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Fuel Sensors and Switches

Fuel Sensors and Switches

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-15%
AMS Performance Infiniti Q50 / Q60 VR30 Red ALPHA High Pressure Fuel Sensor (ALP.28.07.0010-1) Quick View
AMS Performance

AMS Performance Infiniti Q50 / Q60 VR30 Red ALPHA High Pressure Fuel Sensor (ALP.28.07.0010-1)

$230.00
$195.50
HXXP_ALP.28.07.0010-1
AMS Performance Fuel Delivery Fuel Sensors and Switches
The OEM fuel pressure sensor on the VR30 engine found in the Infiniti Q50 and Q60 vehicles is a common failure point for many...
-13%
003241_42_43.jpg Quick View
AutoMeter

AutoMeter Pressure Switch 50PSI 1/8in NPTF Male for Pro-Lite Warning Light (3243)

$35.91
$31.24
BDHZ_3243
AutoMeter Fuel Delivery Fuel Sensors and Switches
These high quality switches from AutoMeter can be paired with Pro-Lite warning lamps to supplement your instrumentation and improve driver visibility of critical conditions.Features:...
-12%
3279.jpg Quick View
AutoMeter

AutoMeter Fuel Pressure Snubber / Restrictor (3279)

$34.39
$29.92
BDHZ_3279
AutoMeter Fuel Delivery Fuel Sensors and Switches
Required for installation of 30 psi Fuel Pressure gauges on pre-injection pump Diesel Applications in order to protect sending units from excessive pressure spikes...
-12%
3241.jpg Quick View
AutoMeter

AutoMeter Pro-Lite Pressure Switch 18 PSI (3241)

$37.39
$32.53
BDHZ_3241
AutoMeter Fuel Delivery Fuel Sensors and Switches
These high quality switches from AutoMeter can be paired with Pro-Lite warning lamps to supplement your instrumentation and improve driver visibility of critical conditions.Features:...
-13%
3277.jpg Quick View
AutoMeter

AutoMeter Fitting Restrictor Adapter -4AN Male to 1/8in NPT Male Steel for Fuel and Nitrous (3277)

$17.81
$15.49
BDHZ_3277
AutoMeter Fuel Delivery Fuel Sensors and Switches
1/8" NPT M to -4AN M. For use on Nitrous and Fuel pressure applications where it is desirable to restrict pressure spikes and excessive...
-12%
003241_42_43.jpg Quick View
AutoMeter

AutoMeter Pro-Lite Pressure Switch 30 PSI (Closes at 30psi and lower, Opens at 32psi and higher) (3242)

$37.39
$32.53
BDHZ_3242
AutoMeter Fuel Delivery Fuel Sensors and Switches
These high quality switches from AutoMeter can be paired with Pro-Lite warning lamps to supplement your instrumentation and improve driver visibility of critical conditions.Features:...
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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.

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