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.

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    • (0 reviews)
      # sp12704
      Oil Tank Level Sender 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
      $32.50 - $60.39
    • (0 reviews)
      # sp23606
      Replacement Engine Crankshaft and Components by Omix-ADA®. The engine is the heart of your Jeep, but with many years and miles it may not be beating as strong as it once did. If you're hearing strange noises from under the hood,...
      Performs according to OEM specificationsMeets or exceeds OEM quality standards
      $17.33 - $38.94
    • (0 reviews)
      # sp26309
      Oils, Fluids, Lubricants by Meyle®. When you’re low on oil, coolant or some other fluid, you may be tempted to just run down to the local auto parts chain store. But before you waste your time and gas only to find high prices and...
      $3.75 - $399.06
    • (0 reviews)
      # sp26540
      Oils, Fluids, Lubricants by MTC®. When you’re low on oil, coolant or some other fluid, you may be tempted to just run down to the local auto parts chain store. But before you waste your time and gas only to find high prices and...
      $1.66 - $337.73
    • (0 reviews)
      # sp6680
      Oil Pressure Switch Connector by Dorman®. Dorman offers a comprehensive line of Oil Pressure Switch Connectors for a wide range of applications. All the connectors are constructed of high-quality materials for long-lasting durability.
      Reduce repair cost - replace the part, not the assemblyDirect replacement for a proper fit every time
      $16.09 - $23.20
    • (0 reviews)
      # sp4121
      Camshaft Position Sensor by Dorman®. Engine Camshaft Position Sensors are used by the engine control module to synchronize the pulsing of sequential fuel injectors so they match the firing order of the engine. Dorman’s Engine...
      Sensor electronics sealed to resist fluid damage and corrosionDurable plastic constructed
      $13.61 - $119.95
    • (0 reviews)
      # sp4122
      Crankshaft Position Sensor by Dorman®. Engine Crankshaft Position Sensors measure crankshaft location to detect misfire and control engine timing. Dorman’s Engine Crankshaft Position Sensors are constructed of high quality...
      Direct replacement for a proper fitEasy to install
      $10.28 - $107.95
    • (0 reviews)
      # sp6867
      Electromagnetic Variable Valve Timing Solenoid by Dorman®. Dorman’s Engine Variable Timing Solenoid is durably engineered for years of effective performance. Replacement restores fuel efficiency and returns your vehicle to normal...
      Conveniently packaged with the installation gasket (where applicable)Direct replacement for a proper fit every time
      $18.03 - $466.45
    • (0 reviews)
      # sp6878
      Variable Timing Camshaft Gear by Dorman®. Engineered from durable steel and conveniently packaged with the bolt that attaches the cam shaft phaser to the cam shaft, Dorman’s Engine Variable Valve Timing Sprocket adjusts the...
      Replacement stops ticking noiseDirect replacement for a proper fit every time
      $266.95
    • (0 reviews)
      # sp25364
      Turbocharger Speed Sensor by Dorman®. Prevent improper turbocharger speed readings and reduced engine performance with Dorman's Turbocharger Speed Sensor. This essential replacement part helps to prevent potential damage to the...
      Replacement restores drivability and proper engine performanceConstructed of plastic copper and metal material
      $135.95 - $259.95
    • (0 reviews)
      # sp11857
      Professional™ Powertrain Control Module by ACDelco®. An ACDelco GM Original Equipment Remanufactured Engine Control Module is a GM-recommended replacement for your vehicle’s original component. It regulates various parts of...
      Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle
      $97.19 - $376.93
    • (0 reviews)
      # sp11740
      GM Original Equipment™ Engine Control Module by ACDelco®. An ACDelco GM Original Equipment Engine Control Module is a GM-recommended replacement for your vehicle’s original component. It regulates various parts of your...
      Dictates the operation of your vehicle's vital systems, which is critical to the performance of your vehicleGM-recommended replacement part for your GM vehicle's original factory component
      $40.07 - $1,042.61
    • (0 reviews)
      # sp11833
      GM Original Equipment™ Turbocharger Components by ACDelco®. Designed utilizing the latest technology, this GM Original Equipment Turbocharger by ACDelco features premium quality and will perform better than advertised. Perfect...
      Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle
      $14.31 - $129.59
    • (0 reviews)
      # sp27054
      Fleetrunner Heavy Duty V-Ribbed Serpentine Belt by ACDelco®. Designed utilizing the latest technology, this Fleetrunner Heavy Duty V-Ribbed Serpentine Belt by ACDelco features premium quality and will perform better than...
      Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle
      $30.18 - $96.86
    • (9 reviews)
      # sp6225
      Replacement Engine Control Module by Cardone®. 100% resolder of critical components ensures superior electrical connections, no intermittent failures and longer product life. On-car vehicle validation routines ensure that modules...
      The finest quality at a great priceWe carry everything needed to complete the job
      $54.50 - $1,005.74
    • (1 review)
      # sp6423
      Camshaft Position Sensor by Beck Arnley®. For one hundred years, Beck/Arnley has been providing premium OE quality parts for vehicles. Beginning with motorcycle parts in 1914 and transitioning to import vehicles in the 1950’s,...
      OE quality products from top original equipmentTop quality materials
      $20.97 - $669.39
    • (1 review)
      # sp9428
      Crankshaft Position Sensor by Beck Arnley®. For one hundred years, Beck/Arnley has been providing premium OE quality parts for vehicles. Beginning with motorcycle parts in 1914 and transitioning to import vehicles in the 1950’s,...
      OE quality products from top original equipmentTop quality materials
      $20.75 - $792.72
    • (0 reviews)
      # sp9431
      Turbocharger Boost Sensor by Beck Arnley®. For one hundred years, Beck/Arnley has been providing premium OE quality parts for vehicles. Beginning with motorcycle parts in 1914 and transitioning to import vehicles in the 1950’s,...
      OE quality products from top original equipmentTop quality materials
      $34.86 - $394.96
    • (0 reviews)
      # sp27725
      Cylinder Head Temperature Sensor by Beck Arnley®. For one hundred years, Beck/Arnley has been providing premium OE quality parts for vehicles. Beginning with motorcycle parts in 1914 and transitioning to import vehicles in the...
      OE quality products from top original equipmentTop quality materials
      $23.62 - $28.37
    • (0 reviews)
      # sp28164
      Tru-Tech Engine Cylinder Head Temperature Sensor by Standard®. 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 running...
      OE quality parts from top original equipment and aftermarket manufacturersFast shipping; 1-2 day delivery time regardless of where you’re located
      $13.92 - $78.96
    • (0 reviews)
      # sp28123
      Camshaft Position Sensor by Standard®. 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 running out to the auto parts...
      OE quality parts from top original equipment and aftermarket manufacturersFast shipping; 1-2 day delivery time regardless of where you’re located
      $15.25 - $524.46
    • (0 reviews)
      # sp25884
      Control Unit by Genuine®. When you need a headlight bulb or a stop light switch, you may be tempted to just run down to the local auto parts chain store. But before you waste your time and gas only to find high prices and poor...
      $247.87 - $463.37
    • (0 reviews)
      # sp25955
      Oil Pressure Sender by Genuine®. When you need a headlight bulb or a stop light switch, you may be tempted to just run down to the local auto parts chain store. But before you waste your time and gas only to find high prices and...
      $32.52 - $213.76
    • (0 reviews)
      # sp25973
      Oil Temperature Sender by Genuine®. When you need a headlight bulb or a stop light switch, you may be tempted to just run down to the local auto parts chain store. But before you waste your time and gas only to find high prices and...
      $60.18 - $106.81
    • (0 reviews)
      # sp4981
      Engine Camshaft Position Sensor by Auto 7®. Over the lifespan of your vehicle your engine's parts can become worn and in need of replacement. This can cause serious problems including power and fuel economy loss. Auto 7 has the...
      Original equipment quality parts for Hyundai, KIA and GM Daewoo vehicles without the original equipment priceAll parts made where the vehicles are made, South Korea
      $28.19 - $100.19
    • (0 reviews)
      # sp4982
      Engine Crankshaft Position Sensor by Auto 7®. Over the lifespan of your vehicle your engine's parts can become worn and in need of replacement. This can cause serious problems including power and fuel economy loss. Auto 7 has the...
      Original equipment quality parts for Hyundai, KIA and GM Daewoo vehicles without the original equipment priceAll parts made where the vehicles are made, South Korea
      $28.67 - $94.13
    • (0 reviews)
      # sp16431
      Oil Level 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
      $34.72
    • (0 reviews)
      # sp16435
      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
      $3.05 - $26.13
    • (0 reviews)
      # sp16447
      Engine Oil Temperature 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
      $7.24 - $24.12
    • (0 reviews)
      # sp24335
      Oil Pressure Sender by AFTERMARKET®. When you need a headlight bulb or a stop light switch, you may be tempted to just run down to the local auto parts chain store. But before you waste your time and gas only to find high prices...
      $26.78 - $37.33
    • (0 reviews)
      # sp19238
      by Aisan® -Engine Parts. 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...
      $64.50 - $103.02
    • (0 reviews)
      # sp12697
      Oil 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...
      Replaces your worn out factory engine part to restore vehicle's performanceConstructed from top notch materials for ultimate strength and reliability
      $3.98 - $31.17
    • (0 reviews)
      # sp12891
      Engine Camshaft Position Sensor O-ring 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...
      Replaces your worn out factory engine part to restore vehicle's performanceConstructed from top notch materials for ultimate strength and reliability
      $1.01 - $50.30
    • (0 reviews)
      # sp19315
      Engine Parts by Bougicord®. 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...
      $41.20 - $51.05
    • (1 review)
      # sp5759
      Engine Camshaft 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...
      Extensive coverageApplications for ignition (camshaft and crankshaft position and speed), transmission (vehicle or engine speed) and anti-lock braking systems (wheel speed)
      $22.38 - $81.73
    • (0 reviews)
      # sp5760
      Engine 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...
      Extensive coverageApplications for ignition (camshaft and crankshaft position and speed), transmission (vehicle or engine speed) and anti-lock braking systems (wheel speed)
      $20.94 - $91.08
    • (0 reviews)
      # sp25530
      Oil Pressure Sender by FEBI®. When you need a headlight bulb or a stop light switch, you may be tempted to just run down to the local auto parts chain store. But before you waste your time and gas only to find high prices and poor...
      $7.56 - $23.49
    • (0 reviews)
      # sp25559
      Engine Parts by Forecast®. 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...
      $40.17 - $235.29
    • (1 review)
      # sp5071
      Engine Camshaft Position Sensor by Hitachi®. By determining camshaft position, this sensor allows the computer to maintain effective fuel injection timing and ignition timing control for optimal engine performance. It is built to...
      Meets or exceeds OE specificationsEngineered for dependable and long-lasting performance
      $53.19 - $53.20
    • (0 reviews)
      # sp5072
      Engine Crankshaft Position Sensor by Hitachi®. By monitoring crankshaft rotation speed and position, this sensor allows the computer to maintain effective fuel injection timing and ignition timing control for optimal engine...
      Meets or exceeds OE specificationsEngineered for dependable and long-lasting performance
      $29.42 - $85.80
    • (0 reviews)
      # sp5500
      Camshaft Position Sensor by Mitsubishi Electric Automotive®. 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...
      $41.76 - $730.78
    • (0 reviews)
      # sp22712
      Oil Pressure Sender by MOPAR®. When you need a headlight bulb or a stop light switch, you may be tempted to just run down to the local auto parts chain store. But before you waste your time and gas only to find high prices and poor...
      $37.49 - $68.24
    • (0 reviews)
      # sp26471
      Engine Camshaft Position Sensor by Motorcraft®. Motorcraft engine camshaft position sensor are designed for maximum performance and durability.
      Direct OEM replacementMeets strict Ford Motor Company standards
      $10.07 - $66.70
    • (0 reviews)
      # sp26481
      Wastegate Vacuum Actuators And Solenoids Connector by Motorcraft®. Motorcraft wastegate vacuum actuators and solenoids connectorare designed for maximum performance and durability.
      Direct OEM replacementMeets strict Ford Motor Company standards
      $8.56 - $39.25
    • (0 reviews)
      # sp26584
      Oil Pressure Sender by NTC®. When you need a headlight bulb or a stop light switch, you may be tempted to just run down to the local auto parts chain store. But before you waste your time and gas only to find high prices and poor...
      $10.48 - $28.98
    • (0 reviews)
      # sp1366
      Crankshaft Positioning Sensor by Omix-Ada®. As its name implies, the Crankshaft Position Sensor detects the position and rotational speed of the crankshaft and sends this information via voltage signal to the engine control...
