Before working on Solara models, make sure your
Fuel Tank has enough fuel and inspect the fuel pump using the ignition key. Turn the key to ON to hear the fuel pump activate with a quick whirring noise for a few seconds. When no sound comes from turning the ignition on, look at the fuse situation in the engine compartment: examine IGN, EFI, C/OPN, and EFI relays and fuse. Look for voltage at the fuel pump connector whenever the ignition is running. If you find power there for two seconds, the fuel pump is bad; otherwise, the PCM may need repair. To measure fuel pump pressure, you must release any fuel system pressure, disconnect the fuel line from the
Fuel Rail, then use a special tool to separate the fuel line's quick connecting fittings. Connect fuel pressure lines along with clamps from the fuel rail to the feed line, turn the car's ignition, and write down the pressure value shown on the gauge. The fuel pump runs for two seconds when you turn on the ignition. Afterward, the pressure stays constant while the pump is off. Kick the engine on and keep it running; the fuel pressure should hold at its correct level. Watch the gauge reading on the
Fuel Pressure Regulator. Where it falls outside of allowed limits, the fuel pressure regulator must be replaced if your reading shows excessive pressure, while you must lookout for clogged filters or cracked fuel lines and test
Fuel Injectors if reading is low. Keep replacing both parts if you're still experiencing low pressure so your car won't have ongoing issues. After checking fuel pressure, drop the gauge and remove pressure from the fuel system.