Car leakage? The charging voltage is unstable and the speedometer is shaking

Car leakage? The charging voltage is unstable and the speedometer is shakingIf the vehicle is rarely moving, it may be bright, if it is driving 10 kilometers a day, then it will not work, you will run too little to burn out and decompose the substance.

If you drive often, the use of Siyoupu cleaning agent will definitely have a good effect, and after decomposition, it will be burned and discharged, and the car will be very comfortable to drive. My car is not a Highlander, it is a Honda Odyssey, and it is also 28w kilometers, after carbon deposition comparison, now after using three bottles in a row, the piston top of the combustion chamber inside has leaked out of the metal. I'm going to use it 2 more times, and I asked my riders if they use it once every 5000 km or 3000 km.

I think it's okay to do 10,000 kilometers at a time. The exhaust pipe of my car XT5 before is very black, that is, it has been feeling bad burning, my colleague's car is the same as me, but the pipe is very clean, and later I learned that he often uses such additives as Si Youpu, I also tried to use it 3 times, the pipe has now begun to appear metallic color is not black, touch the black ash with your hand is no longer, it is a little bit of very light gray. I see that the description is a bottle of 60L fuel tank, 5000 kilometers or 10,000 kilometers at a time.

First, check the spark plug and ignition coil, check whether the inlet duct has a large carbon deposit, and check whether the top of the combustion chamber piston has a thick carbon deposit. The computer detects whether there is a fault code, these are no problem, or a continuous slight jitter to clean the oil circuit, Land Rover team fuel combustion is very picky, in fact, the sensor this position has relatively high requirements for emission detection and mixture quality detection. As a result, if the fuel is of slightly poor quality, the data flow of the sensor will be abnormal, and jitter will occur.

Therefore, directly cleaning the lower oil circuit will improve combustion and reduce or completely eliminate jitter. You can try to use the Si Youpu fuel cleaner fuel tank, and after running a few hundred kilometers, observe the changes, I used it twice before and the car condition did not shake at all. Idling shake refueling does not shake, indicating that the combustion is not good.

It's not a problem with the fittings, at this time, as long as the lower oil circuit is cleaned, you can clean it with some fuel additives. Generally, gas stations use cleaning agents such as Siyoupu to clean the underground oil tank, in order to prevent impurities and deterioration of fuel from adding to the car, you can also directly use Siyoupu cleaning agent to clean the fuel tank oil circuit effect is the same, after cleaning, the combustion becomes better and the shaking disappears.

Hello; Whether the problem you mentioned is related to the circuit manifold, or the leakage of electricity from the most inconspicuous place. Is this satisfying. Question supplement; Look to see if the generator bearing is loose and in contact with the generator carbon brush or shell when turning.

Check out the generators and the wiring.

It could be a module failure, decode it.

The leakage and power that you can see are the high-voltage electricity that does not leak from the sub-cylinder line, and it will jump out of sparks, right? I can see it at night. Your sub-cylinder line is going to be replaced, and the engine will not shake after the change, because the starting backup machine is 4 cylinders, and there will be a cylinder that does not work if it leaks, and it will shake when it loses balance.

It is possible that the generator does not generate electricity, see which cylinder does not work and check which place is not hitching!

You say be specific, okay? Is it battery leakage, or cylinder line leakage? Or is it something else leaking?

When it is found that there is leakage in the body, turn off all electrical appliances in the whole car and connect the ammeter on the battery.

In addition to the car leakage to eliminate the battery fault, it is likely that there is abnormal leakage in the immobilizer circuit or other circuits, and it is necessary to check the car fuse and eliminate it one by one. The most direct way is to remove the corresponding fuse check, if after unplugging the immobilizer fuse, the leakage value returns to the normal range, it means that the circuit is indeed a tie leakage fault, which needs to be dealt with in time.

1. Tool preparation.

Multimeter. 2. Steps.

