Well before I start to tear into anything and order parts I thought I would get another opinion. 2001.5 A4 1.8T quattro manual. Driving home from work and it started missing when I get into the boost at all. Anything over 3lbs and it misses. Engine light came on and was flashing. Parked it, scanned it and this is what I came up with

VCDS-Lite Windows Based VAG/VAS Emulator Version: Release 1.2 Ross-Tech: Home
Workshop Code: 000 65535
Diagnostic Trouble Code Report Monday, 08 April 2013, 15:23:22.
VIN Number: License Plate: Mileage: Repair Order:
Control Module Part Number: 4B0 906 018 CH Component and/or Version: 1.8L R4/5VT G 0002 Software Coding: 16701 Work Shop Code: WSC 63351 7 Faults Found:
18010 - Power Supply Terminal 30: Voltage too Low P1602 - 35-10 - - - Intermittent
17704 - Shareware Version. To Decode all DTCs P1296 - 35-10 - Please Register/Activate - Intermittent
16795 - Shareware Version. To Decode all DTCs P0411 - 35-00 - Please Register/Activate
16804 - Catalyst System; Bank 1: Efficiency Below Threshold P0420 - 35-10 - - - Intermittent
16395 - Shareware Version. To Decode all DTCs P0011 - 35-10 - Please Register/Activate - Intermittent
16684 - Shareware Version. To Decode all DTCs P0300 - 35-00 - Please Register/Activate
Readiness: 0000 0000

Im thinking that it is the cam tensioner is going and it slipped a tooth but again I wanted a second opinion before I tear into it. Luckily I have a second car to drive for the time being

 

swap coil pack and spark lug from number 3 hole to number 1 hole and see if the misfire follows

 

Sorry, should have specified. That was from a couple weeks ago that I forgot to erase. I already replaced the #3 coil and it was fine until yesterday.

 

dont worry about your cam tensioner. hows your voltage? running, off, and key on?

 

The voltage is fine across the board. The reason I am thinking it was a tensioner is because of the P0011 and P0300 codes.

 

go ahead and check it out but i highly doubt the chain skipped. its mor likely the belt skipped, but if it did it is very unlikely to be running at all as it wouldve kept skipping eventually

 

When was thelast time you replaced spark plugs?

 

I replaced the plugs not long ago, same time that I replaced the bad coil. As of right now it seems to run perfectly fine at idle and in vacuum. If I get into the boost at all it will misfire like crazy. I am also getting a slight ticking out of the top end (again maybe tensioner)