I have been trying to find which vac hose caused my poor shifting a few weeks ago. In the process I unplugged the vac line from the bottom center of the amplifier (round blue thing on drivers fenderwell?) Now both accelerating and slowing shifts are not as harsh, and no apparent flaring. Do I have a bad amplifier or a plugged line? Have only tested it for about a mile. Would a longer drive allow greater vac. loss? Any input is appreciated.

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Muleears
'07 E320 Bluetec 133K my DD
'04 Jaguar XJ8 VDP, 34K
'10 Hyundai Accent 60K Grocery Getter
'02 VW Golf soon to be on the road again
'97 E300 Diesel Son's DD
'61 VERY tolerant wife

Hampton Roads, VA USA

Gone but not forgotten:
'67 250S 95K
'86 300SDL
'87 300D Turbo, 364K! R.I.P.
'98 E300 Turbodiesel, 213K
'02 S420, 164K
'01 Prius 138K