What are the frequently asked questions about Jietu?
1. The air-conditioning box vibrates "buzzing, buzzing", and the vibration increases when refueling
After passing through the expansion valve, the refrigerant is divided into four tubes and enters the evaporation box, and the distance between these four tubes If it is too close, the tubes will vibrate and make a sound when the refrigerant flows through them. If the four tubes are separated, the sound will disappear.
2. The steering gear makes a hissing sound
A slight hissing sound is normal and does not affect the steering performance unless it is particularly obvious. But this sound has nothing to do with performance. It occurs when the steering wheel is turned to the extreme position or slowly turned in place.
3. The idle speed is unstable and then normal again after one minute
Check the spark plug and clean the fuel injector and throttle valve.
4. The trunk indicator light is always on
If it is always on, it is a fault and needs to be inspected and repaired. Maintenance requires on-site inspection to determine the solution. Generally speaking, after The trunk switch assembly is more likely to malfunction. Abnormal opening and closing positions of the switch will cause the light to stay on. On the other hand, the trunk light wiring harness does not pass through the switch and is grounded before the switch, which will also cause the light to stay on. It is recommended that the above two items be carefully inspected and repaired.
5. There is water under the driver's seat after it rains
It should be that the drainage hole in the front of the windshield has not been cleaned for a long time and is blocked, causing rainwater to flow into the cab.
6. Replace the shock absorber buffer block
The failure rate of the Jetta sedan's shock absorber system is relatively high. During the driving of the car, due to road conditions, the pressure bearings of Jetta (Parameters | Inquiry) cars often experience cracking and damage. In severe cases, the wheel positioning may be misaligned and the control performance may be reduced. If the rear buffer block is damaged and the vehicle is driven on a bumpy road, the ground clearance of the vehicle will be too small for an instant, possibly causing the vehicle to fall off.
7. What will happen if the old Jetta ball cage is not installed in place?
There will be abnormal noises, and in severe cases, the vehicle will not move and lose power.
8. The new Jetta is misaligned behind a passenger. The heavier the person, the worse the direction.
Do a four-wheel alignment first. If there is no problem with the four-wheel alignment, it may be the rear shock absorber and There is a problem with the spring, consider replacing it.
9. For the new Jetta 1.6 automatic transmission, after starting the car, there is no gear display on the instrument panel, and a wrench will come out.
Depending on your situation, the gear fuse may be blown, which is an automatic transmission. If the box is faulty, it is recommended to go to the repair shop for inspection and repair.
10. On the 2008 Jetta, the left half-shaft oil seal was recently replaced. I feel that the direction is deviated to the right. After two four-wheel alignments, it is still deviating to the right.
There are many reasons for the deviation. If If the four-wheel alignment data is correct, focus on checking whether the tire wear is abnormal and whether the rubber sleeves of the suspension system are loose. It is recommended to replace the tires left and right to see if the direction is deviated to the left.
11. When cleaning the throttle valve of the old Jetta, organic oil was found
This is caused by damage to the waste gas valve. Just replace the waste gas valve.
12. Why does the radiator fan of the 2001 Jetta model keep turning?
There should be a problem with the vehicle's temperature control switch, causing the fan to keep turning. Just replace it with a new temperature control switch. , the temperature control switch is located on the side of the water tank.
13. For the 2004 Jetta, what is the normal working pressure of the oil pump?
The normal pressure is between 3bar and 3.5bar.
14. There is a noise when the clutch is pressed on the new Jetta
If the clutch is pressed and the sound is a creaking sound and the sound is heard every time the clutch is pressed, the pressure plate is broken and needs to be replaced. If the clutch is pressed, the pressure plate is broken. There is a continuous sound from the clutch and the sound stops when the clutch is loosened. The release bearing is broken and needs to be replaced.
15. In the old Jetta, sometimes the EPC light comes on when the car is started
Generally this is the case. This car is prone to a dirty throttle valve causing the EPC light to turn on. Sometimes the brake light does not turn on, which can also cause the light to turn on.
16. Slow refueling is OK, but urgent refueling is not possible. The engine is stuffy
In this case, the fuel pump is generally insufficient and the three-way catalytic converter is clogged. Check whether the gasoline filter element is If it's clogged, use a gasoline pressure gauge to test whether the gasoline pressure is normal.
17. There is no warm air in the car, only cold air.
Check whether the heating switch of the small water tank is turned on. If it is turned on, it may be that the hot and cold flaps of the air duct have fallen off or the scale of the small water tank is too thick.
18. In the 2009 Jetta, the engine fault light came on, indicating that the cylinder mixture is too rich
There are many reasons for this, such as the water temperature sensor is inaccurate, the spark plug gap is too large, the cylinder pressure is low, and the injection The atomization of the oil nozzle is not good and the intake pressure sensor is inaccurate. It is recommended to check it one by one.
@2019