I think this is a vacuum valve, but I need the part number if anyone can help. I'll post the pics of the location, its above the air filter.

It's a 99 A4 Quattro Turbo 1.8

Thanks

(my hand isn't casper white, I added brightness to the picture)

[IMG]local://upfiles/37811/C50AF70CE1D64F34AC7F2D7244E58729.jpg[/IMG]

 

now picture of location, above air filter

[IMG]local://upfiles/37811/33084E1AB05B4B09A7A2E367233352C7.jpg[/IMG]

 

Your pointing to the location of the N80 Valve for the evap system. Did that check valve have a cover over it?

 

yeah there was a cover, but this thing looks like it melted

i found the part number, the 058 valve, do you know of any good places to buy them?

 

Why are you replacing it? Is it leaking? Actually i have an idea if its the N80 valve and you dis-connect the lines going to it you won't hear anything, if its a vaccum check valve and you dis-connect the lines you'll hear a vaccum leak. If its a vaccum leak you can use any part number for replacing the check valve, they are all the same. One way in, one way out.

 

the whole valve is compromised,it looks melted and you can see the red rubber valve stop

 

I saw this today when my car started idling super rough and the check engine light came on, so I'm hoping this is the cause

 

Then you should hear a vaccum leak, if nothing its the N80 valve like i said. You have to go to the dealer for this part as far as i know. Not that expensive.

 

thanks for your help, i hope this is causing my problem, this thing looks like its been through war

 

What kind of problem are you experiencing?