Greetings,
I'm hoping someone in here knows how the solenoid valve operates on my 83 240D (Automatic).
I haven't found a thread dealing with what I'm finding.
I have an 83 240D which has vacuum controlled AT ( Has no mechanical linkage to trans.).
I've recently restored vacuum to the 2-3 way valves, VCV, and modulator. It was all a mess from previous owner.
The car is shifting smooth and at appropriate shift points I believe. But there is no kick down shift at all. It used to when the vacuum was still obstructed.
So far I've checked
-The kickdown switch-- has continuity and pedal does activate it.
-The wires too the switch-- shorted when car is off. when ignition is on one lead is +12v and the other is 20 Ohms to ground.
-I can hear the solenoid clicking when I work the switch. Also checked it with a hot wire
-Removed the solenoid, tried to clean it... not sure how it works really, can't find much info.

My question is, does the clicking tell me that the solenoid is working and if so is there something else preventing it from shifting down when the switch is depressed? Could I have adjusted part of the linkage or the modulator in such a way as to prevent the kickdown? ((I believe the modulator was adjusted far CCW to smooth the shifting as when I cleared the vacuum line the car started shifting through the gears too soon and too soft, So I turned the mod. CW to tighten it up))

Or, would this indicate the "inner" part of the solenoid is bad and needs replacing.

All help appreciated!