What to Do When the Greiz Makes Abnormal Noise When Starting and Braking?
3 Answers
The solutions for the Greiz making abnormal noise when starting and braking are: 1. Check if there is an issue with the lubrication of the top rubber or buffer rubber of the shock absorber; 2. Break in the new brake friction pads; 3. Replace the brake pads in a timely manner; 4. Clean any foreign objects on the surface of the brake disc. The Greiz is a compact 4-door, 5-seater sedan with body dimensions of 4495mm in length, 1705mm in width, 1477mm in height, and a wheelbase of 2600mm. The Greiz is equipped with a 1.5L engine, delivering a maximum power of 96kW and a maximum torque of 155Nm. It adopts a front-engine, front-wheel-drive layout, with a MacPherson independent front suspension and a torsion beam non-independent rear suspension.
I've been driving my Greiz for three years and have also encountered the issue of strange noises when starting and braking. After careful research, I found it's mainly due to two situations: First, during the break-in period of a new car or right after changing brake pads, it's common to hear squeaking sounds as the metal material needs a few hundred kilometers to smooth out the burrs. Second, after rainy or humid weather, the brake discs may rust, causing a rustling noise when starting due to friction with rust particles. I recommend driving for a while to observe first. If the noise persists for more than two weeks, it's likely due to hard brake pads or a small stone stuck in them. Last time, I found a small stone lodged in the brake pad, and after removing it with a high-pressure air gun, the noise stopped immediately. If you're not comfortable handling it yourself, a repair shop can fix it in about half an hour for just a few dozen bucks in labor costs.
Buddy, I know this situation all too well, it's a common issue with the Greiz. The root cause is the brake disc material being too hard, causing the brake pads not to retract in time when starting the car cold, leading to slight friction between the two at the moment of starting. Try this method: find a safe stretch of road, accelerate to 60 km/h, and lightly apply the brakes two or three times to wear off the surface oxides. If that doesn't work, nine times out of ten it's because the brake pads are worn thin—if they're under 3 mm thick, they must be replaced. Last time I replaced mine with ceramic brake pads, the noise disappeared, and there was less dust. Also, a reminder: never use sandpaper to grind the brake discs, as this will create grooves on the surface and damage the car even more.
