Engine Sensors, Relays, Switches
- Standard®Tru-Tech™ Camshaft Position SensorTru-Tech™ Camshaft Position Sensor by Standard®. This premium product is the best way to go for those looking for the highest quality replacement that offers supreme levels of quality, performance and reliability. Designed to provide...Compliant with the strictest standards for qualityExpertly crafted using the up-to-date technology$9.18 - $62.00
- Standard®Tru-Tech™ Camshaft/Crankshaft Position SensorTru-Tech™ Camshaft/Crankshaft Position Sensor by Standard®. This premium product is the best way to go for those looking for the highest quality replacement that offers supreme levels of quality, performance and reliability. Designed...Compliant with the strictest standards for qualityExpertly crafted using the up-to-date technology$18.07 - $29.93
- Standard®Tru-Tech™ Crankshaft SensorTru-Tech™ Crankshaft Sensor by Standard®. This premium product is the best way to go for those looking for the highest quality replacement that offers supreme levels of quality, performance and reliability. Designed to provide a...Compliant with the strictest standards for qualityExpertly crafted using the up-to-date technology$12.48 - $67.41
- Standard®Tru-Tech™ Oil Pressure Gauge SwitchTru-Tech™ Oil Pressure Gauge Switch by Standard®. This premium product is the best way to go for those looking for the highest quality replacement that offers supreme levels of quality, performance and reliability. Designed to provide...Compliant with the strictest standards for qualityExpertly crafted using the up-to-date technology$6.72 - $39.77
- Standard®Tru-Tech™ Oil Pressure Light SwitchTru-Tech™ Oil Pressure Light Switch by Standard®. This premium product is the best way to go for those looking for the highest quality replacement that offers supreme levels of quality, performance and reliability. Designed to provide...Compliant with the strictest standards for qualityExpertly crafted using the up-to-date technology$6.35 - $14.50
- Standard®Tru-Tech™ Oil Pressure SwitchTru-Tech™ Oil Pressure Switch by Standard®. This premium product is the best way to go for those looking for the highest quality replacement that offers supreme levels of quality, performance and reliability. Designed to provide a...Compliant with the strictest standards for qualityExpertly crafted using the up-to-date technology$7.58 - $38.99
- Bosch®Oil Pressure SwitchOil Pressure Switch by Bosch®. This premium product is the best way to go for those looking for the highest quality replacement that offers supreme levels of quality, performance and reliability. Designed to provide a perfect fit for a...Compliant with the strictest standards for qualityExpertly crafted using the up-to-date technology$6.54 - $215.54
- Beck Arnley®Crankshaft Position SensorCrankshaft Position Sensor by Beck Arnley®. When investing in this superior product by Beck Arnley, expect to get the exact OEM look, function, and fit. The product was developed to stringent factory specifications and crafted using...OE quality products from top original equipmentTop quality materials$14.01 - $387.56
- URO Parts®Camshaft Position SensorCamshaft Position Sensor by URO Parts®. Replace your worn out engine part with this superior engine component designed by URO to restore your vehicle's factory performance. Manufactured to meet the highest OE standards, this reliable...Replaces hardened or cracked camshaft position sensor o-ring that can create oil or vacuum leaks and degrade engine performanceOE-style o-ring profile and durometer ensures proper seal between sensor body and head$9.27 - $30.57
- URO Parts®Oil Pressure SensorOil Pressure Sensor by URO Parts®. Replace your worn out engine part with this superior engine component designed by URO to restore your vehicle's factory performance. Manufactured to meet the highest OE standards, this reliable product...Replaces your worn out factory engine part to restore vehicle's performanceConstructed from top notch materials for ultimate strength and reliability$21.93 - $38.60
- URO Parts®Oil Pressure SwitchOil Pressure Switch by URO Parts®. Replace your worn out engine part with this superior engine component designed by URO to restore your vehicle's factory performance. Manufactured to meet the highest OE standards, this reliable...Replaces your worn out factory engine part to restore vehicle's performanceConstructed from top notch materials for ultimate strength and reliability$1.29 - $58.82
- Original Equipment®Crankshaft Position SensorCrankshaft Position Sensor by Original Equipment®. Looking for high-quality replacement parts to restore the performance of your vehicle? Then Original Equipment automotive parts are for you. They are manufactured from the finest...Perfect replacement for your damaged or worn out original partMade using high-grade materials for long-lasting dependability$23.67 - $250.76
