My son's 98 A4, 2.8 again. . . .
Had an overheat & noticed the electric fan wasn't working. Traced it back to the 40A fuse under the steering wheel. . . replaced fuse & it worked for a few minutes, but soon after the high speed fan kicked in, the fan growled a bit and blew another fuse.
The Bentley diagram doesn't say anything about changing it [at least that I can see. If I'm missing it just point me at it.] -- but it looks like a single screw holds the plastic housing in place, and it twists out of 3 or 4 notches. . .?? I removed the screw & tried that, but nothing is giving yet.
Am I on the right track, or does the radiator need to be pulled for this? [a radiator removal that begins with 'Remove the bumper' has held me back from jumping into that job.]
Thanks, Jim [also posting this on the audiworld.com b5 forum]