How to Solve the Abnormal Noise in Classic Focus?
1 Answers
Common abnormal noises in Focus and their solutions are as follows: 1. Regarding the abnormal noise after cold start of Focus: After cold start, noise is generated in the engine area, the frequency of which is related to the engine speed. The noise basically disappears as the running time increases or the engine temperature rises. 2. Abnormal noise in the engine compartment after Focus starts: Most of the noise comes from the electronic power steering pump. Due to the design, the electronic power steering pump provides high oil pressure at low speeds and lower oil pressure above a certain speed. Therefore, the high-frequency noise of the steering pump is louder at idle, which is a normal phenomenon. 3. When the car is cold and idling, lifting the clutch pedal in neutral reveals noise, which disappears when the clutch is pressed. This may be caused by the gap between the spline sleeve on the clutch plate and the clutch plate's engagement position, or by the contact between the release bearing and the pressure plate. 4. Abnormal noise in Focus manual transmission cars when the clutch is half-engaged: After the friction surface of the clutch plate becomes smoother, the noise is caused by the vibration of the clutch plate during friction with the clutch pressure plate or flywheel.
