no fuel to fuel rail

10

Asked by Feb 02, 2013 at 06:18 AM about the 1998 Dodge Dakota 2 Dr SLT 4WD Standard Cab SB

Question type: Maintenance & Repair

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.

4 Answers

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.

2 of 2 people found this helpful.
190

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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