84 500SEL Idle Revs bet. D & R or N
 

My 84 500 SEL idles a bit too high, about 800 in D, but the problem is greater when shifting between D&R or R&D or into N it revs up to 1200 - 1500 and makes for a very jerky transition!

I have replaced the OVP (or OVR as some call it), the Idle control valve, O2 sensor, Injectors along with holders and boots, wires, plugs, distributor, rotor.

Thanks!

throttle switch (please use search mode)