1991 300SL Injection Codes

[sldan]

I am interested in reading the error codes on the injection system in order to troubleshoot the cold starting and warm up drivability problem I am having.

Probelm:

Intermittently, 2 out of 10 cold starts, the engine will go to 1100 rpm then drop to right to 700 rpm and stumble.

At times, when the above happens, the car can be driven with some nursing along and starting out on 1st gear until full temp is reached then it run great. At other times, like this morning, I had to sit and let the engine go to full warm to even move the car forward.

Any suggestions?

Dan