Hello:

New to MB cars and this forum. Just accqired a 1972 350 SL I quess really an early 450 SL.

Is it normal, during engine warm up, for the engine to rhythmically surge in rpms until the engine reaches operating temp?????? Then all is well. Nice smooth idle @750 rpms

The car starts without hesitation and runs great.

I disconnect the battery when I park the car. So does the ECU need to go through a "learn porcedure" when I reconnect the battery and restart causeing the sing song in rpms ?????

Thanks in advance for learnin me