      $14.62 - $168.99
    • (0 reviews)
      # sp1378
      Camshaft Gear by Omix-Ada®. The crankshaft drives the camshaft and valvetrain via timing sprockets and chain or timing gears. The valves are timed to open and close at precise intervals, and this timing can go astray when...
      $50.74
    • (0 reviews)
      # sp1379
      Crankshaft Gear by Omix-Ada®. The crankshaft drives the camshaft and valvetrain via timing sprockets and chain or timing gears. The valves are timed to open and close at precise intervals, and this timing can go astray when...
      $14.62 - $168.99
    • (0 reviews)
      # sp26629
      Oils, Fluids, Lubricants by Original Equipment®. When you’re low on oil, coolant or some other fluid, you may be tempted to just run down to the local auto parts chain store. But before you waste your time and gas only to find...
      $1.18 - $1,018.79
    • (1 review)
      # sp26663
      Engine Parts by Prenco®. 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...
      $30.81 - $72.06
    • (0 reviews)
      # sp26731
      Technology Engine Parts by Richporter®. 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...
      $23.91 - $282.00
    • (0 reviews)
      # sp8330
      Engine Camshaft Position Sensor by Spectra Premium®. Spectra Premium Camshaft Position Sensors are designed and produced under a strict TS16949 quality control process.
      All sensors are durability tested at 100 cycles of thermal shock (-50 to 300° F), to ensure reliability from extreme vibration24 hours salt spray test - to ensure sensors provide high corrosion resistance
      $10.08 - $193.82
    • (0 reviews)
      # sp8333
      Engine Crankshaft Position Sensor by Spectra Premium®. Spectra Premium Crankshaft Position Sensors are designed and produced under a strict TS16949 quality control process.
      All sensors are durability tested at 100 cycles of thermal shock (-50 to 300° F), to ensure reliability from extreme vibration24 hours salt spray test - to ensure sensors provide high corrosion resistance
      $10.81 - $254.45
    • (0 reviews)
      # sp26915
      Engine Parts by VDO®. 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 running...
      $81.94 - $315.16
    • (0 reviews)
      # sp26917
      Oil Pressure Sender by VDO®. When you need a headlight bulb or a stop light switch, you may be tempted to just run down to the local auto parts chain store. But before you waste your time and gas only to find high prices and poor...
      $70.97 - $103.76
    • (0 reviews)
      # sp26948
      Oil Pressure Sender by Vemo®. When you need a headlight bulb or a stop light switch, you may be tempted to just run down to the local auto parts chain store. But before you waste your time and gas only to find high prices and poor...
      $9.91 - $233.06
    • (0 reviews)
      # sp5672
      Camshaft Sensor O-ring by Victor Reinz®. When you’re low on oil, coolant or some other fluid, you may be tempted to just run down to the local auto parts chain store. But before you waste your time and gas only to find high...
      $2.98
    • (0 reviews)
      # sp26994
      Engine Parts by World Source One®. 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...
      $27.66 - $65.35
    • (0 reviews)
      # sp28161
      TechSmart Turbocharger Components by Standard®. SMP’s vision is to be the leading independent supplier to the automotive aftermarket, providing the highest quality products, competitive prices and the highest reputation for...
      OE quality parts from top original equipment and aftermarket manufacturersFast shipping; 1-2 day delivery time regardless of where you’re located
      $25.71 - $77.36
    • (0 reviews)
      # sp16051
      Crankshaft 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
      $11.17 - $56.62




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    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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    • Performance Engine Parts
      Performing a Basic Engine Tune Up
      This article will guide you through a generic tune up on most any car or light duty gasoline-powered vehicle built within the last 20 years or so. We will presume that you are tuning up your engine because it has reached the mileage or time point to do so, and that you are NOT performing a tune up to cure an engine performance defect. We make this distinction because not all running/performance issues will be solved via a simple tune up.

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    Engine Sensors, Relays, Switches Reviews

    Average rating:  4.5  4.6 - 16 reviews
    Read All Engine Sensors, Relays, Switches Reviews
    3.5 of 5
    Beware This Item Did Not Fit
    This is the same exact sensor as the driver side sensor and therefore it did not fit properly, the passenger side sensor is not suppose to have the angled connector but rather a straight one. I bought both the passenger and driver side sensors and they were both the same exact item, the driver fit but the driver did not.
    FPosted by Frank (Albuquerque, NM) /
    2006 Infiniti G35
    Was this review helpful for you? Yes
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