Hi my e320 stalls when hot

I am getting the following codes from the led:

3- o2 sensor this has been around a couple of stalls
5 - exhaust recurulation thingy, I unplugged it
6 - idle speed control, which I understand is built into a 1995 in the throttle actuator
8 - coolant sensor which I unplugged previously

Kind of dismissing 5 and 8 cause I screwed around with the sensors, when the car was stalled

Wondering if I should replace the o2 sensor or focus on the throttle actuator, checked wiring to throttle actuator, looks good no deterioration on the test area.

Engine wiring harness has been done already, fuel relay, fuel filter, cleaned maf and attempted to clean the throttle as well.

The car drives good cold but once warmed up will surge and eventually usually after 20-30 minutes of driving stall, will then restart once cold sometimes before.