<VV> PG Question

[Tony]

At 1224 04/22/2004 -0600, Geoff Johnson wrote:
>Working on a PG.  Unknown year of powerglide, engine is a 110.   When 
>shifted into drive it engages really hard.  Makes a big shudder and slams 
>the car hard.  Almost feels like shifting into drive with engine revved 
>high.  Idle is at a good speed though. It only does this about 2/3 of the 
>time when shifting into gear.  Also when it does this it shudders as it is 
>shifted from drive to low.  Upshifts and downshifts just fine while running 
>down the road, shifts are very smooth.  I tested for broken e-clip 
>according to test described in Bob's book, adjusted the low band and 
>changed fluid, fluid is at correct level.   Ideas?  Surely something I am, 
>overlooking.  Is it throttle valve adjustment or something  else to look at?



Modulator valve?   


tony..