I had my e53 in the DIY shop last week and a mechanic there who used to work for the BMW plant in Spartanburg was looking things over and pointed out a few things. He pointed out that whoever installed my fan shroud didn't connect it properly on the bottom, and it had rubbed against a pulley, which cut a hole in it. I bought this in July and had never noticed it. As far as I know, the fan still works, but I guess I need to check that somehow (since we now have winter temps, not sure if it will kick on if I turn on the A/C).
I've seen some DIY's on replacing the whole auxiliary fan assembly, but is there any way to replace the shroud without removing the fan? I went ahead and ordered the shroud the other day, but I'm not sure if I want to tackle this job myself. Depends on how much has to come off and what tools are required.
The previous owner had the whole fan assembly replaced on 9/30/14 by Warren's Imports in Lawton, OK. Then, on 4/27/15, Import Specialists in Indianapolis replaced the water pump and thermostat. I'm guessing the fan shroud would have been removed to do that job, so I figure that is when it wasn't installed properly. That was a little over 8 months ago, but I see on their invoice that parts and labor have a one year or 12,000 mile warranty. Would that warranty transfer to me? I bought it in a private sale, so I could ask the previous owner to contact them if necessary. At the same time, he had them replace the entire headlight assembly on the driver's side, so there was a hefty bill ($4K).
Here is the damage: