Ok so I have used the search function and read up on these codes, I know they indicate a lean condition but I am looking for someone who has had these same conditions that cause it and possibly any help. I get both the P1101 and P1106 codes only when I am driving up steep hills most of the time in the mountains. Every time the codes throw the engine is hot and the weather is above 80. I then have to wait overnight and reset the code the next day and it goes away. If I try to reset it right after it happens, it comes back literally 5 seconds later. The only problem is I have gone entire weekends driving the mountains without it throwing. I have nearly a full tank of gas when this happens. My dad has a 1997 Cabriolet, with the same 2.8L engine and the same thing happens to him. The first time this happened I had just gotten new 02 sensors 3 months previously. I thought they might be have been a little loose so I tightened them in their bungs but it didnt make a difference. Any insight on this subject is much appreciated, sorry for the long post but I wanted to give as much helpful information as possible.

1997 Audi A4 2.8L 12V Quattro
Completely Stock

 

just an idea maybe you maf sensor? i know troubleshooting is such a pain in the dick but im sure more people can offer more educated opinions

 

Hmmm maybe, should I just spray some carb cleaner in it? I know they are pretty fragile so taking it out is a operation

 

they make maf sensor cleaner. id use that and only that due to the oils from anything else could get on the maf element and jack it all outa shape

 

Fuel pumps hardly ever fail with these cars, but THIS might be worth a read.

My initial instinct says MAF, though. Don't use carb cleaner on it, use electronics or maf specific cleaner.