you can remove the fuel pump relay and jump two connections with a piece of wire to check if your pump is working ok. can't remember which two connections you need to jump, other than they are roughly in the middle of each row, but you should find the numbers if you do a search.

you can drive around with the jumped connections but you should remove the wire when you leave the car, otherwise the pump stays activated and will most likely burn out.

that should help you figure out whether you have a problem with fuel delivery (fuel pump and relay) or fuel control (OVP, idle control valve)

once you know that, you can refine your search for a solution.

soemthing else that can give you some pointers is the behaviour of the car after stalling. if it starts right up, i'd look at fuel control. if you have to wait for a while before it will start again, i'd look first at fuel delivery.

good luck

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1987 300e manual 250,000 km (sold)