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.

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    • (0 reviews)
      # sp1700
      Fuel Filter by Forecast®. Is your vehicle hard to start? Does its stumble and stall, and idle rough? Are you making more frequent visits to the pump? Your fuel system may need repair, but before you waste your time and gas running...
      High quality at an affordable priceExpertly made from premium materials
      $6.59 - $35.85
    • (0 reviews)
      # sp25710
      Fuel Pump Relay 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...
      OE quality parts from top original equipment and aftermarket manufacturersThe finest quality at a great price
      $22.65 - $170.52
    • (0 reviews)
      # sp25713
      Fuel Pump Wiring Harness by Genuine®. 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...
      High quality at an affordable priceExpertly made from premium materials
      $11.35 - $150.49
    • (0 reviews)
      # sp32294
      Fuel Rail Pressure Sensor by Merchant Automotive®. Designed utilizing the latest technology, this product by Merchant Automotive features premium quality and will perform better than advertised. Perfect for your vehicle and...
      Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle
      $61.65 - $479.77
    • (0 reviews)
      # sp101939
      Fuel Pump Wiring Harness by Replace®. Designed to meet the OE quality, perfect fit and your automotive needs, Fuel Pump Wiring Harness will make your ride more comfortable while the interaction with your vehicle becomes more...
      Same quality as OE for less moneyDesigned with the latest software and manufactured with modern tooling
      $7.85 - $20.31
    • (0 reviews)
      # sp96617
      Fuel Pump / Sending Unit Connector 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...
      High quality at an affordable priceExpertly made from premium materials
      $11.13 - $50.02
    • (0 reviews)
      # sp26206
      Fuel Pump Relay by Kaehler®. 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...
      High quality at an affordable priceExpertly made from premium materials
      $12.57 - $108.23
    • (0 reviews)
      # sp21399
      Fuel Pump Relay by Stribel®. 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...
      High quality at an affordable priceExpertly made from premium materials
      $36.09 - $56.77
    • (0 reviews)
      # sp98604
      Fuel Pump Relay by Vemo®. 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 an...
      High quality at an affordable priceExpertly made from premium materials
      $7.49 - $33.14
    • (0 reviews)
      # sp101922
      Throttle Position Sensor by Hitachi®. 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...
      High quality at an affordable priceExpertly made from premium materials
      $18.49 - $143.57
    • (0 reviews)
      # sp101986
      Throttle Position Sensor by Motorcraft®. 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
      $19.38 - $108.33
    • (0 reviews)
      # sp25265
      Throttle 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
      $27.30 - $56.26
    • (0 reviews)
      # mpn1968448
      Throttle Position Sensor by BBK®. The throttle position sensor monitors the position of the throttle valve and sends this information to the engine control computer. Don't trust this important function to a cheap off-shore...
      Monitors throttle valve position and provides input to engine control computerBuilt to OEM quality standards
      $49.99
    • (0 reviews)
      # mpn1968447
      Throttle Position Sensor by BBK®. The throttle position sensor monitors the position of the throttle valve and sends this information to the engine control computer. Don't trust this important function to a cheap off-shore...
      Monitors throttle valve position and provides input to engine control computerBuilt to OEM quality standards
      $49.99
    • (0 reviews)
      # mpn458001650
      Throttle Position Sensor by Blox Racing®. The throttle position sensor (TPS) is basically a potentiometer that provides a variable resistance dependent upon the position of the throttle. There are many different instances when one...
      High quality at an affordable priceExpertly made from premium materials
      $40.00
    • (0 reviews)
      # mpn458001653
      Throttle Position Sensor by Blox Racing®. The throttle position sensor (TPS) is basically a potentiometer that provides a variable resistance dependent upon the position of the throttle. There are many different instances when one...
      High quality at an affordable priceExpertly made from premium materials
      $60.00
    • (0 reviews)
      # mpn1589832263
      Throttle Position Sensor by Fast®. The throttle position sensor bolts to the throttle blade shaft and relays throttle opening/closing information to the system ECU. The TPS is constructed of high resistance material with a...
      High quality at an affordable priceExpertly made from premium materials
      $61.32
    • (0 reviews)
      # mpn1865720583
      Throttle Position Sensor by Chevrolet Performance®. 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...
      High quality at an affordable priceExpertly made from premium materials
      $51.46
    • (0 reviews)
      # mpn1682310
      Throttle Position Sensor by Professional Products®. This product is made of high-quality materials to serve you for years to come. Designed usig state-of-the-art technology and with customers in mind. It will meet your needs and...
      Highest Quality Throttle Body AvailablePrecision Engineered
      $33.56
    • (0 reviews)
      # sp6270
      Fuel System Electrical Connector by Dorman®. Dorman offers a comprehensive line of Fuel System Electrical Connectors for a wide range of applications. All the connectors are constructed of high-quality materials for long-lasting...
