E320 1994 Wagon ASR on limp home mode

[radunegru]

E320 wagon 256k
The ASR light came on a soon as I touch the accelerator pedal.
If I restart the car it idles perfect until I put it in drive and press the gas. Actually even if is in P or N it still does it.
I manage to return home by pushing the gas harder and then released the gas pedal to let it shift. Once at 65mph I was able maintained. No cruise control though.
After 25mile run, I stop to a rest area for few minutes, and upon restarting eventing disappears and car came back to normal.
I did check the codes and got the folwing:
Built in module: codes 4, 5, 6
Pin 8: code 8
Pin 14 codes 2, 3, 14
Car drives normal now, but taking in consideration that is my daily 120mile driver and I need it in perfect shape, I don't want to take a chance.
where should I start?
Just to mention that The wiring harness was updated at 145k and the throttle actuator at 155k.
I did have ASR on for several times but the car did not go in limp mode.
Few hours before the incident I felt the ABS pump pulsating and ended up with lighting up the ASR but no limp mode.

Give me an Idea where should I start?