If you suspect insufficient fuel delivery, check the following items first. Check the battery and make sure it's fully charged. Check the fuel pump fuse. Check the fuel filter for restriction. Inspect all fuel lines to ensure that the problem is not simply a leak in a line. Place the transmission in Park (automatic) or neutral (manual) and apply the parking brake. Have an assistant cycle the ignition key On and Off several times while you listen for the sound of the fuel pump operating inside the fuel tank. Remove the rear seat cushion and the fuel pump access cover and then listen to, or feel the top of, the fuel pump module. You should hear a "whirring" sound, indicating that the fuel pump is operating. If the fuel pump is operating, proceed to the pressure check. If there is no sound from the pump, disconnect the fuel pump check connector and power up the fuel pump using a jumper cable. The pump should operate. If it doesn't, check the fuel pump circuit, related fuses, fuel pump relay, and related wiring to ensure power is reaching the fuel pump connector. Check the ground circuit for continuity. If the power and ground circuits are good and the fuel pump does not operate, remove the fuel pump and check for open circuits in the fuel pump module wiring and connectors. If the wiring and connectors are good, replace the fuel pump. To perform a pressure check, relieve the system fuel pressure and disconnect the negative battery cable. On 2012 and earlier models, reconnect the fuel pump connector. On 2014 and later models, reinstall the fuel pump fuse. For 2000 and earlier models, locate the fuel filter and remove the cable tie that attaches the fuel pressure line to the fuel return line. Unplug the brake fluid level sensor electrical connector from the master cylinder. Put a shop rag around the fuel line retaining bolt on top of the fuel filter and then remove the bolt and disconnect the fuel line from the filter. Connect a fuel pressure gauge to the fuel filter in place of the fuel line. For 2001 and later models, use the proper adapters to connect the fuel pressure gauge to the fuel rail. Reconnect the negative battery cable, start the engine, and check for leaks. Measure the fuel pressure and compare it to the specified measurement. Disconnect the vacuum line from the fuel pressure regulator - the fuel pressure should immediately increase. Measure the fuel pressure again and compare it to the specified measurement.
