Hi, I have a 2001 eclipse.fuel pump not working.Checked for power going to pump with test light and got power,but pump do not run,connected the pump to battery and it runs.What is the voltage to the pump be? Thanks.

Take a wire and run it from the battery to the pump if if works u have a short in the wiring.

Have you done the engine fault code test? Have you verified the correct fuel pressure under a load? Has the camshaft timing been checked? Has the exhaust system been checked for excessive back pressure due to a failed catalytic converter?

check electrical connections

You might want to double check that connector to the fuel pump. These cars are known for melting the inside of the connector and causing a poor connection. You'll need to remove the pump also to check the inside of the pump connector. Look for a dark brown discoloration. If you do have this discoloration, replace the pump module and the electrical connector. You may want to test the voltage to the connector to make sure that you have 12 volts going to the pump

Test for ground and power at your fuel pump connector. Also, the sending units sometimes come without the pump itself wired in. You have to actually splice in connections sometimes. If you get stuck, dropping the tank again and removing the sending unit to inspect could be your next step.

O.K. this is going to be long but stick with me.
The gray wire that goes to the plug at the sending unit is the one to run the pump. We need to get power to this wire. This wire runs to the fuel pump relay. The relay has 4 pins one is the gray wire-one is the 15 amp power for the pump that has battery voltage with the key in the run and start position. one is ground and one is the relay trigger from the ecm. Pull the relay and look real close on the bottom side of it by the pins there will be numbers 30,85,86,87. 85 and 86 control the relay 30 is the power from the fuse and 87 is the gray wire going to your fuel pump. If you use a test light and see if it lights up between pin 85 and 86 when you first turn on the key (should come on for 5 seconds or so). If not we have a problem on the computer side. If so go to #2 below. If not ground test light and try 85 then 86 if it lights up on one of them when you first turn on key the other post (of 85 or 86) has a bad ground.
#2 So we now know the relay circuit is good Turn key on and check for voltage between post 30 and ground. if there is voltage then run a jumper wire from battery voltage through a 15 amp fuse to post 87 if the pump comes on its the relay if it stays off then there is a open in the circuit from the relay to the pump. don't forget to check for a good connection where the wires go into the plastic on the top of the sending unit. reply if I typed to fast and I can walk you through any step you have problems with.
Good Luck and God Bless

Obviously, the pump is not receiving any power and your rube goldberg is not doing the trick. Get a hold of a schematic and you will do the job right. In the meantime just hookup a wire from the battery plus terminal to the pump plus terminal with a on/off switch so you can turn the pump on and off manually.

I've run into new pumps that didn't work. If there is power at the pump and it is not pumping, then the pump should be replaced, again (under warranty).

Check the starter fuse and the emergency fuel cut off switch located in passenger kickboard area. PUSH BUTTON to reset

Hi the ignition was turned to the acces. possition
it needs to be turned to the RUN possition.there is no power to the fuel pump only in the CRANK and RUN possition
then if there is still no power there then you need to trace the wiring
hope this helps