1.Check whether the battery voltage and power generation are normal and whether the battery pile head is seriously rusted, many car owners think that the leakage result is a battery problem, or a generator problem;

2.Ask the owner if he has recently repaired or installed anything or disassembled in a collision**;

3.Remove the negative pole of the battery, dial the multimeter to the maximum current level, connect the red watch pen to the negative line, and connect the black watch pen to the battery pile head and fix it;

4.Turn off all electrical appliances inside and outside the car, lock the door, observe the current size, adjust to the appropriate gear, and record;

5.Wait for about 20 minutes; After all modules of the vehicle enter the sleep state, the accurate static discharge current is read;

6.The quiescent current is generally 30mA), refer to the maintenance manual, not more than 50mA;

7.If the quiescent current is too large (as shown in the figure above), we can check by pulling the fuses and relays, that is, unplugging the fuses one by one to observe the size of the quiescent current;

If you unplug it without changing it, plug it back in the fuse or relay).

8.If a certain fuse is unplugged or the quiescent current of the relay becomes a normal value, then we look for the circuit related to the fuse and find the leakage place; (If it is a relay, also check whether the relay itself is faulty, that is, the contact is burned).

9.If the quiescent current drops after unplugging a fuse or relay, but it does not reach the normal value, then we record it, then plug it back, and continue to plug and unplug other fuses and relays, because there may be leakage in more than one place;

10.After repair, remove the multimeter and replace the negative electrode of the battery head.

3. Leakage places that are not easy to find.

1.Tail box lights.

2.Glove box lights.

3.Cigarette lighter.

Fourth, a simple calculation method.

According to p = ui (power = voltage * current) to calculate the approximate power of the electrical appliance, for example, above 14* we can calculate the electrical appliance for , we can consider whether the small light of ** is not turned off, or what module is working.

1. The battery plate is short-circuited or oxidized and falls off, resulting in self-discharge and power loss, which is the power loss caused by the internal discharge of the battery. The reason for this is an important indicator of the failure of the battery itself.

2. The battery loses power due to leakage caused by electronic components and circuits such as automotive appliances, wiring harnesses, sensors, controllers, actuators, etc. This cause is called external discharge of the battery, and this leakage is a latent circuit fault, which must be investigated.

3. When the car is in a non-working state (that is, after removing the key and locking the car), the battery must maintain a trace amount of external discharge current to ensure the normal warning current of security anti-theft equipment such as anti-theft devices, which is called "dark current", and the discharge of this part of the dark current is actually an external discharge that belongs to the normal category.

3. When the car is in a non-working state (that is, after removing the key and locking the car), the battery must maintain a trace amount of external discharge current to ensure the normal warning current of security anti-theft equipment such as anti-theft devices, which is called "dark current", and the discharge of this part of the dark current is actually an external discharge that belongs to the normal category.

It is recommended to replace the battery and check whether the generator has generated electricity, whether the car itself has escaped discharge, or find a special maintenance station, there will be no problem.

We all refer to dark current as "static current" or "static power", which translates directly from English.

Some ECUs do not need to be specially designed to reduce quiescent current, such as ABS, only 15 electric drive, no ABS if the ignition switch is not turned on, note that there is no brake, the traditional brake function is still there, hehe, to several people told them that they will ask about this.

The ECUs that need to be specially designed for this problem are instruments, bodies and other types of ECUs, such as BCM1 in the body, that is, the headlight control assembly, in fact, it is not only the light control now, some manufacturers put the anti-theft related into it, some put the electric seats in, in short, the body control part is now very messy, not like the powertrain or chassis so fixed structure, hehe, far away, it is powered by 30 electricity, which is the so-called "constant electricity", Now this kind of ECU will be equipped with a power management chip (power managerment IC) to specifically manage the power supply, the typical configuration is a small power, low quiescent current linear power supply (power supply A) and a switchable, high-power, high quiescent current switching power supply (power supply B), power supply A only to the MCU (single-chip microcomputer) and bus driver to provide power, that is to say, usually only the power management chip, MCU and bus driver consume current, That's why all three of them need to pay special attention to static power consumption. Usually the main MCU (single-chip microcomputer) of the ECU is in a dormant state, and the power supply B is cut off at the same time, at this time, the current of the entire ECU is only tens of UA to more than 100 UA, when the MCU is woken up by a timer, bus message or other external events, it will be connected to the power B, and at the same time perform the established tasks, such as controlling the light or scanning a level state, etc., the current consumption at this time is very large, often dozens of mA bottom, hehe, but this time is generally very short, After that, it enters a long-term dormant state, so that the quiescent current of the whole vehicle is reduced.

