【Car owner's car knowledge】 Is there any abnormal noise in the car air conditioner? The turn signal doesn't come on? Hot car won't even start? These problems that make car owners particularly tangled actually occur in emergency vehicles. Are you speechless and helpless? Now let us tell you what happened and what are the solutions?
What's the matter with the abnormal noise when the air conditioner is turned on?
Problem description 1: The air conditioner of the car always makes an abnormal noise when it is just turned on. What's the matter?
Reply: The noise after the air conditioner is started is mainly the working noise of the compressor, not a malfunction. Because the work of the compressor is intermittent, not always working, it will make a large working noise when it is restarted; if the automatic operation of the air conditioner after the key door is opened is definitely abnormal, in most cases it is the fan The failure of the control module requires replacement of new parts.
What should I do if the turn signal does not come on?
Problem description 2: The turn signal of the car suddenly does not light up, and the double flashing light also does not light up. What is going on?
Reply: When this phenomenon occurs, we must first focus on checking the fuse, not just to see if the fuse is broken or not, but also to see if the contact foot of the fuse is corroded. If it suddenly does not light up, this reason accounts for more than 50%. The second is to check whether the relay has a signal line, whether the relay is damaged, and whether the contact feet of the relay are corroded.
What should I do if the remote control key fails?
Problem description 3: Sometimes the remote control key of the car can be remotely controlled, and sometimes it can't. What's going on?
Reply: The remote control is not sensitive. First measure the voltage of the battery. In most cases, it is caused by low voltage. It can be solved by replacing the new battery. In addition, it may also be caused by the battery being left for too long.
What's the problem with the hot car not starting?
Problem description 4: Sometimes the car cannot be started when it is warmed up, but sometimes it can. What is the reason?
Reply: There may be the following three situations: First, it is caused by excessive carbon deposition in the throttle valve, idle motor or intake port. Due to carbon deposition in the intake port, the cross-sectional area of the air passage changes, so that the control unit cannot accurately control the idle air intake, resulting in the mixture being too rich or too lean, resulting in the engine unable to start. Second, there is a slight leakage of the fuel injector, which causes the fuel to leak into the combustion chamber for a period of time after the vehicle is turned off, causing the mixture to be too rich when it is restarted, which eventually makes it difficult to start. The third is due to the damage of the activated carbon canister. If the solenoid valve is always in the open state, the mixture in the intake port of the engine is always in a rich state, causing the mixture to be too rich when the car is hot, which will cause the phenomenon that it is not easy to start.
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