I have a 2008 fx2 4.6 and I'm trying to figure out where this vacuum line goes to, the shop that recently had it claimed it wasn't plugged in, so they just "plugged it off," which I think is complete bull ****. I have looked for different diagrams online and found nothing, can anyone take the time to snap a picture of what it plugs to because I can't find it and am at a loss.

Thank you in advance,
Jake

 

You are 2WD, that is for the 4WD system and should be plugged off...

 

Ah, well thank you for that. It must've been tucked well, because I've never noticed it before. They took it from me, fixed the starting issue and claimed that it was running good now, but it is sputtering hard when it gets up to around 60mph. The rpms will shoot up when I step on the gas, but there will be no power so in just trying to figure out what the problems could be.

 

I just asked this question the other day. Noticed it when swapping my plugs out (got all 8, unbroken! WOOHOO!) I wish Ford had done a better job labeling that, so people know what this random line, flopping around their engine bay is.