Hi everyone-

Sorry for such a basic question, but I just wanted to double check with you all before doing something that could screw up the car .

I have been having a bit of a rough idle lately and I can swear I hear a bit of a rushing sound coming from near the brake booster. I wanted to check out the vacuum line for cracks, etc., but this is where I'm having a problem. In every other car I've played around with, it was fairly evident what the vacuum line was, and it was held onto the nipple with a regular [spring-type] hose clamp. On my 2005 S-Type it isn't as clear. What appears to be the vac line is behind and to the right of the fluid reservoir on the brake booster. Instead of a regular hose clamp, there is a 90-degree elbow that seems to rotate into place somewhat like a headlight bulb would- a quarter turn or so would allow it to pop out of place. Is this the right line that I'm looking at? Also, if this is the right line, do I have to rotate it out of place, or is it attached via some other method besides a hose clamp?

Thanks so much for any help in advance.

 

Which engine?

 

[Facepalms] Sorry about that: 3.0

 

The quite common failure is the PCV elbow. It's not that is it? If it might be, searching here should help.

 

Sounds like it is close to the brake booster, but I'm going to search and eliminate the PCV elbow first. Thanks.

 

Ok, I'm trying to look through the JTIS but can't seem to find the location of the PCV elbow. Where should I be looking? Thanks.