As the Baltic sound insulation on the outside is very good, so the car itself, some of the noise is relatively serious. The following content for your reference.
    1) uphill when the sound (friction sound, sound more sharp): the front suspension arm arm ring ring sound. The rubber sleeve for the hollow structure, after the deformation of the deformation after the sound, the front wheel uphill deformation when the most serious. Solution: Lubricate the sleeve.
    2) start to turn when the ring (reversing particularly obvious): front wheel bearing ring. Mainly occurred in a small amount of early 02 models. Because this part of the car drive shaft outer cage shorter, with the matching nut is hexagonal shape, installed after the tightness is not enough, resulting in loose bearings. Solution: replace the self-locking nut, if necessary, change the drive shaft.
    3) start or flame, reverse the road when the ring: gearbox bracket ring. Glue for the hollow structure, deformation occurs when the friction between each other, resulting in abnormal sound. In the above case, the engine and gearbox jitter is maximum. Solution: Lubricate or replace the stent.
    4) reversing brake pads: brake discs and discs. Generally this happens after the wet water, due to the increase in the metal content of the brake pads (performance, environmental requirements), while the handle brake, so between the plate and the plate will soon form a rust, step on the brake when the rust In the friction, causing abnormal sound; if the parking time is long, rust layer thickening, may not step on the brake when the rear wheel will ring.
    5) Four-wheel noise at high speed: Tire ringing POLO four-wheel bearing performance is very reliable, generally do not produce noise, tire pressure is too high too low will cause abnormal sound, while the other serious damage caused by noise. Solution: adjust the air pressure, replace the tire.
    6) Acceleration of the chassis ring (broken metal sound): three-way catalyst ring. Three-way catalytic converter in the middle of the soft connection to accelerate when the vibration, resulting in abnormal sound. Workaround: Replace the ternary catalyst.
    7) open air conditioning front ring (with wind): cooling motor ring. Cooling motor has high and low, high speed faster, normal. If the high-end operation is frequent, check the two fan states. Workaround: Replace the fan.
    8) open air conditioning front ring (whining): compressor ring. Just started or heavy load when there is a slight ring of normal, such as continuous failure. Solution: Compressor.
    9) before the start of the ring (the front of the engine): pump ring. The sound is sharper and rises with the speed. Workaround: Replace the pump.
    10) after the start of the ring (current sound): gasoline pump ring. If in a quiet environment, you listen carefully in the rear wheel, you will hear a small current sound, this is a normal phenomenon. If in the noisy environment or the car can clearly hear the rear ring, then the gasoline pump is certainly dirty, or gasoline filter plug. Solution: Clean or replace the petrol pump.
    11) open the door when the rear ring (current sound): gasoline pump ring. When you open the door, POLO already know that you want to start, so the pump began to work, and then you twist the key car on the. As long as the sound is not particularly large, normal.
    12) instrument panel ring: As the dashboard material expansion is relatively large, so hot days when it is easy to produce friction sound. Solution: dismantling the instrument table, the key parts posted special tape.
    13) after the shock block: sound smaller, crisp. Damping seat dust jacket can not sediment, sediment into the shock absorber seat after the dry grinding, resulting in sound. Workaround: Lubricate or replace (new state).
    14) Rear of the back: (similar to 13) due to the back of the back loosening caused by the ring, you can set off the back, adjust the lock position.
    15) gearbox ring (slightly gear ring): start idling ring, press the clutch pedal after the disappearance of open air conditioning is more obvious. Due to the large load, manufacturing and assembly of the error on the gearbox input shaft radial runout, resulting in transmission gear ring.
    16) Emergency throttle ring (crisp tick): the gasoline label is too low to cause the engine knock sound. Solution: Replace the high-grade gasoline.