This is a pure guess, but would definitely fit with the simptoms you describe.

Perhaps you have fallen victim to the old automatic vs. manual axle length mix up. The driver side axle is longer on a manual transmission, so if an axle from an automatic is used (maybe it was incorrectly replaced with a rebuilt one?), it introduces the possibility of the tripod bearing slipping out beyond the end of the cup during a hard turn.

This would account for a momentary loss of power as the tripod slips one or more notches, and then a bang as it violently re-engages the cup. If you think about the geometry of the inner driver, as soon as the three cylindrical rollers on the tripod bearing are pulled slightly more than half-way out of the cup (under load) - the cup will immediately push the bearing outward with considerable force. The differential would allow the inner driver cup to spin freely until the bearing re-engages. The loss of power would feel similar to when one wheel spins on ice, then suddenly regains traction.

The rubber boot on the inner driver is very flexible, so it wouldn't necesarily tear or have any outward signs of damage. The resulting damage under the boot may not even be significant, except to cause the occasional popping/binding that you describe.

I know, its kind of a way out theory, but it makes some sense too.

Good luck!

-Kyle
'91 9000T
152,000mi

posted by 169.152.25...

• OK gang, what does this sound like?, Quasi, Tue, 28 Jan 2003 13:14:00
  • Do you have TCS, does the light come on when this, adam , Wed, 29 Jan 2003 15:40:13
  • Re: what does this sound like? B caliper / pad maybe>>>, SuoTimo, Wed, 29 Jan 2003 09:48:14
    • BTW, this only is engine is not rev'ing... (n/m), SuoTimo, Wed, 29 Jan 2003 09:51:12
      • Re: BTW, this only is engine is not rev'ing... (n/m), Quasi, Wed, 29 Jan 2003 10:50:17
        • Re: How does the general movement feel like?>>>, SuoTimo, Wed, 29 Jan 2003 11:13:03
          • Re: How does the general movement feel like?>>>, Quasi, Wed, 29 Jan 2003 13:18:49
  • Tripod bearing comes out of inner driver cup? >>>, Kyle, Tue, 28 Jan 2003 19:07:43 <-- Viewing This Message
    • Very interesting theory, Quasi, Wed, 29 Jan 2003 13:08:15
      • Quasi, please see post above about axle lengths. (n/m), Kyle, Wed, 29 Jan 2003 22:31:46
      • Quasi, to remove the pass side axle->, roman, Wed, 29 Jan 2003 16:19:47
    • I thought the same Kyle, but I think the boot would+, roman, Wed, 29 Jan 2003 11:28:47
    • Remember my nightmare, Bob Davis, Wed, 29 Jan 2003 00:01:39
  • Re: OK gang, what does this sound like?, sm333ace, Tue, 28 Jan 2003 17:54:32
    • Aha! Did you tighten..., Bob Davis, Tue, 28 Jan 2003 18:28:38
      • You talkin to me?, Quasi, Wed, 29 Jan 2003 10:47:40
  • Re: OK gang, what does this sound like?, Jim Moncrief, Tue, 28 Jan 2003 16:49:51
    • Good theory, Quasi, Tue, 28 Jan 2003 16:57:49
    • OOps, that is for a classic 900. Not sure about 9000., Jim Moncrief, Tue, 28 Jan 2003 16:51:03
  • Re: OK gang, what does this sound like?, Andrew , Tue, 28 Jan 2003 16:02:54
    • WOW, what a great theory!, Quasi, Tue, 28 Jan 2003 16:42:38
      • theory!, Andrew , Tue, 28 Jan 2003 23:33:07
  • Internally, spider gears are a possibility..., SteveB, Tue, 28 Jan 2003 14:56:59
    • GOD, how I wish you hadn't said that!, Quasi, Tue, 28 Jan 2003 16:52:33
      • What's the service history on the vehicle?..., zeke, Wed, 29 Jan 2003 11:25:58
  • Re: OK gang, what does this sound like?, jim kane, Tue, 28 Jan 2003 13:22:38
    • Re: OK gang, what does this sound like?, Quasi, Tue, 28 Jan 2003 16:55:20
    • Could be wheel bearing, tie rods or steering rack n/m, Bill Cannastra, Tue, 28 Jan 2003 13:42:17
      • Re: Could be wheel bearing, tie rods or steering rack n/m, Quasi, Tue, 28 Jan 2003 17:12:12

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