How to Change a Cam Position Sensor in a Mitsubishi Lancer

Written by cayden conor
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The camshaft position sensor on the Mitsubishi Lancer feeds a signal, via voltage, to the computer control module. The computer uses the signal to determine the No. 1 cylinder's position on its power stroke. The computer then uses that information to determine when and how long to fire the fuel injectors. If the camshaft sensor malfunctions, the vehicle will run poorly at best, and may not run at all. If the camshaft sensor malfunctions while the engine is running, the computer throws itself into "limp home" mode, which allows you to get the vehicle home or to a repair facility.

Skill level:
Moderately Easy

Things you need

  • Set of wrenches
  • Set of sockets

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  1. 1

    Disconnect the negative battery cable and set it aside, ensuring that it does not touch metal. Unplug the wiring harness connector from the camshaft sensor, which is located near the top front of the engine.

  2. 2

    Remove the retaining bolt and pull the sensor off the engine.

  3. 3

    Install the new sensor and tighten the retaining bolt firmly. Do not over-tighten the bolt, as you could damage the sensor. Plug in the camshaft sensor's wiring harness connector. Reattach the negative battery cable.

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