Questions & Answers for: Subaru low voltage on fuel pump

...low voltage condition in the battery, Kragen and other parts stores like it will test your battery and charging system (alternator) for free, but it is pretty safe to say the battery is toast. Don't ...

...cannot be driven by the wimpy TTL (transistor to transistor logic) outputs on the computer.  This is what a relay is for, it allows low voltage and low current control over a high current

...VOLTAGE IS GETTING LOW BECAUSE YOUR CHARGING SYSTEM IS NOT FUNCTIONING...AS THE VOLTAGE DROPS THE IGNITION SYSTEMS SPARK ALSO GETS LOW CAUSING MISFIRING OF MOTOR AND LOSS OF POWER.. PUT A VOLT METER ...

...voltage low===causes--wiring---sensor---ECM . IT may be that the sensor is not communicating correctly with the ECM so the fuel settings are off. I would also check the fuel pressure in the fuel ...

...voltage low 23- mixture control (m/c) solenoid or circuit (carbureted models) 23- manifold air temperature (mat) sensor or circuit (1990 and earlier models) 23- intake air temperature (iat) sensor ...