I have a 1994 E320 with M104 engine (non ASR) at ~160k miles. When I purchased the car the previous owner told me the cruise control actuator was bad so I have not tried to use the cruise. The car seems to run fine but has a slight hesitation when accelerating (forward or reverse) from a stop. The CE light is on. I made a code reader from the diagram posted on this forum and pulled the codes, they are:
Pin 3:
code 3
Idle speed control faulty

Pin 8:
code 8
Idle speed control (ISC) system at upper or lower control stop or CC or EA
indicates "limp home" mode.

Pin 14:
Code 2
EA/CC/ISC control module (N4/1) or Safety contact switch (M16/1s1) or Stop lamp switch or Cruise control switch or Actual value potentiometer or Starter lock-out/back-up lamp switch or engine speed signal or vehicle speed signal or closed throttle position switch or safety relay in EA/CC/ISC control module
Code 11
Closed throttle recognition signal to engine control module (HFM-SFI or Left LH-SFI) Fuel safety shut-off to engine control module (HFM-SFI or left or right LH-SFI)

(Please note that I used the code definitions from a post on this forum but they differ from those in the CS-1000 scanner pdf. In particular for pin 14).

I am not sure what to do at this point. I tried to search for ISC but did not find something specific. I hope there is something I can check to make certain my throttle actuator is where the problem is before spending $500 on a rebuilt one at "4mercedes.com"

Can anyone help interpret these codes?

Thanks,
Jim