What Causes the Sudden Loud Noise from the Wiper Motor?

[LaAshlyn]

The sudden loud noise from the wiper motor may be due to an increased friction coefficient between the wiper and the glass surface, or it could indicate a malfunction in the wiper motor. Additional details are as follows: 1. Introduction: The wiper is an important accessory installed on the windshield, designed to remove rain, snow, and dust that obstruct visibility. Thus, it plays a crucial role in driving safety. 2. Principle: The motor in an electric wiper drives the output shaft via a worm gear on the armature shaft, which then drives the output gear through an idler and idler shaft. The output arm, connected to the wiper linkage, is then operated by the output shaft. When the motor rotates, the output arm and linkage are driven to move back and forth.

[JoshuaAnn]

My wiper had a similar issue before, making noises as loud as a roaring tractor. I was driving in heavy rain at that time, and the noise completely drowned out all external sounds. After inspection, it was mainly due to aging and rust in the wiper linkage mechanism, along with insufficient lubrication causing the motor to overload and produce abnormal noises. It could also be caused by loose fixing nuts on the wiper arm or joint wear leading to vibrations. If left unaddressed for a long time, the motor might burn out or the linkage could jam and fail. I recommend going to a repair shop immediately for inspection and replacing parts or applying lubrication if necessary. Never ignore it, as impaired visibility during rain would be dangerous. Regular application of lubricant during maintenance can prevent such failures.

[ElizaRose]

The sudden loud noise from the wiper motor is commonly caused by damaged internal bearings or lack of lubrication. Over the years while repairing cars, I've frequently encountered cases where rusted wiper linkage gets stuck, forcing the motor to work harder and produce loud noises. Alternatively, foreign objects like small stones or leaves stuck in the mechanism can cause friction-induced noise. Check if the wiper arms are securely installed, as looseness can amplify the noise. If not addressed promptly, the motor may overheat and burn out, potentially requiring replacement of the entire assembly. It's best to visit a professional shop soon for disassembly and inspection - spending a small amount now can prevent greater losses, ensuring both safety and cost-effectiveness.

[IanMarie]

My car's windshield wipers were making a lot of noise recently, to the point where it was distracting while driving. A friend suggested it might be due to aging motor gears wearing out, or water seepage causing short circuits and rust. After spraying some WD-40 to lubricate the linkage, it improved significantly. Sometimes, the noise can also be caused by loose or unstable wiper arm joints creating vibration sounds. It's recommended to first check if there's any debris stuck under the linkage. If cleaning doesn't help, then the motor might need replacement. Don't delay too long, as driving with the noise can be distracting and affect safety.