- Original Equipment®Oil Pressure SenderOil Pressure Sender by Original Equipment®. Looking for high-quality replacement parts to restore the performance of your vehicle? Then Original Equipment automotive parts are for you. They are manufactured from the finest materials...Perfect replacement for your damaged or worn out original partMade using high-grade materials for long-lasting dependability$11.07 - $116.48
- Original Equipment®Oil Pressure SwitchOil Pressure Switch by Original Equipment®. Looking for high-quality replacement parts to restore the performance of your vehicle? Then Original Equipment automotive parts are for you. They are manufactured from the finest materials...Perfect replacement for your damaged or worn out original partMade using high-grade materials for long-lasting dependability$7.71 - $124.63
- WVE®Camshaft Position SensorCamshaft Position Sensor by WVE®. Replace your worn-out or faulty component with this quality replacement from WVE. This product is designed and tested to ensure the ultimate in durability and functionality. Made to meet or exceed the...Excellent replacement for your worn-out factory partDesigned to keep your vehicle running reliably mile after mile$8.96 - $1,356.90
- Delphi®Engine Oil Pressure SwitchEngine Oil Pressure Switch by Delphi®. Is your vehicle feeling down on power? Do you see dark puddles on the ground when you park? Is your CHECK ENGINE light on? Your engine may be in need of repair, but before you waste your time and...Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle$26.78 - $144.86
- gpd®Camshaft Position SensorCamshaft Position Sensor by gpd®. The electrical switch is designed to give feedback to the engine management system. The ECM controls the A/C system on modern vehicles. In earlier vehicles, they are used to directly turn the compressor...Designed to meet/exceed OE fit, form and functionDurability tested on every new design$10.63 - $155.21
- Vaico®Oil Pressure SwitchOil Pressure Switch by Vaico®. This top-grade product is expertly made in compliance with stringent industry standards to offer a fusion of a well-balanced design and high level of craftsmanship. Manufactured from industry-leading...Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle$29.10
- Crown®Crankshaft Position SensorCrankshaft Position Sensor by Crown®. This premium product is the best way to go for those looking for the highest quality replacement that offers supreme levels of quality, performance and reliability. Designed to provide a perfect fit...Compliant with the strictest standards for qualityExpertly crafted using the up-to-date technology$31.95 - $75.34
- Crown®Engine Camshaft Position SensorEngine Camshaft Position Sensor by Crown®. Crown Automotive is just the ticket if you want to get the most out of your vehicle as well as revel in a more exciting driving experience. You will surely get a real bang for the buck!Developed to improve your driving experienceConstructed to ensure ultimate operation$34.51 - $64.75
- Crown®Engine Oil Pressure SwitchEngine Oil Pressure Switch by Crown®. Crown Automotive is just the ticket if you want to get the most out of your vehicle as well as revel in a more exciting driving experience. You will surely get a real bang for the buck!Developed to improve your driving experienceConstructed to ensure ultimate operation$20.34 - $70.80
- DIY Solutions®Camshaft Position SensorCamshaft Position Sensor by DIY Solutions®. If you're seeking to get your steel stallion back to its tip-top condition, then this top-notch replacement solution is what you should definitely look out for. When it comes to quality,...Designed to help restore your vehicle to its former gloryQuick replacement to let you enjoy an awesome ride again$47.89 - $787.39
- DIY Solutions®Crankshaft Position SensorCrankshaft Position Sensor by DIY Solutions®. If you're seeking to get your steel stallion back to its tip-top condition, then this top-notch replacement solution is what you should definitely look out for. When it comes to quality,...Designed to help restore your vehicle to its former gloryQuick replacement to let you enjoy an awesome ride again$7.54 - $69.31$8.11 - $69.31Save up to 7%
- DIY Solutions®Engine Oil Pressure SensorEngine Oil Pressure Sensor by DIY Solutions®. If you're seeking to get your steel stallion back to its tip-top condition, then this top-notch replacement solution is what you should definitely look out for. When it comes to quality,...Designed to help restore your vehicle to its former gloryQuick replacement to let you enjoy an awesome ride again$56.05 - $99.91
