jandsbulldogs

OK, i will go after the o2 and see what i come up with after that. bank 1 sensor 1...is that on drivers side?

clancy

passenger side for US.

jandsbulldogs

CAME FROM CANADA...HAS METRIC CLUSTER INSIDE AND EVERYTHING....STILL PASSENGER SIDE? AND ITS PRE-CAT RIGHT?

clancy

Yes, not that difficult to replace. Just takes a little patience and disassembly. There are several write ups on oxygen sensor replacement just do a search you'll find lots to pick from.

4Driver4

I'd like to help. But this thread is unintelligible.
Please use quote and reply so that those of us in threaded mode have half a prayer of figuring out what is going on. Thanks.

jandsbulldogs

sorry i wasnt in threaded mode...was looking at it in linear

jandsbulldogs

OK so i changed o2 sensor, got rid of the o2 code, but not the miss....not cool!

Gsrob

Bummer, I'd start checking for vacuum leaks then. Do you have vagcom? Are you certain that cylinder 5 is the consistent culprit with an additional random misfire on other cylinders? I am currently hunting a vacuum leak down from somewhere in the engine bay. Slight squeaking sound under full throttle/boost and the only code I have is random misfire. Sorry that the o2 fix didn't solve the issue. Keep looking!

vtraudt

Your 'squeaking' sound caught my attention. Currently chasing the cause on my 2002 A6 2.7T.

I called it a 'mooing' sound. Occurs when boost is building (I have larger turbos, etc.).

I got rid of a similar sound on B6 A4 1.8T with APR R1 (bladder type) DV by changing the orientation of the DV. After that success, I did the same on the 2.7T (Forge=piston DV), but no change.

Today, I have a 'smoker' here to see if I am dealing with a boost or vac leak.

OP: Misfires: if swapping plugs and coils does not move the misfires: try swapping injectors.

SloopJohnB@mac.com

Unless Canada has a left-side driving enclave for Brit expats, Canadian-spec cars are Left hand drive, same as US cars.