Fuel Sensors, Relays & Switches
- Vemo®Fuel Pressure SensorFuel Pressure Sensor by Vemo®. Bring your vehicle’s fuel system back to its top shape with this top-notch part. Designed as a direct-fit replacement of your worn-out or malfunctioning part, it will provide easy, no-hassle installation...Designed as a replacement for your worn-out fuel system partWill help optimize your vehicle’s performance and fuel efficiency$57.19 - $577.91
- Vemo®Fuel Pump RelayFuel Pump Relay by Vemo®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind. It will meet your needs and deliver great quality at an...Designed as a replacement for your worn-out fuel system partWill help optimize your vehicle’s performance and fuel efficiency$9.21 - $538.70
- Niles®Fuel Injection RelayFuel Injection Relay by Niles®. Bring your vehicle’s fuel system back to its top shape with this top-notch part. Designed as a direct-fit replacement of your worn-out or malfunctioning part, it will provide easy, no-hassle...Designed as a replacement for your worn-out fuel system partWill help optimize your vehicle’s performance and fuel efficiency$20.52
- ACDelco®GM Original Equipment Accelerator Pedal Position Sensor ConnectorGM Original Equipment Accelerator Pedal Position Sensor Connector by ACDelco®. Bring your vehicle’s fuel system back to its top shape with this top-notch part. Designed as a direct-fit replacement of your worn-out or...Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle$32.17
- ACDelco®GM Original Equipment Fuel Sensor ConnectorGM Original Equipment Fuel Sensor Connector by ACDelco®. Bring your vehicle’s fuel system back to its top shape with this top-notch part. Designed as a direct-fit replacement of your worn-out or malfunctioning part, it will...Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle$32.72
- ACDelco®GM Original Equipment Fuel Tank Pressure Sensor CoverGM Original Equipment Fuel Tank Pressure Sensor Cover by ACDelco®. Bring your vehicle’s fuel system back to its top shape with this top-notch part. Designed as a direct-fit replacement of your worn-out or malfunctioning part, it...Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle$5.59
- ACDelco®GM Original Equipment™ Barometric Pressure SensorGM Original Equipment™ Barometric Pressure Sensor by ACDelco®. Designed utilizing the latest technology, this Barometric Pressure Sensor by ACDelco features premium quality and will perform better than advertised. Perfect for your...Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle$65.43
- ACDelco®GM Original Equipment™ Carburetor Choke Heater SwitchGM Original Equipment™ Carburetor Choke Heater Switch by ACDelco®. Bring your vehicle’s fuel system back to its top shape with this top-notch part. Designed as a direct-fit replacement of your worn-out or malfunctioning part, it...Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle$28.11 - $30.11
- ACDelco®GM Original Equipment™ Diesel Fuel Tank Temperature Sensor ConnectorGM Original Equipment™ Diesel Fuel Tank Temperature Sensor Connector by ACDelco®. Bring your vehicle’s fuel system back to its top shape with this top-notch part. Designed as a direct-fit replacement of your worn-out or...Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle$53.63
- ACDelco®GM Original Equipment™ Fuel Heater ConnectorGM Original Equipment™ Fuel Heater Connector by ACDelco®. Bring your vehicle’s fuel system back to its top shape with this top-notch part. Designed as a direct-fit replacement of your worn-out or malfunctioning part, it will provide...Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle$38.83
- ACDelco®GM Original Equipment™ Fuel Injection Cold Advance Solenoid ConnectorGM Original Equipment™ Fuel Injection Cold Advance Solenoid Connector by ACDelco®. Designed utilizing the latest technology, this product by ACDelco features premium quality and will perform better than advertised. Perfect for your...Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle$12.81
- ACDelco®GM Original Equipment™ Fuel Injection Harness ConnectorGM Original Equipment™ Fuel Injection Harness Connector by ACDelco®. Bring your vehicle’s fuel system back to its top shape with this top-notch part. Designed as a direct-fit replacement of your worn-out or malfunctioning part, it...Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle$9.57
- ACDelco®GM Original Equipment™ Fuel Pump Control Module ConnectorGM Original Equipment™ Fuel Pump Control Module Connector by ACDelco®. Designed utilizing the latest technology, this product by ACDelco features premium quality and will perform better than advertised. Perfect for your vehicle and...Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle$28.83
