no fuel to fuel rail
I have a 1998 Dodge Dakota 4x4 3.9 engine. I replaced the fuel sending unit. Still no fuel to pressure
relief valve on fuel rail. I checked all fuses and swapped relays in fuses box under hood. Also checked all
fuses in cab. Still no fuel to fuel rail. I'm lost.
maybe the fuel pump. And it does have a relay so you did the right thing there
They are about 120 bucks
After verifying that no Fuel Pressure exists, check that the Fuel Pump is getting power (12 Volts). This can be done by tapping into the power circuit that feeds the pump with 12 volts with a Multimeter (but without dropping the Fuel Tank to remove the Fuel Pump). Once you're tapped in, have a helper crank the Engine while you observe your Multimeter in Volts DC mode. If Voltage is present (12 Volts), then you have confirmed that the Fuel Pump Fuse and Fuel Pump Relay are working perfectly. If your Multimeter registers 12 Volts... you can replace the Fuel Pump with confidence.
use jumper wire from verticle slots in relay box. This will independently run fuel pump. It no pressure then fuel pump or wiring to fuel pump is faulty. Make sure you have current in the slots while testing.
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