2001 factory Audi A62 8 air conditioned car shake what is the reason

It should be that the throttle is dirty, just remove the throttle body and clean the throttle body.

The throttle valve is a controllable valve that controls the entry of air into the engine, and the gas enters the intake pipe and mixes with gasoline to form a combustible mixture, thus combusting work. It is connected to the air filter and the engine block, which is known as the throat of the automobile engine. There are two kinds of throttle valves: traditional cable pull type and electronic throttle, and the traditional engine throttle control mechanism is connected to the accelerator pedal at one end and the throttle linkage plate at the other end through a cable (soft steel wire) or a tie rod.

The electronic throttle valve mainly uses the throttle position sensor to control the opening angle of the throttle according to the energy required by the engine, so as to adjust the size of the air intake.

Generally speaking, the load on the engine will increase after the air conditioner is turned on, and in order to prevent the engine from stalling due to the increased load, the ECU will increase the amount of fuel injected to maintain the smooth operation of the engine. The idle speed will increase accordingly. This problem is present in many cars.

It is recommended to check the refrigerant pressure of the air conditioner first, because if the refrigerant pressure is too high, it will cause the engine to be unable to carry it when idling. It may also be caused by excessive carbon deposition in the engine, and the oil circuit and fuel injector, throttle, idle motor, and intake tract of the vehicle should be inspected and cleaned; Then there is to check whether the initial oil pressure is too low, due to the long downtime, the fuel system oil pressure is too low or the oil pressure control valve is not good, in an instant can not establish a good standard oil pressure, it is easy to cause the cold start fuel injection is insufficient to form a poor start, check whether the air filter is too dirty and affect the quality of the air intake, that is, at best insufficient at start. It is also necessary to check whether the idle solenoid valve is stuck due to excessive carbon deposits, resulting in idle shaking of the air conditioner.

There are generally several situations in engine fault diagnosis, the most common reason for serious engine carbon deposition causes car shaking, the engine has a general cleaning agent, which can remove carbon deposition and dismantle the engine oil to clean carbon sludge, which is very convenient to use, suspension decomposition does not block, and at the same time it is miscible with oil and will not lead to delamination, better and safer cleaning of your engine.

Low temperature on rainy days, low speed of electronic fans, high temperature in normal weather, high speed of electronic fans, should be jitter caused by unbalanced electronic fan blades.

Hello! According to the situation you described, it is recommended to go to the repair shop first to check whether there is any air leakage in the air intake system, and whether the spark plug and ignition coil are working well! If you don't understand, you can ask, I hope my answer can help you! Have a great day!The car master walks with you!

There are generally several situations of engine shaking, starting shaking, cold start, three-way catalytic temperature is not enough, and the most common reason for serious engine carbon deposition causing car jitter is that the throttle is too dirty or the fuel injector has too much carbon deposition, because the gasoline adsorbed on the carbon deposit after the car is sucked into the cylinder by the engine for combustion, and the combustible mixture of the engine is dilute and thick, resulting in idle shaking after cold start. Solution: Siyoupu cleans the oil circuit and checks whether the idle motor has carbon deposits and should be cleaned.

The underground oil depot of the gas station is almost completely closed but must be cleaned regularly, so our car fuel tank is not a confined space compared to the underground oil circuit. Therefore, the fuel of the underground tank cannot guarantee that the cleanest fuel is fed into the tank every time, and how can our car ensure that the oil circuit is not dirty and burns well?So regular cleaning of oil circuits is not just a matter of carbon deposits.

I did have such a phenomenon in the car before, there is no fault code, the leg leans against the side of the door and there is a slight continuous shaking, and it is not possible to change all kinds of accessories, and then under the guidance of a master, I added a Si Youpu fuel treasure in the fuel tank and used it for many times, and this slight jitter disappeared. Probably ran 2 tanks of gas, the kind of jitter of idling and waiting for the red light and the jitter of d when the door is gone, it's quiet and smooth Now, you can learn from it.

It is recommended to check whether the throttle valve has not been cleaned for a long time and is dirty, and the second is to check whether there is a problem with the idle motor. Is it the bottom of the speed, or is it a problem with the speed valve!The water temperature is abnormal. It is recommended to send it to a professional 4S shop for inspection and maintenance.

