I'm working on a 2001 a6 2.8l. Long story short somebody replaced the motor an ND didn't label anything, now I'm stuck puting everything back together. I'm getting close to being done but I'm hitting a couple roadblock with a couple connecters and a vacuum/coolant/egr line.
The first connecter is near the fire wall slightly on the driver side. It's 3 pins and the connecter is purple
the second one is odd looking, I'll let the picture do the explaining https://docs.google.com/file/d/0ByIV...p=docslist_api
and the final one. Like I said I'm not sure if it's vacuum, egr. Etc but it's directly below the throttle body on the back of the intake manifold https://docs.google.com/file/d/0ByIV...p=docslist_api
any help to you all could give would be greatly apriciated, I just want this car done and gone!

 

The first picture looks similar to the rear temperature sensor that is in the coolant cross over pipe between the two cylinder heads. It's buried pretty far down there.

In the second picture, that "weird" looking connector is the ambient temp sensor that goes in front of the AC condenser. There's a mount that it sits in that may or may not be present.

I'm not quite sure about the last one. The picture doesn't do it justice.

 

Thanks I actually figured the last one out. It was for an egr line. For the ambient temp sensor, it just sits in a bracket? It doesn't actually plug into anything?