KrazyKraut

Hello all,

I hope someone can help with a recent development on my avant. It's a 2003 1.8t with 88,8k miles on it.

The other day it started making a sewing machine like sound under the hood. It went away, then it came back - repeat that a couple times and you get to yesterday. The sewing machine ticking got VERY loud. Right before I pulled in the garage it threw a CEL (not flashing).

Pop the hood open again, take a look. It appears to be coming from a metallic can of some sort on the back side of the motor. I put a screw driver to it and definitely feel it ticking.

So, the million dollar question - what is this thing? I have added a couple pix below to show where this thing is. Again, it's the metallic can under the large black plastic can, not the black plastic one on the very top.

<img src="http://pictureposter.audiworld.com/3224/1.jpg">
<img src="http://pictureposter.audiworld.com/3224/2.jpg">
<img src="http://pictureposter.audiworld.com/3224/3.jpg">

What is it? How much do they run? Time to sell a kidney or time to dig in the couch?

Thank you for all for any help!



_

Aarononymous

combi valve for secondary air pump, what was the CEL?

Hakon

Does the sound vanish when you press gas pedal?
Sound &amp; location point to chain tensioner. Not a cheap thing.

KrazyKraut

i had to keep it around 1500 rpm to keep it from "sewing"

KrazyKraut

i have not VAG'd it yet

KrazyKraut

looks like a big deal should that fail and a bigger job then a simple swap of a part... time for a professional to go at it.

thank you!

Aarononymous

I would, since as stated that valve shouldn't make that noise.

KrazyKraut

will do - thank you

KrazyKraut

as always - AW comes through - thank you!!!

Aarononymous

bad tensioner? not to difficult but lack of oil pressure to tensioner is a concern on the 1.8t