What is the reason for increased fuel consumption after replacing the camshaft sensor?
2 Answers
Replacing the camshaft sensor may lead to increased fuel consumption due to potential changes in the ignition timing. Camshaft Sensor: The camshaft position sensor is a sensing device, also known as a synchronization signal sensor. It serves as a cylinder identification and positioning device, providing the ECU with camshaft position signals, which are the primary control signals for ignition. The function of the camshaft position sensor is to collect the position signals of the camshaft and input them into the ECU, enabling the ECU to identify the top dead center of cylinder compression. This allows for sequential fuel injection control, ignition timing control, and knock control. Ignition Advance Angle: The angle through which the crankshaft turns from the start of ignition until the piston reaches the top dead center.
As someone who frequently deals with car maintenance, I've seen many cases where fuel consumption increases after replacing the camshaft sensor. This is often due to improper installation of the new sensor or a model mismatch, causing the engine computer to misread the camshaft position signal. Signal deviation can delay ignition timing, leading to incomplete fuel combustion and increased fuel consumption. Sometimes, accidentally touching components like the mass airflow sensor or oxygen sensor during installation can disrupt the entire system. It's advisable to promptly return to the repair shop for a recheck to see if the connector is loose or the sensor itself is faulty, and also inquire whether the computer needs to be reset. Don't underestimate this issue—higher fuel consumption not only costs more money but may also cause emissions to exceed standards, affecting environmental protection. During routine maintenance, don't overlook these small components; regular checks can save a lot of trouble.
