Engine Surge When Changing Gears, '84 380SEL
 

Every time I shift out of Drive or Reverse the RPM's rise to about 1200. Stopping in neutral for a second before shifting makes the shift smoother.

which vehicle,the e320?would be TPS going bad.
other and E clean throttle
body plate,or linkages and oil

Could be the closed loop micro switch on the throttle linkage, or you have vacuum leaks. My 420sel ran a high idle until I replaced all the air hoses on the engine and the injector o-rings. Used to be 1200 in park, and a loaded up 900 in drive, now its 600 in drive, 900-950 in park.

This one....'84 380sec
http://farm3.staticflickr.com/2869/1...8f722ac3_b.jpg
Thank's for the response, when it stops raining I'll go out and "tinker". Getting good at it, found almost all of the vacuum leaks on my '85 W123 200T .
http://farm9.staticflickr.com/8113/1...192c9d7b_b.jpg

my cars no sec,but mine does the same thing the trans,and it vac related,either to much,or not enough.On My w126 300sd.By the way your SEC is nice.