We have the same problem with 94 SL500 with 60K. A wiring harness was replaced and it still died. It wouldn't put off any code. Installed a new air flow sensor, but problem persists. Still no codes. Any advice appreciated. I'm brand new to this site and I'm not sure how to find all responses. I'm at FrancisDalton@aol.com and MaurAdler@aol.com

Thanks, Frank Dalton