My friend has a '94 SL500 w/ 60K miles It has a nasty habit of shutting down while driving for no apparent reason. It will run if gas is pressed real hard and will strat if put in neutral. A wiring harness has been replaced but problem stayed. Dealer said it didn't put out a code and then replaced an air flow sensor. Problem persists. Has anyone else had this problem? If so, how was it handled? FrancisDalton@aol.com