Hello all,

My transmission shifts pretty smooth when cold (love the feeling); but hard (slamming/thumping) once the engine's hot (or tranny fluid is hot), or under load (light hill or with passengers) - especially the 3-4 shift. I've tried to adjust the vacuum modulator CCW one slot - it helps but I don't think it's gonna cure the problem.

Could someone please help ?

Any comments are greatly appreciated!
TIA,
Frank.

P.S: It's an '86

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'86 560SEL | Silver Ext. / Blue Int. | 201K miles (Apr. 05) | 204K miles (Feb. 06)