420A No power to the fuel pump relay

[Yaelitro]

Hi, I'm kinda new on the Mitsubishi Eclipse platform, so I don't have to much knowledge about it.

My car was fine but I had to leave it parked for a couple weeks due to Covid.
After that I started it and it cranked for a couple seconds before starting, I went to put some gas on it, after that it started right away, drove it, parked it for a couple minutes, drove it again, parked it and after that the fuel pump didn't make any sound when trying to turn it on.

Waited for a couple seconds thinking "damn, did the fuel pump really died?", Cranked it again and it started right away. Drove home but a couple hours later same thing happened, fuel pump doesn't make any sound and relay doesn't click when turning the key.
Changed the fuel pump to a used one I had laying around and nothing.

What can it be?
I'm really new to this and I don't want to have a professional look into it yet cause I wanna learn about it.

 

[steve]

Welcome to the site.

Please fill out a profile on your car to help people know about it and save asking the same questions over and over.

Depending what you have there are lots of threads here on diagnosing the fuel pump and general startup issues.

 

[BLACK'98DSM]

So the issue is intermittent. The car wouldn't run at all if there was never power to the fuel pump. Since it works sometimes and not others, I'd say there is a loose connection somewhere. Also in your title you say no power to the relay. Have you actually verified the power wires for 12v before the relay? This could be an issue with the relay itself as well. A little diagnosing needs to be done before we can make assumptions. Good luck and ask away with your questions

 

[Yaelitro]

I checked the relay alone and it does have continuity, checked also the voltage without the relay and it was 11.3
Could that be the reason why?
The battery shows 12.4-12.6

 

[AWD-Tony]

You have to diagnose when the condition is present. Leave a voltmeter on the power wire to the pump and ground the other connector. See if it’s getting battery voltage when you’re cranking. Or you can jump the trigger wired and see if the relay is putting out battery voltage/turning the pump on.