- Febi®Camshaft Position SensorCamshaft Position Sensor by Febi®. This top-grade product is expertly made in compliance with stringent industry standards to offer a fusion of a well-balanced design and high level of craftsmanship. Manufactured from industry-leading...Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle$25.22 - $34.36
- Febi®Crankshaft Position SensorCrankshaft Position Sensor by Febi®. This top-grade product is expertly made in compliance with stringent industry standards to offer a fusion of a well-balanced design and high level of craftsmanship. Manufactured from industry-leading...Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle$22.92 - $113.71
- Febi®Oil Pressure SwitchOil Pressure Switch by Febi®. This top-grade product is expertly made in compliance with stringent industry standards to offer a fusion of a well-balanced design and high level of craftsmanship. Manufactured from industry-leading...Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle$3.92 - $11.15
- Steinjager®Engine Oil Pressure SwitchEngine Oil Pressure Switch by Steinjager®. Designed utilizing the latest technology, this product by Steinjager features premium quality and will perform better than advertised. Perfect for your vehicle and lifestyle, it is manufactured...Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle$16.99
- VDO®Crankshaft Position SensorCrankshaft Position Sensor by VDO®. This premium product is the best way to go for those looking for the highest quality replacement that offers supreme levels of quality, performance and reliability. Designed to provide a perfect fit...Made with precision and quality in mindDesigned to meet your specific needs$67.54 - $146.02
- VDO®Oil Pressure SwitchOil Pressure Switch by VDO®. This premium product is the best way to go for those looking for the highest quality replacement that offers supreme levels of quality, performance and reliability. Designed to provide a perfect fit for a...Made with precision and quality in mindDesigned to meet your specific needs$118.22 - $156.66
During vehicle operation, an assortment of sensors, senders, and switches sends voltage signals to an engine control system computer, called the Powertrain Control Module (PCM) or Engine Control Module (ECM). These voltage signals indicate engine load, vehicle speed, temperature, and other variables, and the computer uses the information to control the air/fuel mixture, ignition timing, emissions devices like the EGR valve, and dash indicators.
The oxygen (O2) sensor compares the oxygen content of the exhaust with the oxygen present in atmosphere and varies the voltage signal sent to the PCM/ECM accordingly. The computer uses the information to control fuel flow to maintain the air/fuel ratio for optimal performance, and lowest emissions. There are at least two O2 sensors, one located in the exhaust stream before the catalytic converter, and one afterward, also known as the catalyst monitor.
To know when to inject fuel and fire the spark plugs, the PCM/ECM needs to know the position of the valves in relation to the pistons and the rotational speed of the crankshaft. The Camshaft Position (CMP) sensor and Crankshaft Position (CKP) sensor provide these signals. Ignition timing is further controlled through the Knock Sensor (KS), which sends a voltage signal to the computer if vibration caused by detonation is detected, enabling the computer to retard spark advance and prevent engine damage.
The Throttle Position Sensor (TPS) signals the computer the position of the throttle shaft, indicating how fast you want to go. The PCM/ECM uses this information along with the Mass Air Flow (MAF) sensor signal, to calculate engine load, with increased load requiring more fuel. The Engine Coolant and Intake Air Temperature, supplied by the ECT and IAT sensors respectively, enable the computer to richen the mixture and increase spark advance when the engine is cold and then lean it out and retard timing as the engine warms up. Cooling fan operation and EGR valve opening also rely on temperature signals to the computer.
The Power Steering (PS) switch and A/C sensor signal the computer that there is increased load from power steering pump (such as during parking maneuvers) and A/C compressor operation, so the PCM/ECM can raise idle speed to prevent stalling. A brake switch can signal the computer to turn off the cruise control or disengage the torque converter clutch. The PCM/ECM also controls the dash gauges on modern vehicles, relying on input from an oil pressure sender, the Vehicle Speed Sensor (VSS), and the ECT sensor. Charging system operation, and the related dash gauge or warning light, are also controlled by the PCM/ECM.
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