Sorry to bring up an old thread but I thought I would update on the issue/solution. It turned out to be the transfer case chain. I bought the replacement chain from cobra transmission for $93 shipped I believe. I also ordered a set of external spline sockets on amazon for $15 to get the bolts off the transfer case. Took me about 8 hours to get the whole job done with the help of my 13 yo brother. Hardest part was the exhaust bolts on the header which got rounded off and needed a $20 set of stripped nut sockets from harbor freight. The whole procedure was relatively straight-forward. I used this thread as a guide: http://www.xoutpost.com/bmw-sav-foru...-pictures.html
Thanks for all of the input and help!! 
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2001 4.4i E53 172k 01/01 Mfg
Mods: Led interior lights, rear footwell lights, black powder coated rims, carbon fiber wrapped interior trim, matte black ecs kidney grilles, arnott air springs(rear), rear console-quad usb chargers, K&N air filter, akebono ceramic brake pads & zimmerman rotors, black painted calipers, 5% rear window tint over factory tint, 50% front window tint, rear airbags activated, 4:3 nav head unit auxilary input, diy trans rebuild at 160k, spyder led tailights, hella horns
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02-04-2016, 11:55 PM
Linear Mode