      Reduce repair cost - replace the part, not the assemblyDirect replacement for a proper fit every time
      $5.43 - $35.02
    • (0 reviews)
      # sp5774
      Fuel Injection Pressure Sensor by Delphi®. Is your vehicle hard to start? Does its stumble and stall, and idle rough? Are you making more frequent visits to the pump? Your fuel system may need repair, but before you waste your time...
      High quality at an affordable priceExpertly made from premium materials
      $217.17 - $271.25
    • (0 reviews)
      # sp101937
      Throttle 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)
      $21.06 - $86.66
    • (0 reviews)
      # sp101938
      Remanufactured Fuel Injector Control Module by Cardone®. Cardone remanufactured injector driver modules are engineered for quick installation and no comebacks. Each unit is engineered and tested to perform like new and sometimes...
      On-car vehicle validation testing ensures product fits and functions properlyOE components with high failure rates are 100% replaced
      $260.17 - $394.06
    • (0 reviews)
      # sp93764
      GM Original Equipment Carburetor Choke Heater 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...
      Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle
      $13.54 - $17.14
    • (0 reviews)
      # sp93765
      GM Original Equipment Flex Fuel Sensor 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
      $63.96 - $392.11
    • (0 reviews)
      # sp93768
      GM Original Equipment Fuel Filler Door Relay 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,...
      Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle
      $5.20 - $7.88
    • (0 reviews)
      # sp93792
      GM Original Equipment Fuel Pump Control Module Connector 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...
      Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle
      $26.07 - $53.94
    • (0 reviews)
      # sp93794
      GM Original Equipment Fuel Pump Cycle Control Module Connector by ACDelco®. Designed utilizing the latest technology, this product by ACDelco features premium quality and will perform better than advertised. Perfect for your...
      Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle
      $22.33 - $30.06
    • (0 reviews)
      # sp93802
      GM Original Equipment Fuel Pump Relay Connector 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...
      Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle
      $21.87 - $39.59
    • (0 reviews)
      # sp93805
      GM Original Equipment Fuel Tank Pressure Sensor Cover 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...
      Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle
      $2.73
    • (0 reviews)
      # mpn798898950
      GM Original Equipment™ Fuel Injection Cold Advance Solenoid Connector by ACDelco®. Connector Type: 1-Way Female. Designed utilizing the latest technology, this product by ACDelco features premium quality and will perform better...
      Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle
      $6.50
    • (0 reviews)
      # sp10546
      GM Original Equipment™ Fuel Injection Fuel Pressure Service Kit by ACDelco®. Designed utilizing the latest technology, this product by ACDelco features premium quality and will perform better than advertised. Perfect for your...
      Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle
      $5.82 - $28.98
    • (0 reviews)
      # sp10550
      GM Original Equipment™ Fuel Injection Fuel Rail Pressure Sensor by ACDelco®. Designed utilizing the latest technology, this product by ACDelco features premium quality and will perform better than advertised. Perfect for your...
      Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle
      $47.85 - $296.35
    • (0 reviews)
      # sp10575
      GM Original Equipment™ Fuel Level Sensor 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...
      Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle
      $26.89 - $179.73
    • (0 reviews)
      # sp27156
      GM Original Equipment™ Fuel Pressure Sensor 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,...
      Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle
      $21.06 - $205.73
    • (0 reviews)
      # sp10586
      GM Original Equipment™ Fuel Pump Connector 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,...
      Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle
      $8.79 - $62.69
    • (0 reviews)
      # sp10597
      GM Original Equipment™ Fuel Sender Connector 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,...
      Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle
      $3.47 - $42.05
    • (0 reviews)
      # sp10600
      GM Original Equipment™ Fuel Sensor Connector 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,...
      Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle
      $25.42
    • (0 reviews)
      # mpn4422674520
      GM Original Equipment™ Fuel Shut-Off Solenoid Connector by ACDelco®. Connector Type: 4-Way Male M/P 630. Color: Black. Designed utilizing the latest technology, this product by ACDelco features premium quality and will perform...
      Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle
      $32.11
    • (0 reviews)
      # sp10609
      GM Original Equipment™ Fuel Tank Connector 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,...
      Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle
      $12.44 - $41.70
    • (1 review)
      # sp10612
      GM Original Equipment™ Fuel Tank Pressure Sensor 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...
      Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle
      $29.45 - $127.06
    • (0 reviews)
      # sp10628
      GM Original Equipment™ Throttle Connector 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...
      Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle
      $27.94 - $54.25
    • (0 reviews)
      # sp10631
      GM Original Equipment™ Throttle Position Sensor by ACDelco®. Keep your Fuel and Ignition Systems working in sync with ACDelco GM OE Throttle Position (TP) Sensors, for most GM vehicles.
