Originally Posted by curtludwig

Manual trans? I just went through this on my 240D...
Pop each socket off its associated ball and use a Qtip loaded with ATF to lube it. Take a GOOD hard look at the socket and make sure theres no serious wear there. One of mine let go on the highway (look Ma, no throttle!).
Mine would get sticky after a longish highway drive, turns out there is a shock absorber of sorts in there which slows the throttles return to prevent bucking while you drive (especially important when driving in heavy traffic) and mine was getting sticky.
The shock is fairly expensive (~$60) but worth having. I've been driving without one for a month now and while its not all that bad its not something I'd really advise doing...