Hello, car leakage is a big thing, don't deal with it yourself, drive the car to the repair shop, and ask a professional repairer to repair it.

The battery pile head you are talking about is not the electrode of the battery, in that case, it must be your wire head connected with another electrode, and it will be ** spent when it is connected with the generator.

It is normal for friction to have sparks due to poor contact. If it is installed and contacted, there is still a spark or heat, it means that there is a short circuit somewhere

The leakage method of the car needs to replace the electrical box inside.

If something goes wrong with the controller of your electric car, it's good to get a new one.

1. It is related to the controller [it is recommended to replace it with a new one].

2. It is related to the handlebar.

The battery of the electric car is aging, and it is recommended that you replace it.

The newly bought car battery will be out of power after two or three days, and the same is true for the new battery, which shows two problems:

1. There is a short circuit in the car line.

2. The generator does not work, causing the battery to only discharge and not charge.

After setting the car on fire, hang neutral, lightly step on the accelerator, and use a multimeter to measure whether the voltage of the generator increases, if the voltage rises, it is power generation, and if the voltage does not rise, it does not generate electricity.

Don't you like to listen to ** Ah, the electricity is discharged, the generator does not generate electricity! Only at this speed will there be no power for two or three days.

Doesn't a new car come with a warranty? Wouldn't it be nice to check it out?

I don't think your car is leaking, but there is a problem with the charger, and I can't help charge the battery. If it can be charged, it will not leak a new battery in two or three days.

Find an electrician to see if there is a spot for the iron or a short circuit discharge. Not a big deal.

There is a problem with your generator, and if it leaks for a day, it will have to run out of power.

In general, there are the following:

1。The car charging section or generator does not generate electricity.

2。The power cord has positive and negative contact points that cause the battery to discharge or break the circuit.

3。It is recommended to connect a ground wire on the zero line of the battery.

Multimeters are tools that we use every day. But to be honest, the multimeter is not able to measure the power of the battery, to be exact, is the capacity of the battery, to know what the capacity of the battery is, whether it is qualified or not, you need to carry out a discharge test on the battery, taking the 12-volt battery as an example, the specific method is to charge the battery, with a current of 1 10 continuous discharge.

The voltage of the battery is not lower than volts. If the discharge time is not less than eight hours, it is qualified.

Under the premise that the car does not start and does not power on, use a multimeter to detect car leakage, use the maximum DC current block, first pull out a fuse, confirm that the front and rear sides of the fuse socket are positive and negative, and then the red rod is on the contact with positive electricity, and the black rod gently clicks on the negative side of the fuse plug, if the watch hand is moving, it means that there is leakage.

Hello, hit the multimeter to the position of 20 press Turn off all electrical appliances in the car Close all doors Remove the negative electrode of the battery Measure the pole of the negative electrode line and the negative electrode of the battery The measurement result is greater than the leakage Thank you for adopting.

Turn off all the electrical equipment in the car, only leave the anti-theft monitoring, and then, remove the negative wire end of the battery with a wrench, and then string the meter pen of the multimeter into it, and measure the current in this state with the current file, the current value is less than A or close to this value, which means that it is normal, if the current reaches 1 A, it means that the leakage is serious.

Yunnan Kunming Automobile Leakage Inspection.

Hello, there must be an impact, leakage will lead to battery loss, the car will not be able to start when the power is exhausted, and then others will come to repair, which will cost more money and delay time.

It won't take much time for you to fix it, and when the time comes, you miss a lot and the car won't start, so it will take time.