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Message: <blockquote data-quote="astroboy" data-source="post: 381075" data-attributes="member: 4527">Bimmer AT trany has 2 sets of pressure actuators, one for high pressure and one for low pressure. Low pressure actuator is activated during gear shift allowing clutch packs to slip to remove the shift bumps/jerks. High pressure actuator is only activated when gear shift has been secured and stopping the clutch pack from slipping. That's why bimmer auto trany when shifting is so smooth because the clutch packs are allowed to slip, and this action will worn the clutch packs a lot faster than a conventional auto trany. Part of the notorious high wear & tear of bimmer parts, all in the name of smooth driving and passenger comfort.Sounds like your low pressure actuator is not working for whatever the reason, electronically or mechanically, no slipping of clutch packs during shift and created the hesitation of shift, high pressure actuator running full time. Jerks are more obvious during downshift. Pickup and upshift must be damn power because no slipping of clutch.. <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite8" alt=":D" title="Big Grin    :D" loading="lazy" data-shortname=":D" /> <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite8" alt=":D" title="Big Grin    :D" loading="lazy" data-shortname=":D" /></blockquote>

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