1989 300e (109k miles) won't start. If I pull the fuel pump relay it will start and run until it runs out of gas ( about 5-10 seconds) I then put the fuel pump relay back in, and it wont start, after a few cranks I pull the relay out and it starts again until it runs out of gas again (5-10 seconds)

Is this a bad relay? I have second one I got from a junk yard from a 300e with 150k miles and it does the exact same thing?

Any ideas?

Also, what is the other relay behind the fuel pump relay for?

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