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Reference Sensor Guides





Fuel doesn't flow by itself. To harness its power, your car's fuel delivery system has to be in good working condition. Most owners think this system consists of nothing more than the fuel pump.Well, there's more to the fuel delivery system than meets the eye. If your car's engine uses an electronic fuel injection (EFI) system, expect your injectors to stop pumping once a little something called the reference sensor starts failing. That's because this sensor is in charge of determining exactly when the injectors should pump fuel and gesturing the ignition coil when to fire. Too, it keeps the fuel delivery system working diligently at a constant rhythm.Failure of this part, however, can paralyze the whole fuel delivery system altogether. If your car's ignition system has been acting up and causing slow engine startups lately, then you may need to replace this reference sensor. Don't fret, though.Fortunately for you, Carparts has a wide selection of reference sensors for you to choose from.


• Offers higher heat resistance

• Designed to outlast stock sensors

• Fits any engine type for convenient installation

Easy Steps for Reference Sensor Replacement

A reference sensor is a logic module that your engine control unit (ECU) uses to determine the position of the crankshaft and at what speed the engine is running. Unfortunately, this vital component can fail due to corrosion or exposure to chemicals or. Damage to this sensor will result in rough idling, misfired cylinders, difficulty in starting your engine, and poor engine performance. Lucky for you, installing a new reference sensor is all you need to do in order restore your engine's performance. You only need a few basic tools to remove your busted sensor and install a new one. This DIY job is sure to save you on a trip to the mechanic as well as some extra bucks. So follow the steps listed down below and you'll have your engine working like a charm in no time.

Difficulty level: Easy

What you'll need:

  • Protective gloves and glasses
  • Lamp or good lighting
  • Socket and ratchet
  • Replacement reference sensor

Step 1: Make sure you're wearing safety goggle and gloves before starting your DIY job. Doing so will guarantee a smooth and safe installation process. Also be sure to do your repairs in a well-lit area or with the help of a lamp.

Step 2: Lift your hood and prop it open. Disconnect the negative battery lead.

Step 3: Disconnect the speed and/or reference sensor connector located at the back of the intake manifold.

Step 4: Remove the sensor retaining bolt using a socket and ratchet. Bolts may come in various sizes, but make sure to remove all of them.

Step 5: Twist the sensor then pull it out.

Step 6: Identify the wiring harness and mounting bracket for your new sensor.

Step 7: Install your new sensor with its mounted washer.

Step 8: Tighten the washer then secure the sensor in place with a mounting bracket.

Step 9: Return bolts.

Step 10: Reconnect the negative battery lead.

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