1991 500 sl after warm up when the car hits a bump it will shut off. only after complete cool down will it start back up. I tried putting fuel in the throttle body, did not help. I am thinking a relay prolbem because it is resetting it'self after complete cool down. where can I find info in the relays for this model?

SOURCE: engine shut down after 15miles then won't start for half hour

Check the ignition coil, olso what year is the car

SOURCE: 1991 mercedes sl 300 will not start, not getting fuel.

check inside of the trunk lid on driver side quarter panel or inside driver door

SOURCE: car wont start

Hi,
Fuel filter is under the car under a cover near the petrol tank,if you are a competent mechanic I will tell you how to test the fuel system otherwise take to a Bosch fuel injection specialist as these are a nightmare to test let me know as will take ages to type answer.
Darren.

SOURCE: Runs for 20 minutes, gets hot and shuts down. Still has spark

I had the same problem, took to a benz dealer, it was the fuel pump relay, cost for repair $200.

SOURCE: how to test fuel pump relay on a 93 mercedes 190e

there are 2 fuel pump relays on the mercedes so it is unlikly that they have both gone on it....check your over voltage relaytell me what happens
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