"Sudden Death"

[autori]

I drive a 4 cylinder 230E with W124 engine (1992 model). Just last week, the engine suddenly died on me while on the road - no jittery movements, no prior indication - the engine just died! I pull to one side, off the ignition, on it again and it started without problem. The car then behave normally. Then today, it happen again; engine suddenly died, I start again, and off the car goes. I got a feeling this kind of problem will be very difficult to trace. I am willing to do a top overhaul (if it will help) instead of sending it to the workshop and having them trying to disgonise the problem by changing this and that. Any comments from the experts out there? By the way, I am from Malaysia and as a last resort, am turning to this column for help. Thanks!