96' Jetta VR6 with evap code appearing.
 

so heres my headache..
i have a 96 jetta glx with the 2.8l vr6 engine.
my main problem is that when i am stopped in drive my car idles rough and the idle will drop periodically to around 600rpm. my whole car will vibrate for a quick minute from this.
the codes that came up for this were idle control speed, evap and a couple others.
i have replaced the whole throttle body.
now my only code left is the evap leak code.
i heard hissing coming from my gas cap and replaced the cap.
ive had several vacume lines replaced from the vw dealer. (big waste of time and money... 330$ for 3 vacume lines.... i know im a sucker)
now the only thing that i can think of is a sputtering i hear coming from around my driver side back wheel well whenever i turn the car off.
i belive this is my problem...
i used to hear it every once in a while about 3 months ago for a short second.. but now it has grown to happen evertime i shut my car off and lasts for 30sec-1min. i dont know too much about cars so im not sure what it can be... the evap canister?
pleas help with any ideas.
also i have a spectre p4 airfilter on it.
maybe it is allowing too much air in?
when i installed the old air box the check engine light turned off about 80 miles after but shortly came back on.
please help if u can.
2 months and 1000$ later this problem is still giving me a headache

just like this guy
 

https://volkswagenforum.com/forum/sh...ad.php?t=11343

whats happening to him sounds exactly whats wrong with mine.
keep in mind mine is the 2.8 engine though.

Ok, this is more detailed then your last post. You do have a vacuum leak still. I would check the evap canister, it probably needs to be replaced.

im not sure where to find that.
but something tells me its somehwere near the rear driver side wheel well.
and this is my first post :)

Check your other post for my answer.