Where is the crankshaft position sensor for the Excelle 1.5?
2 Answers
The crankshaft position sensor for the Excelle 1.5 is located near the crankshaft pulley. The working principle of the crankshaft position sensor is to provide the ignition timing (ignition advance angle) and confirm the signal of the crankshaft position, which is used to detect the top dead center of the piston, the crankshaft angle, and the engine speed. The function of the crankshaft position sensor is to determine the position of the crankshaft, i.e., the angle of the crankshaft and the engine speed. Taking the Excelle 2015 1.5L Manual Classic as an example, the dimensions of this car are 4515 mm in length, 1725 mm in width, and 1445 mm in height, with a wheelbase of 2600 mm, a curb weight of 1210 kg, and a body structure of a 4-door, 5-seater sedan.
When working on the Buick Excelle 1.5L engine, I've encountered several crankshaft position sensor issues. It's typically installed at the front of the engine, near the timing cover or below the crankshaft pulley. The location is somewhat concealed, requiring removal of the fan or protective cover for access. This small component sends crankshaft speed signals to the ECU - if it's misaligned or dirty, the car may experience hard starting or shaking. Having replaced it multiple times myself, I recommend disconnecting the battery before maintenance to prevent short circuits, and ensuring clean, rust-free connectors. Regular engine area cleaning can prevent dirt buildup failures and extend component lifespan. The exact position may vary slightly by model year, but it's generally located in the front lower section - use diagnostic tools to scan error codes for precise identification before proceeding.