      ACDelco GM OE emission parts, fuel injectors and control modules earn the name ACDelco by being put through a variety of tests, often under extreme and unusual conditions.Electronically informs the PCM of the throttle valve angle.
      $28.74 - $143.80
    • (0 reviews)
      # mpn4422675125
      GM Original Equipment™ Water in Fuel Sensor 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,...
      Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle
      $19.23
    • (0 reviews)
      # mpn798878304
      GM Original Equipment™ Water in Fuel Sensor 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,...
      Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle
      $18.79
    • (0 reviews)
      # sp93826
      Professional Fuel Injection Connector by ACDelco®. Protect your Combustion System from contaminants with a high-quality ACDelco Professional Fuel Filter.
      Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle
      $20.59
    • (0 reviews)
      # sp93834
      Professional Fuel Pump and Engine Oil Pressure Indicator Switch by ACDelco®. Protect your Combustion System from contaminants with a high-quality ACDelco Professional Fuel Filter.
      Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle
      $14.64
    • (0 reviews)
      # sp93837
      Professional Fuel Tank Pressure Sensor Connector by ACDelco®. Protect your Combustion System from contaminants with a high-quality ACDelco Professional Fuel Filter.
      Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle
      $26.99 - $27.00
    • (0 reviews)
      # sp93838
      Professional Fuel Tank Selector Valve by ACDelco®. Protect your Combustion System from contaminants with a high-quality ACDelco Professional Fuel Filter.
      Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle
      $58.15 - $99.89
    • (0 reviews)
      # mpn767361946
      Professional™ Auto Shut Down Relay 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
      $9.74
    • (0 reviews)
      # mpn767362053
      Professional™ Auto Shut Down Relay 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
      $18.50
    • (0 reviews)
      # sp10542
      Professional™ Fuel Injector Connector 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
      $17.01 - $67.03
    • (0 reviews)
      # sp10651
      Professional™ Fuel Pump Cut-Off 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
      $84.79
    • (0 reviews)
      # mpn798898807
      Professional™ Fuel Pump Pressure Switch Connector by ACDelco®. Connector Type: 2 Terminal Female. Color: Pink. Protect your Combustion System from contaminants with a high-quality ACDelco Professional Fuel Filter.
      Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle
      $10.14
    • (0 reviews)
      # mpn898152602
      Professional™ Water In Fuel Indicator Relay by ACDelco®. Protect your Combustion System from contaminants with a high-quality ACDelco Professional Fuel Filter.
      Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle
      $8.55
    • (0 reviews)
      # sp5173
      Fuel Level Sensor by Airtex®. Airtex improves upon OE design and enhances performance and durability of each fuel delivery system component they build, so rest assured this fuel level sensor will provide accurate fuel gauge...
      Designed to meet or exceed OE specificationsCeramic sender card provides an accurate reading of a fuel level in a tank
      $24.36 - $212.77
    • (0 reviews)
      # sp5181
      Fuel Tank Pressure Sensor by Airtex®. As an integral part of the EVAP (Evaporative Emissions Control) system, the fuel tank pressure sensor monitors pressure in the fuel tank for emissions control purposes. Certified ISO TS16949,...
      Helps determine a leak in the evaporative systemMeets or exceeds OE specifications
      $18.56 - $44.75
    • (0 reviews)
      # sp103519
      Fuel Pressure Sensor by Bosch®. 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...
      High quality at an affordable priceExpertly made from premium materials
      $26.47 - $101.79
    • (0 reviews)
      # mpn3757008720
      Fuel Temperature Sensor by Bosch®. Is your vehicle hard to start? Does its stumble and stall, and idle rough? Are you making more frequent visits to the pump? Your fuel system may need repair, but before you waste your time and gas...
      $15.45
    • (0 reviews)
      # mpn44364779
      Accelerator Pedal Position Sensor Connector by Standard®. Connector Type: 6 Terminal Female. Color: Black. SMP’s vision is to be the leading independent supplier to the automotive aftermarket, providing the highest quality...
      High quality at an affordable priceExpertly made from premium materials
      $44.87




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    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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      How To Replace An In-Tank Fuel Sending Unit
      A Fuel tank sending unit is a term for the mechanical assembly inside your fuel tank which measures the level of liquid in the tank, then reports its findings to the...

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    Fuel Injection Sensors Reviews

    Average rating:  4.5  4.5 - 26 reviews
      /  Read All Fuel Sensors, Relays, Switches Reviews
    5 of 5
    Throttle Sensor Connector
    The product was exactly what I ordered. Fit perfect. Thank you.
    BPosted by BRUNILDA (Chicago, IL) / March 30, 2017
    1991 Mercury Grand Marquis
    Was this review helpful for you? Yes
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