Thud when changin gear
Hi have what seems to be the infamous thud noise when changing into 1st , 2nd and reverse. The loud thud comes from the rear of the car.
I have read many posts on forums on the internet that suggest the following:
1) Guibo, Flex Disc or Prop shaft Coupling or whatever you want to call it maybe worn, in my case it was worn, I had it replaced, still the noise persists.
2) Others have suggested to change the transmission fluid, I have done this as well and the noise is still there.
3) One of the most drastic outcomes of this maybe the fact that the rear sub frame has been ripped away from the car… I checked this, had a stealer check this and we both came to the same conclusion, nothing wrong with the sub frame.
4) I have also changed the Differential fluid.
Does anybody know what this actually could be? I have tested and checked all of obvious and now beginning to run out of ideas, I’m sure this is affecting the performance of the car.
If I hold my foot on the clutch for say 5-10 seconds before engaging the gears, all is well, no thud, this suggests to me a clutch issue, but I am no mechanic. I’m looking to the pro’s of this forum to give me some help, any help would be much appreciated.
BMW 325i SE 1991 (E36)