Is It Necessary to Replace the Generator if It Makes Abnormal Noises?
1 Answers
Abnormal noises from the generator may not necessarily originate from the generator itself; they could be caused by the belt or the tensioner pulley. If the noise is from the belt or tensioner pulley, replacing the belt or tensioner pulley may suffice. However, if the abnormal noise is due to a malfunction in the generator, then replacing the generator becomes necessary. The reasons for abnormal noises in a car generator are as follows: 1. Loose Generator Belt: When the belt is loose, there will be relative movement between the belt and the pulley, producing a distinctive squealing noise. This noise often occurs when starting the vehicle or when using high-load electrical components like headlights, accompanied by a burning rubber smell in the engine compartment. If abnormal noise is heard when starting the vehicle, spraying a small amount of water on the generator pulley can help diagnose the issue. If the noise disappears, it is likely caused by the belt. 2. Loose or Insufficiently Lubricated Bearings: This type of noise manifests as a metallic grinding sound or a continuous swishing sound. To check, loosen the belt and rotate the generator pulley separately to see if there is any looseness or abnormal noise. If the issue lies with the generator, it must be replaced or repaired.
