Hyundai Repair Questions? Ask a Mechanic for Answers ASAP
Hello my name is Angel
If you're not getting the ground that is supplied by the computer to operate the fuel pump relay, your computer might not be getting the ground it needs. find a wiring diagram and the computer. the connectors have one or two thicker black wires in each connector to the computer, use a jumper wire from ground to the back of those black wires. be sure to leave the computer connected and make sure that you have inserted the ground wire into the back of that wire terminal. then turn the ignition key to start, listen for the fuel pump to turn on for 3 seconds. if it comes on then you have a bad ground and you can run a new one to any unpainted metal on the vehicle. you will have to try this each time you try one of the black wires to the computer.
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