96 eclipse electrical diagram for getting dc

google 2000 Mitsubishi eclipse fuel pump relay location
for more info

https://www.fixya.com/cars/t3177909-fuel_pump_relay_located_2000

What make , model an year vehicle ? The fuel pump could be getting a worn spot on the commutator , know anything about electric motors . Have you tried hitting on the bottom of the fuel tank when it won't start ? Sometimes doing this will get it working . DC Motor How it works

Testing Electric Fuel Pump Problems with Voltage Drop Test

The fuel pump is located in the pump assembly module inside the fuel tank. There are plenty of photos of the pump and the entire assemby on line(such as parts stores) if you care to look them up.
The pump assembly module is accessed from the top of the fuel tank. In earlier models of your car you could access this by removing a plate on the rear floor of the car above the tank.. I am not sure if you can on your later model as in many vehicles you need to remove the fuel tank from the car to access the fuel pump assembly.

I am not sure what the person who referred you to a "fuel pump cap" really means. Perhaps you could get that person to explain what he meant. Possibly he actually meant the fuel cap on the fuel filler tube.

Test the electrical circuit ,voltage drop ! Do you know how do to automotive electrical testing using a DMM - digital multi-meter ? Looking at a wiring diagram so you know what wire's are what ?
Free wiring diagram's here http://www.bbbind.com/free_tsb.html
Enter vehicle info. year , make , model an engine size . Under system click on engine , then under subsystem click on fuel controls . Click the search button then click the blue link .


Testing Electric Fuel Pump Problems with Voltage Drop Test

How to Test for Fuel Pump Voltage Drop

Trouble Shooting Fuel Pumps Voltage Drop Test Part 2 Expanded In Depth

Fuel Pump Electrical Circuits Description and Operation

http://www.bbbind.com/free_tsb.html free wiring diagrams ! Enter vehicle info. year , make , model an engine size . Under system click on engine ,then under subsystem click on fuel controls . Then click the search button , then click blue link .The 7th diagram down shows two fuel pump relays , This I have not seen before ! One is speed cont. relay an the other is just fuel pump relay ? The speed control one has a resistor in the electrical circuit . That is way your droping voltage .
Fuel Pump Electrical Circuit Diagnosis (VIN K)
Fuel Pump Electrical Circuit Diagnosis (VIN 1)

The PCM alters fuel pump speed by energizing the fuel pump speed control relay. Under normal conditions, the fuel pump speed control relay is energized. The applied voltage to the fuel pump is controlled by a resistor assembly. When higher fuel volume is required due to increased engine load, MAP sensor value over 90 kPa the PCM de-energizes the fuel pump speed control relay circuit. The increased voltage to the in-tank fuel pump allows a higher volume of fuel to be delivered to the fuel rail. The PCM also compensates for low system voltage by energizing the fuel pump speed control relay.

Have it check for codes !
Did DTC P0230 or DTC 1260 set?
--
Go to DTC P0230 Fuel Pump Relay Control Circuit or DTC P1260 Fuel Pump Speed Relay Control Circuit
Go to Step 3

Fuel pump relay , maybe ! Do you know what a wiring diagram is ? An how to use a voltmeter to test electrical circuit's . Free wiring diagrams here http://www.bbbind.com/free_tsb.html Enter vehicle info. year ,make , model an engine size. Under system click on engine ,then under subsystem click on fuel controls .Click the search button then the first blue link . The first diagram is the fuel pump electrical circuit . Watch this video . Fuel Pump Electrical Circuits Description and Operation

Is it a fuse or loose wire plug ? Thanks ????? Do guess test the electrical circuit for fuel pump . Voltage drop testing !
Testing Electric Fuel Pump Problems with Voltage Drop Test
Know what's wrong ,not guessing .

getting diagrams and specs on the internet is almost impossible unless you subscribe to a service and have a business, you should be able to hear the fule pump word for a few seconds when turning the key to on, if not disconnect the harness near the tank and check for voltage also check the fuse, not by looking at it check voltage,

You could desrupt pump if try to configure relay module is located inside the fuel reservoir.

your fuel pump relay is located next to the Master Cylinder,
you have three relay the close to the master cylinder is your fuel pump relay.

Let me know