Possible Problems - BMW Forum

BMW 540i.ce · 08-22-2009, 12:21 PM

I am new to the Forum and also new to owning a BMW. just bought it for my birthday, a 2000 BMW 540i with the sports package. owner also stated the it had the first stage DiNAN performance mod. not sure about all of this but love it. But when driving and it gets to about 40mph when it shifts, it shifts real hard. enough that the rear end almost feels like it "clunks" into action. but then it takes off like a champ. can anyone tell me what might be causing this please?

318kid · 08-23-2009, 03:26 AM

not a pro. but could be gear slipping when it tries to shift. my cousin recently bought a 96 camaro, the gears were wore out so the car didnt have 3 or 4th gear. and second was worn so it shifted hard. i dont know tho because we never experienced the clunk. do you have the clunk when you pop it into reverse and drive?

BMW 540i.ce · 08-23-2009, 09:00 AM

Thanks for the reply kid, but nope... no problem with reverse or any of that. I have read some of those issues before. it just happens coming out of maybe second or third when I am driving "moderately". It doesnt seem to do it as much if I drive with my foot barely on the pedal, much like grandma...

darkhorse737 · 08-23-2009, 11:17 AM

place it on a lift and check the GUIBO, the center supprt bearing, and the axles and joints.

** If you have no service history or records of tranny & differential service, now will be a good time change tranny and diff oil & tranny filter. The servicing will allow you to inspect the oil and check for metal ...(if any)

Good Luck