Cadillac art

Hello,
Now that i have wrapped up the timing belt/WP job, time to move on to the next project- replacing the O2 sensor. Any tips/tricks for this in an S4 - stock exhaust system? I assume the exhaust has to come down from the headers to access the O2 bung?

Thanks,
John

SeanR

I usually drop the exhaust from the headers to make ease of access better and it also gives you the chance to check the crank end play and flex plate movement at the same time. Before you drop the cats, disconnect the o2 sensor from inside first.

Mrmerlin

continuing what Sean said..............
and push the rubber grommet through the chassis,
and then feed the rest of the wires through,
so the wires dont get cut

Cadillac art

Thanks Sean and Merlin. Looking forward to getting this done.