Friends, I'm replacing the coolant outlet pipe on my 2009 XF 4.2 NA. There are vacuum lines coming off back of throttle body that appear to run thusly...one to a black cannister mounted by the fuse box, and another to the fuel sensor that also tees off to another location not yet found. These lines are tiny plastic lines that are as brittle as uncooked spaghetti and yes, I have snapped one off. The fitting to the back of throttle body is to a boot with both lines. There is a part # tag on the line but it does not correlate with a vacuum line per internet searches. On one side, the tag says 8X23-9S442-AC and on the other side it says S3JJA. So.....what are these lines? What are they for.....Where do I get them? Will the car run without them( dumb question I know)?

 

??? Google search is your friend, use that number to search, you can get from various sources, some on eBay right now...

 

They will affect your fuel trims...I replaced mine quite a while back...very brittle breathe on them hard and they break...

 

I've already fixed the car. Coolant leak done, vacuum line done. I know about google, but the exact vacuum line part description is conflicting with numerous others....Forget it, went to Napa, bought $2. worth of rubber hose and made a sleeve over the two ends. Voila.

 

black canister line is SAI