- ACDelco®GM Original Equipment™ Fuel Pump Cycle Control Module ConnectorGM Original Equipment™ Fuel Pump Cycle Control Module Connector by ACDelco®. Designed utilizing the latest technology, this product by ACDelco features premium quality and will perform better than advertised. Perfect for your vehicle...Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle$41.28 - $54.30
- ACDelco®GM Original Equipment™ Fuel Pump and Engine Oil Pressure Indicator SwitchGM Original Equipment™ Fuel Pump and Engine Oil Pressure Indicator Switch by ACDelco®. Bring your vehicle’s fuel system back to its top shape with this top-notch part. Designed as a direct-fit replacement of your worn-out or...Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle$37.13
- ACDelco®GM Original Equipment™ Fuel Sender ConnectorGM Original Equipment™ Fuel Sender Connector by ACDelco®. Bring your vehicle’s fuel system back to its top shape with this top-notch part. Designed as a direct-fit replacement of your worn-out or malfunctioning part, it will provide...Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle$30.91 - $60.16
- ACDelco®GM Original Equipment™ Fuel Tank Harness ConnectorGM Original Equipment™ Fuel Tank Harness Connector by ACDelco®. Bring your vehicle’s fuel system back to its top shape with this top-notch part. Designed as a direct-fit replacement of your worn-out or malfunctioning part, it will...Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle$18.66 - $133.01
- ACDelco®GM Original Equipment™ Throttle Control Motor ConnectorGM Original Equipment™ Throttle Control Motor Connector by ACDelco®. Bring your vehicle’s fuel system back to its top shape with this top-notch part. Designed as a direct-fit replacement of your worn-out or malfunctioning part, it...Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle$35.00
- ACDelco®GM Original Equipment™ Throttle Position Sensor ConnectorGM Original Equipment™ Throttle Position Sensor Connector by ACDelco®. Bring your vehicle’s fuel system back to its top shape with this top-notch part. Designed as a direct-fit replacement of your worn-out or malfunctioning part, it...Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle$35.61 - $60.44
- ACDelco®Genuine GM Parts Fuel Injection Cold Start RelayGenuine GM Parts Fuel Injection Cold Start Relay by ACDelco®. Bring your vehicle’s fuel system back to its top shape with this top-notch part. Designed as a direct-fit replacement of your worn-out or malfunctioning part, it will...Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle$8.36 - $39.32
- ACDelco®Genuine GM Parts Fuel Tank Pressure SensorGenuine GM Parts Fuel Tank Pressure Sensor by ACDelco®. Bring your vehicle’s fuel system back to its top shape with this top-notch part. Designed as a direct-fit replacement of your worn-out or malfunctioning part, it will provide...Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle$37.49 - $93.58
- ACDelco®Genuine GM Parts Fuel Tank Selector SwitchGenuine GM Parts Fuel Tank Selector Switch by ACDelco®. Bring your vehicle’s fuel system back to its top shape with this top-notch part. Designed as a direct-fit replacement of your worn-out or malfunctioning part, it will provide...Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle$28.22 - $29.38
- ACDelco®Genuine GM Parts Throttle Position SensorGenuine GM Parts Throttle Position Sensor by ACDelco®. Bring your vehicle’s fuel system back to its top shape with this top-notch part. Designed as a direct-fit replacement of your worn-out or malfunctioning part, it will provide...Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle$92.87 - $214.81
- ACDelco®Genuine GM Parts™ Flex Fuel SensorGenuine GM Parts™ Flex Fuel Sensor by ACDelco®. Bring your vehicle’s fuel system back to its top shape with this top-notch part. Designed as a direct-fit replacement of your worn-out or malfunctioning part, it will provide easy,...Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle$8.43 - $200.19
- ACDelco®Genuine GM Parts™ Fuel Injection ConnectorGenuine GM Parts™ Fuel Injection Connector by ACDelco®. Bring your vehicle’s fuel system back to its top shape with this top-notch part. Designed as a direct-fit replacement of your worn-out or malfunctioning part, it will...Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle$34.87 - $119.17
