Ignition switch replaced 86 audi 5000 s - 1986 Audi 5000 CS

SOURCE: how to audi 5000

I've had this done and did it myself more than once. The correct way, takes all day and is not easy. My bud Larry showed me a quick way, it isn't pretty but gets the job done in about an hour. Take off the pas. wiper  arm. remove the plastic cover over your climate control unit. Drivers side you need to use a snap ring pliers (90 degree works best) unplug blower, pull off washer, push the blower in with your thumb. On the other side you'll see 3 screws in a white plastic reducer up against the ccu. take them out. With an instrument of destruction Saws all, hack saw blade, hot knife, cut the black ring all the way across (end to end) curl it inside the white thing you took the screws out of. pull it up and out. This part varies, pull the blower out of the space you just made. some times it'll squese out, sometimes you need to get the IOD cut area out of ccu so blower motor will make it out unharmed. Now replace blowers brushes or put new one back in, put plastic all back the way it was adding duct tape or better to seal. Try not to use smelly stuff that never dries.. ;)

SOURCE: weird front end noise on 86 audi 5000

sounds like you may have a CV joint ready for replacement. Does it seem to get louder and/or click when you are turning?