Golf battery is broken, the fan is long, and the idle speed is high, how to solve it.

Mine also encountered this situation, and I have not found the reason, the idle speed rises and the fan rotates at a high speed, and after a few minutes, it falls off again, and then rises again.

Because the fan spins and causes a load on the engine, the computer increases the idle speed, and the upstairs brother is right.

It's better to wash it.

Normally, the battery needs to be charged to avoid battery overdraft.

This kind of thing directly protects rights, and there is no need to worry about what is going on, and the front wheels of the car determine the safety factor of the car.

The 10 Golf idle high-speed cool cars are about 950, and the hot car will not come down, and if the outside temperature is too low, the idle speed will be maintained at 950 at minus a few degrees. When the outside temperature comes up, the idle speed will drop to about 750.

The rotational speed is increased but not more than 1600r min; The rotational speed increases and exceeds 1600r min。Cause of failure: The signal of the coolant temperature sensor is incorrect, resulting in an increase in idle speed, due to the occasional failure of the coolant temperature sensor.

The coolant temperature is transmitted far below the actual temperature, causing the control unit to mistakenly believe that the engine is working at low temperatures, and mistakenly intake more air and more fuel injection, resulting in an abnormal increase in idle speed, which can reach more than 2000r min.

Safety hazard: the battery power loss leads to an increase in the engine idle speed due to the serious battery power loss, in the case of idle operation and more electrical equipment, the generator power generation efficiency is not high at idle speed, resulting in insufficient power supply of the engine control unit, and the engine speed fluctuates, up to 1400r min 1600r min.

If the three-way catalytic device fails, it is recommended that the user replace the three-way catalytic device.

The sudden increase may be caused by the failure of the vehicle's throttle, and the dirty throttle will cause the opening error of the throttle, reduce the sensitivity of the throttle, and may not close in place when idling, causing a sudden increase in idle speed or even more than 3000rpm.

The damage to the idle speed control penalty will make the idle speed unable to be adjusted correctly, causing problems such as too high idle speed, unstable idle speed, and difficult cold start.

If you answer a situation like this, it is mainly recommended to check whether it is caused by a problem with the throttle opening, and if the throttle opening is caused by the throttle opening, it is mainly related to the throttle deposition, so it is recommended to clean the throttle first, and then rematch it, which should solve the problem.

Normal problems like this, the main thing for Changjian is the fault caused by the carbon deposit problem here in the throttle, and it is recommended to drive it to the repair shop for inspection and repair.

Because your car is a manual transmission, and you experience this situation after pressing the clutch pedal, I personally doubt that the clutch switch is in good contact. Please check this part. The function of the clutch switch is that when you press the clutch pedal, the switch is turned on, and the circuit sends a signal to the engine to reduce the speed.

Then stabilize idling.

This switch is not in good contact, and it will generally encounter the situation of high and low idle speed. So take the time to check this part.

If the idle speed is higher than usual in winter, it is normal, and the hot car will return to normal after a while, especially now that direct injection engines are more common.

If you usually do this all the time, it is unstable at idling, and it is best to check it in 4s.

1. Check the throttle opening. For most electronically controlled engines, the base idle speed is set to 500 50r min when the engine reaches normal temperature and the idle valve is fully closed. If the basic idle speed is too high, the vacuum seal of the system should be checked, especially the sealing of the vacuum tube, PCV valve and crankcase and other related parts.

2. Check the load signal of the engine. At this time, the idle control valve can be connected, and its opening should be between 15% and 25% at the normal operating temperature of the engine, if the idle control valve is opened too much, the engine load signal should be checked to see if it is normal, such as the temperature value of the air conditioning signal, battery voltage and water temperature sensor. At this time, we should pay attention to the following situations: first, if the water temperature is too low for a long time, the engine idle speed will be high; Second, if the battery voltage is too low for a long time, the engine idle speed will also be high (such as insufficient charging caused by generator belt slippage, and the idle speed after the engine starts); Third, the air conditioning switch signal of the air conditioning system is poor, and the pressure switch is closed, which will also cause the engine idle speed to be high.

3. Check the vacuum level of the intake manifold. Under normal engine idling conditions, the vacuum level of the intake manifold should be 57 71kpa, if the vacuum is too low, it will cause the pressure signal of the engine intake system to be abnormal, and the engine computer will mistake the load for an increase, thereby increasing the idle speed.

4. Reset the engine computer. The so-called resetting of the engine computer is to clear the fault memory in the engine computer and let it relearn to idle.

5. Check whether the throttle is completely closed when idling, and whether the throttle cable is stuck. If the engine idle speed can drop to normal speed, it means that the throttle is stuck and closed loosely. The throttle stagnation should be replaced, and the throttle shaft stagnation should be disassembled and cleaned with the throttle body.

6. Re-adjust the idle speed according to the prescribed procedure of the engine, if the adjustment is invalid, further inspection should be done.

7. Check whether there is air leakage in the pipe joints and vacuum hoses of the air intake system.

8. Carry out fault self-diagnosis, if there is a fault**, find the cause of the fault according to the displayed fault**. 9. Check the water temperature sensor, after unplugging the water temperature sensor harness, if the engine idle speed returns to normal, it means that the water temperature sensor is faulty, and the water temperature signal is too low to be transmitted to the computer. It is worth noting that when the water temperature sensor is unplugged, the engine failure warning light will illuminate, at which point the computer's fail-safe function will work and automatically set the water temperature to 80, and the water temperature sensor will still be left in the computer after replugging the water temperature sensor harness plug**.

In this regard, you can connect to a computer detector to eliminate the fault**, or remove the engine computer fuse for about 30s after the engine is turned off, or you can eliminate the fault in the computer**.

Check whether the exhaust of the water tank is not thorough, and if there is air inside, the heat dissipation effect will be checked a lot. Secondly, check whether the temperature sensor is faulty, you can go to the repair shop to get the computer to check, if there is no fault code, it may be that the temperature sensor is broken.

Hello, the fan does not stop at high speed, it may be that the water temperature is high, check whether the throttle is dirty, I hope my answer can help you, if you have any questions, please feel free to ask, I wish you a happy car. [If you have a problem with the car, ask the car master.] 4S shop professional technician, 10 minutes to solve. 】

Hello, it may be that the water temperature is high, it is recommended that you go to the repair shop to check the repair. [If you have a problem with the car, ask the car master.] 4S shop professional technician, 10 minutes to solve. 】

Did you find the reason? Mine is the same problem.

Hello, the fan rotates at high speed, check whether the antifreeze is enough, whether there is a problem with the water temperature control switch, high idle speed, it is recommended that you check whether the lower throttle is dirty, clean the lower throttle, see if there is a leak in the trachea, whether the pipe head is loose, check the spark plug to see if it is damaged [There is a problem with the car, ask the car master. 4S shop professional technician, 10 minutes to solve. 】