- ACDelco®Genuine GM Parts™ Fuel Pressure SensorGenuine GM Parts™ Fuel Pressure Sensor by ACDelco®. Bring your vehicle’s fuel system back to its top shape with this top-notch part. Designed as a direct-fit replacement of your worn-out or malfunctioning part, it will provide...Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle$39.42 - $110.69
- ACDelco®Genuine GM Parts™ Fuel Pump Control ModuleGenuine GM Parts™ Fuel Pump Control Module by ACDelco®. Bring your vehicle’s fuel system back to its top shape with this top-notch part. Designed as a direct-fit replacement of your worn-out or malfunctioning part, it will...Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle$35.63 - $455.81
- ACDelco®Genuine GM Parts™ Fuel Pump Driver ModuleGenuine GM Parts™ Fuel Pump Driver Module by ACDelco®. Bring your vehicle’s fuel system back to its top shape with this top-notch part. Designed as a direct-fit replacement of your worn-out or malfunctioning part, it will...Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle$96.05 - $318.00
- ACDelco®Genuine GM Parts™ Fuel Sender Control Module ConnectorGenuine GM Parts™ Fuel Sender Control Module Connector by ACDelco®. Bring your vehicle’s fuel system back to its top shape with this top-notch part. Designed as a direct-fit replacement of your worn-out or malfunctioning part, it...Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle$31.40
- ACDelco®Professional Fuel Injector ConnectorProfessional Fuel Injector Connector by ACDelco®. Bring your vehicle’s fuel system back to its top shape with this top-notch part. Designed as a direct-fit replacement of your worn-out or malfunctioning part, it will provide easy,...Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle$32.49
For a modern electronic fuel injection system to function properly, there must be an accurate and continuous flow of electrical signals from the various sensors that supply information to the PCM (Powertrain Control Module). The PCM uses this input along with internal programming, to control the system through the output of signals to actuators like fuel injectors, relays, valves and motors, ensuring optimal performance and economy with minimal emissions.
The causes of sensor failure can vary according to the type of sensor and its location. All electrical components are exposed to temperature extremes and the environment. Contamination, mechanical breakage, and corrosion and wiring damage that can cause opens or short circuits can all result in electrical malfunctions. Besides poor performance, such events will usually cause a fault code to be stored in the PCM and the illumination of the CHECK ENGINE light.
On most late model electronically fuel injected vehicles, the PCM must receive a cranking signal from the crankshaft or camshaft sensor before energizing the fuel pump relay. The relay in turns applies voltage to the fuel pump so it can pressurize the fuel system. When the engine is running, fuel system sensors supply engine load and driver demand info to the PCM so it can in turn calculate fuel flow. The Mass Air Flow (MAF) sensor measures the amount of air entering the engine and the Throttle Position Sensor (TPS) indicates throttle plate position and opening speed, and the driver’s desired rate of acceleration.
When the engine warms up it goes into closed loop, and the PCM uses input from the oxygen sensor along with the other fuel system sensors to calculate fuel flow. The oxygen sensor compares the oxygen content in the exhaust stream with atmosphere in order to maintain the most efficient air/fuel ratio for combustion. In response to these inputs, the PCM varies the fuel injector pulse width to suit fuel demands. In general, the pulse width is shorter at idle when less fuel is needed, and lengthened when the engine is under load and more fuel is needed. The PCM also controls other actuators like the Idle Air Control (IAC) valve.
Although individual components can fail, it’s also common for corrosion and breaks in wires and connectors to cause shorts and opens that can result in circuit failures, and even cause a voltage overload that can destroy an expensive component like a PCM. It’s usually difficult or impossible to clean and repair the small, delicate contacts in electrical connectors, so in addition to our large selection of replacement fuel system sensors, switches, relays, and actuators, we also have the OE connectors for most of these components, complete with the wiring “pigtail” so the connector can easily be spliced into the harness.