Engine Sensors, Relays, Switches
![Engine Sensors, Relays, Switches](https://ic.carid.com/pages/engine-sensors-relays-switches/engine-sensors-relays-switches_collage_0.jpg)
- Motorcraft®Oil Pressure SwitchOil Pressure Switch by Motorcraft®. Motorcraft is the way to restore the performance of your vehicle. Designed specifically for your vehicle, Motorcraft products meet stringent Ford Motor Company standards and feature OEM quality...Made with precision and quality in mindDesigned to meet your specific needs$2.20 - $89.24
- Walker Products®Engine Oil Pressure SwitchEngine Oil Pressure Switch by Walker Products®. 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...High quality at an affordable priceExpertly made from premium materials$6.57 - $104.54
- SKP®Engine Camshaft Position SensorEngine Camshaft Position Sensor by SKP®. 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...Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle$7.11 - $31.89
- Standard®Oil Pressure SenderOil Pressure Sender 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 perfect fit for...Compliant with the strictest standards for qualityExpertly crafted using the up-to-date technology$3.66 - $225.33
- Beck Arnley®Oil Pressure SwitchOil Pressure Switch by Beck Arnley®. 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...Matches OE form, fit and functionMade with high quality material and componentry$3.64 - $95.65
- WVE®Crankshaft Position SensorCrankshaft 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$10.20 - $1,662.71
- Delphi®Engine Crankshaft Position SensorEngine Crankshaft Position Sensor by Delphi®. Delphi sensors use the Hall Effect or magneto resistive (MR) principles for accurate and clean signal input to the electronic control module (ECM). The result is more design flexibility to...Extensive coverageApplications for ignition (camshaft and crankshaft position and speed), transmission (vehicle or engine speed) and anti-lock braking systems (wheel speed)$11.86 - $136.48
- NTK®Camshaft Position SensorCamshaft Position Sensor by NTK®. Designed utilizing the latest technology, this product features premium quality and will perform better than advertised. Perfect for your vehicle and lifestyle, it is manufactured to meet or exceed...Sealed connections to prevent leaks, environmental corrosion and performance issuesDesigned to deliver trouble-free, consistent performance$14.48 - $574.17
- SMP®Engine Camshaft Position SensorEngine Camshaft Position Sensor by SMP®. 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...Designed specifically for motorcycle applicationsPerfect to help you work more efficiently$9.22 - $112.92
- Vemo®Exhaust Pressure SensorExhaust Pressure Sensor by Vemo®. Vemo products are made by high-quality materials and undergo strict quality tests. They are, thereby, the perfect alternative to the original part.Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle$38.80 - $258.73
- ACDelco®GM Original Equipment™ Oil Pressure SwitchGM Original Equipment™ Oil Pressure Switch 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 lifestyle, it is...Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle$10.18 - $37.64
- ACDelco®Genuine GM Parts™ Camshaft Position SensorGenuine GM Parts™ Camshaft Position Sensor by ACDelco®. This product is made of high-quality components to meet and exceed strict quality requirements. Designed using state-of-the-art technology and with customers in mind. It will...Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle$31.48 - $177.03
- ACDelco®Genuine GM Parts™ Crankshaft Position SensorGenuine GM Parts™ Crankshaft Position Sensor by ACDelco®. This product is made of high-quality components to meet and exceed strict quality requirements. Designed using state-of-the-art technology and with customers in mind. It will...Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle$9.18 - $242.36
- ACDelco®Genuine GM Parts™ Oil Pressure SensorGenuine GM Parts™ Oil Pressure Sensor by ACDelco®. This product is made of high-quality components to meet and exceed strict quality requirements. Designed using state-of-the-art technology and with customers in mind. It will meet...Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle$32.02 - $130.22
- ACDelco®Professional™ Engine Oil Pressure SensorProfessional™ Engine Oil Pressure Sensor by ACDelco®. ACDelco Professional Engine Oil Pressure Sender With Gauge is an ideal high quality aftermarket replacement component for one or more of the following vehicle systems: cooling,...Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle$8.28 - $48.91
- Genuine®Oil Pressure SensorOil Pressure Sensor by Genuine®. If your engine parts is in need of repair, don't compromise the performance and safety of your car with suspect, off-brand replacement parts from the local auto parts chain store. On our website you'll...Designed to restore your vehicle’s engine partsGenuine OE replacement parts from the OE manufacturer$8.52 - $353.61
- Standard®Blue Streak™ Oil Pressure SenderBlue Streak™ Oil Pressure Sender 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...OE quality parts from top original equipment and aftermarket manufacturersThe finest quality at a great price$8.42 - $27.91
- Standard®Intermotor™ Camshaft Position SensorIntermotor™ 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...Compliant with the strictest standards for qualityExpertly crafted using the up-to-date technology$10.07 - $591.95
- Standard®Oil Pressure Light SwitchOil 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 a perfect...Compliant with the strictest standards for qualityExpertly crafted using the up-to-date technology$15.95 - $129.75
- 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$10.28 - $67.41
- 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$7.44 - $38.99
- Bosch®Camshaft Position SensorCamshaft Position Sensor 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...Compliant with the strictest standards for qualityExpertly crafted using the up-to-date technology$17.22 - $162.64
- Bosch®Pressure SensorPressure Sensor 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$14.17 - $294.84
- Original Equipment®Camshaft Position SensorCamshaft 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$12.76 - $279.01
- 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$25.15 - $250.76
- URO Parts®Engine Crankshaft Position SensorEngine Crankshaft 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...Replaces your worn out factory engine part to restore vehicle's performanceConstructed from top notch materials for ultimate strength and reliability$11.54 - $52.94
- Steinjager®Engine Oil Pressure SensorEngine Oil Pressure Sensor 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$30.99
- Holstein®Engine Camshaft Position SensorEngine Camshaft Position Sensor by Holstein®. The Camshaft Position Sensor monitors the rotating position of the camshaft relative to the crankshaft position. This data is sent to the vehicles ECU where it is used to adjust the spark...Holstein focuses on using only the highest quality materials,Manufactured to exacting standards for an aftermarket product that is truly built to match or exceed the OE part$7.77 - $205.20
- VDO®Camshaft Position SensorCamshaft 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 for...Made with precision and quality in mindDesigned to meet your specific needs$52.48 - $133.76
- Mitsubishi Electric®Camshaft Position SensorCamshaft Position Sensor by Mitsubishi Electric®. 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...Made with precision and quality in mindDesigned to meet your specific needs$19.62 - $450.55
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.
Browse by Part Name
Featured Brands
Related Categories
Engine Assemblies
Motor Mounts
Engine Blocks
Valves & Valvetrain Parts
Pistons, Rings & Connecting Rods
Oil Filters
Serpentine Belts & Auxiliary Drive Belts
Valve Covers
Timing Gears, Chains & Covers
Engine Oil Pans, Drain Plugs & Dipsticks
Cylinder Heads
Timing Belts
Engine Pulleys
Oil Pumps
Drive Belt Tensioners
Oil Coolers
Camshafts
Crankshafts
Engine Management Systems
Engine Bearings
Harmonic Balancers
Engine Rebuild Kits
Oil Catch Cans
Balance Shafts
Engine Swap Kits
Engine Wiring Harnesses
Intercoolers
Throttle Bodies
Carburetors
Motor Oils