Hey guys!

I had finished my Timing Belt service and decided to randomly take off the metal inter-cooler pipe (running from turbo to inter-cooler) and to my surprise drops of oil came out of it when I detached it from the I-C hose, same thing on the other side...

What's strange is that I don't seem to be burning oil as there is no white smoke coming out of my exhaust (In case that not all oils burn like that, I use Mobil 1 0W-40 Full Synth.), anyway, it appears all the oil might be caught by the inter-cooler as I only found traces at the Throttle Body... However, the weird thing is that right before I serviced the belts, my car doesn't hold throttle, for example, it all seems to start normal but when I rev up the engine it cuts off the throttle by itself and goes down to pretty much 0RPM only to catch itself and starts idling normal again... If I leave it on for more than 10 minutes or so it will start doing this again and again on its own: idle normal, die down, catch itself, idle normal, and so on, constantly.

I don't know if that is related to the oil "drowning" the engine, or something else like a vacuum leak... Either way I'm baffled and seek the advice of my fellow B5ers here... Where do you guys think the leak is from? And why is my car doing that?

I should also mention my turbo is a K03 and pretty much new, had it replaced (new) about a year ago and has no more than 15,000 miles.

Thank you so much!

 

Did you disconnect the battery when you did the belt work? It sounds like you need to do a throttle body adaptation.

I think a little oil in the IC piping is normal.

 

Yes the battery was disconnected throughout the whole process... I also had the car sitting out for almost 3 weeks before I did the belt job... When I got around (money) to doing the belts, the battery in the car was dead and this problem began happening since then.

How do I do this adaptation?

 

Oil is normal. It's blow by gases from the PCV system.

The idle is due to the throttle body alignment. It needs to be reset.

 

Thank you for the information, how do I reset my Throttle Body?

 

Several different ways, all detailed in the archives. TBA, Throttle body adaption, etc..

 

I had the same high low idle issue. I was convinced I needed a tba. I have been told you can do one by turning the key to run but not starting the car. You can hear the throttle body hum for a few seconds followed by a click. You are suppose to leave the key on for about 30 seconds from what I have heard to complete it. It did not work for me, still wouldn't idle steady, so I bought a vag com from ross tech and performed a real TBA. Still no luck however. I took the throttle body off and cleaned all the carbon out with carb cleaner and an old tooth brush and reinstalled. I also disconected the IC pipe to drain any oil since I heard it could choke my engine. I got about half of a shot glass out of my A4 with stock turbo and about 139k. Started it up and seems to be running fine now.