What are the symptoms of a faulty car electronic vacuum pump?
2 Answers
Brake vacuum pump failure symptoms include: excessively hard brake feel, abnormal noises from the vacuum pump, brake pedal not returning or slow return, etc. The following details these phenomena: Excessively hard brake feel: When applying the brakes, the braking feel is noticeably harder than normal, with each pedal stroke being very short, and may even push back against the driver's foot. Abnormal noises from the vacuum pump: Poor quality vacuum pumps may produce noticeable abnormal sounds, though these noises don't affect the vehicle's braking performance, they just create some additional noise. Brake pedal not returning or slow return: After depressing the brake pedal, the pedal neither rises back up nor provides any resistance.
My car's electronic vacuum pump failed before, making the brakes suddenly extremely hard to press, like stepping on a rock. Every time I needed to slow down, I had to use all my strength, which was really scary. There was also a constant buzzing sound after starting, like a mosquito flying around, which was super annoying. Later, I noticed the red brake warning light on the dashboard was on, and the car shook badly at idle, with no power when accelerating. A friend told me the vacuum pump is responsible for brake assist, and its failure directly affects safety. I immediately took it to the repair shop, where the mechanic replaced it with a new one, and now the car runs much smoother. Paying attention to these unusual signs while driving can help prevent major issues.
