okay so my 98 740i was slipping in and out of gear, like what most of you have described. so i pulled the tranny out and disassembled it to find that one of the clutch plate baskets had begun to break off and fall in between the clutch plates cause the transmission to slip. so we ordered the parts and seals we needed all for about $1200 dollars. but note that my transmission was going into failsafe mode where the transmission is locked into 3rd gear that was cause by the slipping because of the weakly built clutch baskets. if any of you have questions email me at firstname.lastname@example.org
another note my grandfather owns a body show that works on bimmers so i had access to all of the specialty tools that BMW uses on their cars, so it may be harder for others to fix this issue them selves like i did
Last edited by 7seriesfixer; 02-11-2012 at 12:37 PM.
Reason: need to add some details