogether will completely fix my problem. If there are any other common items that could cause this I'm open to suggestions also, but I'd like to start at replacing this length of hose/tubing and also would like to know wth it even does, where the other end goes, and why it would cause this issue? Any help would be appreciated as what should have been a ten minute job (replacing pcv, fixing a tube) has now taken me all day and it's still rough. I'll attach a pic of what tube I need. Thanks to anyone who took the time to read and help! Oh also the duct tape fix was done day of, it now has the tubing described above.

 

I think those two lines go to the throttle body and cruise control servo.
That tape job isn't going to hold vacuum. You can either get new lines, or, get a vacuum hose connector kit.

 

The tape job isn't what it looks like now. I got a length of vacuum tube from the hardware store and inserted both ends into it. I'd rather just replace the whole tube if it has a specific name and if I knew where it went. It's a hard tube so I don't think a repair kit would fit inside the hose without damaging it

 

You already did the 'repair kit'. So long as there aren't any leaks on the repair, leave it. The plastic lines get brittle with age, and essentially disintegrate. Just using some rubber line, as you did, is the most common fix out there.

 

QUOTE
I've got the smallest hose I can find that will fit, even wrapped a bit of tape at the broken ends to make them a little thicker, and now I've gone so far as to pull the sleeve back a little and put a smidge of super glue and slide it back up. While driving today my truck still dropped rpms and flashed a check gauges light because of low oil pressure. Granted this only happened once in my 25 min commute instead of Everytime I stop, but it still happened and I'm thinking I would rather just replace the whole line. If it's not an identifiable part I can buy new maybe I can just find one at the junkyard but I'd rather buy new if anyone knows what it's called.

 

Its just plastic vacuum line. Comes in a variety of colors. Has nothing to do with your oil pressure. That is a separate issue. (likely the sending unit.)