1996 Cadillac Eldorado ETC, No power to Fuel Pump - Filter, Fuse, Connections & Relay all good, what can it be?

Hi, I have a 1996 Cadillac Eldorado ETC with 180K miles. It has been running fine except for starting, it used to take a few cranks at times but other than that it was fine. My fuel pump seemed to have had failed and I replaced it with another but I still don't get any fuel pressure to the fuel rail. I have replaced the fuel filter, and a fuel pump relay located in the engine bay driver side fuse box. I have also installed an inline fuel pump and that get gas to the rails but it lack the high pressure required for EFI. My original fuel pump works now that I have tested it, so that was not the problem, it seems it might be an electrical issue since there seems to be no power getting to the in-tank fuel pump. My question.- Is there any other electrical components I need to look for and replace that control the power sent to the fuel pump? I cant afford to take it to any shop, or put it on a diagnostics system, I have to be able to bypass or rigg or fix myselfwhat do you think?

Answer:

Put a voltmeter or test lamp between the pump power connection and ground. Switch on the ignition, and see whether the voltage is there. If not, and you reckon the fuse and relay are definitely OK, you have a problem with the power wire or connections, or the earthing of the pump. If the voltage IS there, your pump is stuck or burned out or bad earth.

run a jumper wire to ur relay from a remote hot wire in ur fuse panel, but first check ur crank or cam sensor. that can cause the starting issue

1996 Cadillac Eldorado Etc

You have a open circuit from the relay to the fuel pump.Check continuity from those two points.If no continuity and hot leg from relay is hot,run a new wire from the relay to the fuel pump. Cam sensor plug with power on should read about 8 volts at the plug and 5 volts going to the computer.If you do not have 5 volts coming from the sensor to the computer ,the sensor could be bad if you have the 8 volt input before the came sensor. Make sure the oil pressure sending unit is plugged in as if it is unplugged it will not allow the injectors to work.