Strange annoying clutch problem, bucking w/o CDV - The BMW 5 Series (E39) Message Forum

Hey everyone,

First of all, thank you for helping me find that problem with engine failsafe prog and dropping rpms. I changed MAF / cleaned MAF connector contacts and problem partially dissapeared (for now). I say partially because car is still doing funny things but it's not giving me DSC + ENGINE FAILSAFE.

Just to remind you, it's 2002 525i, Manual 5 speed, sport package, 84000 miles.

I have this ongoing weird problem with bucking / jerking back and forth when releasing clutch 1-2, 2-3 and 4-3, 3-2 and on takeoffs.

CDV was removed few months ago and after I did clutch bleeding
pedal feel was smoother and almost scary soft but after only few weeks
it became harder and there is no free play anymore. It is sooo hard to shift smoothly at lower rpms or do engine braking when coming to the traffic light or stop.

What I experience is jerking / bucking back and forth like the whole car is connected to some big spring whenever I release the clutch. Only if I depress it slower (read: too slow) I am able make a smooth shift.

I don't know if anyone before me changed pressure plate / clutch / bearing. I hear my input shaft bearing whirring when clutch is released and when I rev the car but that shouldn't cause shifting problems. (that's another issue and no idea what to do about it)

Any ideas or similar experiences ?

Thank you in advance

Strange annoying clutch problem, bucking w/o CDV - 525i 2009-07-02 02:24:28 (133 views) (627 thread views)
- Progress? Tiredness? No V8 upgrade taunts! - JimC 2009-07-07 20:26:02 (53 views)
  - Why bother? - Mike Levy 2009-07-08 00:35:18 (46 views)
    - So it's embarrassment, not maturity or malaise! - JimC 2009-07-08 13:44:59 (33 views)
    - you've clearly never really driven a BMW V8 - Mountain ©¹²¹ 2009-07-08 01:39:48 (53 views)
      Sure have - Mike Levy 2009-07-08 07:56:44 (41 views)
      oh, sorry, I mis-read your first post - Mountain ©¹²¹ 2009-07-08 10:52:21 (35 views)
      Re: oh, sorry, I mis-read your first post - Mike Levy 2009-07-08 14:23:17 (27 views)
      ha! - Mountain ©¹²¹ 2009-07-08 15:08:33 (27 views)
- several things to consider - Mountain ©¹²¹ 2009-07-06 17:51:44 (63 views)
- Re: Strange annoying clutch problem, bucking w/o CDV - Bob 2009-07-04 10:47:12 (45 views)
- Check eng and trans mounts ... - Crusader 2009-07-04 08:45:16 (54 views)
- Does bucking occur while releasing...... - Paul S 2009-07-03 17:57:26 (60 views)
  - Re: Does bucking occur while releasing...... - ME_264 2009-07-03 19:10:37 (48 views)
    - Before replacing clutch........ - Paul S 2009-07-03 20:31:26 (68 views)
      Re: Before replacing clutch........ - 525i 2009-07-06 15:19:41 (39 views)
      It sounds like........ - Paul S 2009-07-06 19:52:09 (37 views)
      Minimal play in driveshaft ?? Shouldn't have any(m - JimLev 2009-07-06 20:15:29 (31 views)
      agreed, but - Mountain ©¹²¹ 2009-07-06 20:47:59 (33 views)
      Must be slow over in the Lounge? Token visit? (m) - JimLev 2009-07-07 17:41:20 (31 views)
      what's this "lounge" you speak of? (nt) - Mountain ©¹²¹ 2009-07-08 10:56:02 (16 views)
      The place where men are men and sheep are scared (nt) - JimLev 2009-07-08 11:59:42 (19 views)
      Re: Must be slow over in the Lounge? Token visit? (m) - 525i 2009-07-08 06:47:22 (40 views)
      there was an issue on the 2000 V8s.... - Mountain ©¹²¹ 2009-07-08 10:55:39 (24 views)
      Doesn't your car have drive by wire? (m) - JimLev 2009-07-08 07:20:34 (26 views)
      Re: Doesn't your car have drive by wire? (m) - 525i 2009-07-09 00:02:49 (21 views)
      Anyone ever replaced input shaft bearing? - 525i 2009-07-09 00:10:04 (22 views)
      I didn't replaced input shaft bearing on this (m) (url) - JimLev 2009-07-09 08:53:00 (25 views)
      Oh, I almost forgot, short shifter anyone? - 525i 2009-07-09 00:15:45 (23 views)