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60 Vehicle Regular Fault and Solution Part 6

Nov 12, 2021

51. When the turn signal lamp is on, the flashing frequency is faster than usual

Fault determination: true fault.

Cause analysis: after moving the handle of the turn signal, the turn signal indicator on the instrument panel flashes faster than usual, which is a fault. Generally, it is caused by the change of line resistance after the steering bulb on one side is broken.

Solution: go to the repair shop for replacement and repair in time.

52. The engine speed does not change when the vehicle air conditioner is turned on

Fault determination: false fault.

Cause analysis: when the air conditioner is turned on in general vehicles, the engine speed is increased, which is to meet the load requirements of the air conditioning compressor and maintain the stable idle speed of the engine. However, many new vehicles are equipped with engines that do not increase the engine speed when the air conditioner is turned on, but rely on increasing the injection time of the engine injector to keep the engine idle stable. Therefore, if the engine does not speed up when the air conditioner is turned on, it is not necessarily a fault.

53. The engine stops when shifting gears

Fault determination: true fault.

Cause analysis and solution: when the idle stop valve is shifting during travel, if the operation is standardized and the flameout does not occur due to too high gear, the following problems need to be checked:

1. Check whether the idle speed is stable and low. If the idle speed is unstable or low, just adjust the idle speed to the normal speed. Also tighten the idle stop valve and plug it tightly.

2. If the idle speed is normal, the oil-gas separator may be blocked, and it is necessary to clean the oil-gas separator in a professional repair station.

54. The air volume at the air outlet of the air conditioner is small

Fault determination: maintenance fault.

Cause analysis: with the use of the vehicle, the air volume at the air outlet inside the vehicle will gradually decrease at the same fan speed, and the cooling effect will also be weakened. Generally, this is because many new vehicles are equipped with air conditioning filters. The purpose of installation is to keep the interior of the vehicle clean, which also keeps the air conditioning evaporator clean and obtain the best refrigeration effect.

Solution: replace the filter with a new one.

55. The rear door of the vehicle cannot be opened from the inside

Fault determination: false fault.

Cause analysis: at present, children's locks are generally installed at the rear door of vehicles to prevent children in the rear seat from opening the door due to misoperation and safety accidents. When cleaning the vehicle, many people moved the handle of the child lock because they didn't pay attention, so the passengers in the back seat couldn't open the door from the inside. This is not a fault, just from

Just open the door outside the vehicle, and then move the handle of the child lock to the open position.

56. Sometimes the door cannot be opened in the early morning of winter

Fault determination: false fault.

Cause analysis: when washing the car in winter, the door of the vehicle placed in the open air often can not be opened. This is not a fault, but because the residual water after washing the car remains on the sealant strip of the door and causes adhesion after the water freezes. If the adhesion is not very serious, it can be opened by forcibly opening the door. If the adhesion is very serious, forcibly opening the door will damage the sealant strip of the door.

57. In winter morning, sometimes the door key cannot rotate

Fault determination: false fault.

Cause analysis: This is not a fault. It is caused by the residual water entering the key hole after washing the car. When the key is inserted into the lock hole, the locking mechanism inside cannot spring up and the key cannot be turned. At this time, do not screw it vigorously, otherwise the key will be damaged or deformed and cannot be used. The door shall be opened by using the remote control or heating the door lock.

58. Automatic transmission vehicles cannot move the gear lever without stepping on the brake pedal

Fault determination: false fault.

Cause analysis: This is a function designed for safety, not a fault.

59. The vehicle with ABS makes "rattling" noise during emergency braking

Fault determination: false fault.

Cause analysis: during emergency braking of vehicles with ABS, there is a "quack" noise, which is a normal sound made by the ABS executive pump during decompression. At the same time, it is accompanied by the feeling of bouncing feet of the brake pedal up and down.

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60. The oil pressure indicator will light up when the vehicle accelerates

Fault determination: true and false faults coexist.

Cause analysis: there are real and virtual situations when the machine oil lamp is on. The so-called reality means that the oil pressure is really low, so low that the indicator light sends a warning, indicating that there is a fault in the lubrication system and must be eliminated. The so-called virtual, just as suspected, the oil lubrication system is not faulty, but the oil pressure indicator system is faulty and the indicator is wrongly lit.

Solution: Although this fault will not affect the normal operation of the engine, the root cause should be found and eliminated in time. Usually, the possibility of actual symptoms is large, which should be used as the main idea to judge the fault.