Troubleshooting a KIA Fuel Pump | It Still Runs You should hear the fuel pump humming; it will turn on for two seconds at a time, since the Kia's computer will not detect the engine turning over. If you cannot hear a humming sound, then there is most likely a problem with the relay, vehicle computer, fuel pump or the fuel pump's wiring. Kia Fuel Pump Relay | Auto Parts Warehouse Not sure which Kia Fuel Pump Relay to buy? We offer a wide range of Kia Fuel Pump Relays of all the best brands in the industry at an affordable rate that fits the Price Range you are looking for. Shop with us at wholesale prices and get free shipping over $50.