Engine Sensors, Relays, Switches
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- Forecast®Crankshaft Position SensorCrankshaft Position Sensor by Forecast®. 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...OE quality parts from top original equipment and aftermarket manufacturersThe finest quality at a great price$42.18 - $194.64
- Forecast®Oil Pressure SenderOil Pressure Sender by Forecast®. 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...High quality at an affordable priceExpertly made from premium materials$9.33 - $147.96
- Forecast®Oil Pressure SwitchOil Pressure Switch by Forecast®. 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...OE quality parts from top original equipment and aftermarket manufacturersThe finest quality at a great price$9.19 - $146.07
- Futaba®Oil Pressure SwitchOil Pressure Switch by Futaba®. 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$7.99 - $26.88
- Intermotor®Camshaft Position SensorCamshaft Position Sensor by Intermotor®. 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...Made with precision and quality in mindDesigned to meet your specific needs$203.17 - $224.00
- Intermotor®Crankshaft Position SensorCrankshaft Position Sensor by Intermotor®. 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$32.74 - $142.20
- Intermotor®Oil Pressure SenderOil Pressure Sender by Intermotor®. 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$11.75 - $22.83
- Intermotor®Oil Pressure SwitchOil Pressure Switch by Intermotor®. 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$13.22 - $24.98
- Japanese®Engine Oil Pressure SensorEngine Oil Pressure Sensor by Japanese®. 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$24.34
- Mando®Camshaft Position SensorCamshaft Position Sensor by Mando®. 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...OE quality parts from top original equipment and aftermarket manufacturersThe finest quality at a great price$29.01 - $100.06
- Mando®Crankshaft Position SensorCrankshaft Position Sensor by Mando®. 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...OE quality parts from top original equipment and aftermarket manufacturersThe finest quality at a great price$23.80 - $117.24
- Meistersatz®Oil Pressure SenderOil Pressure Sender by Meistersatz®. The Meistersatz brand is recognized worldwide as the solution in parts for vehicles with quality standards similar to Original Equipment, this allows us to offer a wide range of products and...The quality of the Meistersatz parts are endorsed by the Manufacturers of Original Equipment Auto parts more recognized worldwideWhen you think of solutions in the installation of Automotive Parts, Meistersatz is your closest option to the Original$12.70
- Meistersatz®Oil Pressure SwitchOil Pressure Switch by Meistersatz®. The Meistersatz brand is recognized worldwide as the solution in parts for vehicles with quality standards similar to Original Equipment, this allows us to offer a wide range of products and...The quality of the Meistersatz parts are endorsed by the Manufacturers of Original Equipment Auto parts more recognized worldwideWhen you think of solutions in the installation of Automotive Parts, Meistersatz is your closest option to the Original$11.82 - $13.72
- Meyle®Camshaft Position SensorCamshaft Position Sensor by Meyle®. Meyle engineers maintain close contact with their own production facilities and partners to ensure targeted management of specifications, requirements and processes as well as the highest quality...Designed for a long service lifeTop-quality car parts which are technically superior to the OE part$34.95 - $60.59
- Meyle®Crankshaft Position SensorCrankshaft Position Sensor by Meyle®. Meyle engineers maintain close contact with their own production facilities and partners to ensure targeted management of specifications, requirements and processes as well as the highest quality...Designed for a long service lifeTop-quality car parts which are technically superior to the OE part$33.24 - $77.33
- NGK®Engine Camshaft Position SensorEngine Camshaft Position Sensor by NGK®. Camshaft position sensors monitor the rotations that camshafts make to open the intake and exhaust valves. Camshaft rotation timing is critical for the ECU, making the accuracy of the electrical...Provide faster starts and quicker acceleration than a traditional plugEnsure better fuel economy and lower emissions compared to an original plug$98.62
- Pex®Camshaft Position SensorCamshaft Position Sensor by Pex®. 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$56.53 - $67.98
- Prenco®Camshaft Position SensorCamshaft Position Sensor by Prenco®. 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...Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle$14.86 - $98.95
- Prenco®Crankshaft Position SensorCrankshaft Position Sensor by Prenco®. 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...Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle$13.49 - $86.45
- Rein®Oil Pressure SenderOil Pressure Sender by Rein®. 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$4.60 - $6.08
- Rein®Oil Pressure SwitchOil Pressure Switch by Rein®. 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 gas...OE quality parts from top original equipment and aftermarket manufacturersThe finest quality at a great price$5.54 - $12.01
- Sankei®Oil Pressure SwitchOil Pressure Switch by Sankei®. 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$9.42 - $107.61
- Santech®Camshaft Position SensorCamshaft Position Sensor by Santech®. Increase the life of your vehicle's engine by keeping your cooling system in top condition. Replace your faulty engine cooling component with this highly efficient replacement product and be sure...Made to keep your vehicle's engine running coolDesigned to maintain proper cooling level and prevent overheating$42.00 - $46.07
- Standard Motor®Oil Pressure SwitchOil Pressure Switch by Standard Motor®. 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...Made with precision and quality in mindDesigned to meet your specific needs$36.17
- Valeo®Crankshaft Position SensorCrankshaft Position Sensor by Valeo®. Designed utilizing the latest technology, this product by Valeo features premium quality and will perform better than advertised. Perfect for your vehicle and lifestyle, it is manufactured to meet...Made with precision and quality in mindDesigned to meet your specific needs$82.44
- Walker®Camshaft Position SensorCamshaft Position Sensor by Walker®. With their extensive selection of accessories and hardware for the exhaust system, Walker will provide you with everything needed to do the complete exhaust job. When you choose Walker accessories,...Makes installation quick and easyOptimal OE-style fit and quality$21.49 - $129.82
- Walker®Crankshaft Position SensorCrankshaft Position Sensor by Walker®. 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...Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle$21.76 - $135.85
- ACDelco®Genuine GM Parts™ Engine Oil Pressure Sensor AdapterGenuine GM Parts™ Engine Oil Pressure Sensor Adapter 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....Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle$27.50
- Dorman®TECHoice™ Camshaft Position Sensor ConnectorTECHoice™ Camshaft Position Sensor Connector by Dorman®. This engine camshaft position sensor connector is designed to match the appearance and function of the original hardware on specified applications. Made of quality materials, it...Direct replacement - this engine camshaft position sensor connector matches the appearance and function of the factory hardware on specified applicationsIdeal solution - this connector is a reliable replacement for an original part that is missing or has failed due to fatigue$14.42 - $116.18
- Mopar®Engine Oil Temperature SensorEngine Oil Temperature Sensor by Mopar®. Want your prized possession to look and perform the way it was designed to? Then top-of-the-line Mopar automotive parts and accessories are for you. Made using the latest manufacturing technology...Ideal solution to keep your vehicle in top shapeCrafted from premium-grade materials and the latest technology$6.56 - $222.40
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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