When cold overnight my 92 Merc. 300SL starts but after driving for a few minutes it stalls. It then will restart and run fine for the rest of the day. I have had new fuel pumps installed, a recent tune up and many parts replaced e.g. Overload sensor, wiring harness, etc. Any suggestions? Thanks... Dave

What do you mean stalls? Im asking that because some cars that have a automatic transmission have a "overdrive" function. Its not a real gear overdrive its done with fluid. It causes the transmission to lock up. What happens is when you pull to a stop the tranmission is still in gear rather then dumping and it causes the car to stall. It can feel like a fuel problem but it isn't.

Replace the Ignition Control Module (ICM) and coil.

Replace the Ignition Control Module (ICM) and coil.

What leads you to believe that it is the ICM when the car runs all day ?