I have been chasing what I thought was a fuel starvation problem. Fuel tank recoated, fuel pump exchanged with a non Mercedes pump (before me), filters and spark plugs changed, cleaned CSV, over spill radiator tank refurbished, fuel hoses exchanged.
After driving for about 20 minutes, particularly on a Texas hill (not big), it will stall out and then the little red light will flash on. After it rest for a minute it will start back up. What could this be? Any guesses? I also drove around without the fuel cap on to see if they made a difference, it did not. Thanks in advance for all guesses!