Where is the Crankshaft Position Sensor Installed?
2 Answers
The crankshaft sensor is mainly installed in the distributor. The following are the main installation locations: 1. Magnetic Induction Type: The magnetic induction speed sensor and crankshaft position sensor are installed in the distributor in upper and lower layers. The rotor signal disc of the magnetic induction speed sensor and crankshaft position sensor can also be installed on the crankshaft or camshaft. 2. Hall Effect Type: The Hall effect speed sensor and crankshaft position sensor are signal generators that utilize the Hall effect. The Hall signal generator is installed in the distributor, coaxial with the distributor rotor, and consists of an encapsulated Hall chip and a permanent magnet fixed as a whole on the distributor disc. 3. Photoelectric Type: The photoelectric crankshaft position sensor is generally installed in the distributor and consists of a signal generator and a signal disc with light holes.
The crankshaft position sensor is usually hidden near the crankshaft rotating shaft of the engine. The most common location is behind the crankshaft pulley, close to the timing cover. After removing the pulley cover, you can see its probe facing the gear ring. Some vehicles install it on the flywheel housing at the rear end of the engine, allowing it to directly read the signal teeth on the flywheel. I've worked on many cars—German cars prefer the rear position, while Japanese cars often use front-mounted installation. During installation, special attention must be paid to gap control. If it's too close, it may hit the gear ring; if too far, it won't detect the signal. This gap is typically around 0.3-1 mm. Many sensors come with a positioning sleeve, so just tighten it into place.