More carbon deposits Clean carbon deposits.

Spark plugs, high-pressure bags, cylinder pressure, oil pressure, footing, all have been seen.

Main causes of idle jitter:

1.Serious engine carbon deposition: Cars always have the problem of carbon deposition, including cylinder carbon deposition, throttle carbon deposition, spark plug carbon deposition, intake carbon deposition, etc.

When the engine has too much carbon deposit, it will affect the ignition energy, air intake efficiency and air-fuel ratio of the car, resulting in the unstable power output of the car, and the phenomenon of idle speed and acceleration jitter appears.

2.Unstable oil pressure: If you have cleaned the engine carbon deposits, cleaned the throttle, replaced the oil pads and spark plugs, etc.

And when idling still found that the body shakes, it is recommended that you go to the 4S shop to check whether the oil supply pressure and intake pressure sensor are normal, if the oil pump supply pressure is abnormal, or the value of the intake pressure sensor is wrong, and the work is not good, it will cause the body to shake.

3.Engine cylinder shortage: Engine cylinder deficiency mainly refers to the engine one or more cylinders are not working properly, which is generally manifested as:

The exhaust gas flowing out of the car is obviously intermittent, and the exhaust pipe shakes violently, and the engine shakes clearly, sometimes accompanied by abnormal noises. This is mostly related to ignition coil failure.

4.Aging of engine parts: Shake in the car is also associated with the aging of the engine feet (also known as claw pads).

The engine foot is actually the shock absorber system of the engine. The engine feet are responsible for absorbing slight vibrations when the engine is running. If there is a problem with the engine base, these vibrations can be transmitted to the steering wheel and cab, causing vibrations at idle.

Solution; The best way is to clean the oil circuit, clean it regularly, and use PNF fuel additives to solve the above problems caused by carbon deposits. The fuel quality is not very good or the initial fuel of the new car is stored for too long, resulting in a rapid increase in the colloidal composition of the oil circuit, which will continue to pollute the fresh fuel and cause no good fuel to participate in combustion in the later stage, and the carbon deposition exceeds the standard, which is especially common for China VI vehicles. We can only gradually alleviate most of the problems by maintaining clean oil circuits.

There are several reasons for engine shake:

1. The engine has serious carbon deposits, and the most common car with serious shake is that the fuel injector throttle valve is too dirty or too much carbon;

2. Ignition system problems, check the working conditions of spark plugs, high-voltage wires and ignition coils;

3. The oil pressure is unstable, if the first pressure of the pump is abnormal or the error and poor work of the inlet pressure sensor will cause the body to shake;

4. Aging of engine parts; Excessive chain carbon deposits in engine emissions absorb carbon from the gasoline of the cold-start injector, which results in a dilute cold-start mixture and difficulty starting.

Specific solutions to idle jitter:

1. The engine has serious carbon deposits. The most common cause of idle judder is excessive carbon buildup on the throttle or fuel injector. When there is too much carbon deposit inside the engine, the gasoline sprayed by the fuel injector during cold start will be absorbed by the carbon deposit, resulting in a mixture that is too thin and making it difficult to start.

After landing, the gasoline adsorbed on the carbon deposits will be sucked into the cylinder by the engine and burned, which will thicken the mixture. When the mixture is thin and sometimes thick, it will cause idle shaking after the cold starter. The lower the temperature, the greater the amount of oil required for cold starts, and the more the presence of carbon deposits affects cold starts.

The solution is to clean the carbon deposits at the throttle and injector.

2. Poor ignition system and poor ignition of spark plugs will also lead to engine idling and shaking. If there is a problem, check if the ignition system is faulty and if there is too much carbon deposited in the spark plug.

3. The oil pressure is unstable. If you have cleaned the engine carbon deposits, cleaned the throttle valve or replaced the spark plug, and there is still the problem of body shaking when idling, it is recommended to go to the 4S shop to check whether the fuel supply pressure and intake pressure sensor are normal. If the oil pump supply pressure is not normal or the intake pressure sensor is incorrect, it can also cause the body to shake when idling.

Solution; The best way is to clean the oil circuit, clean it regularly, there is no specific experience in the research and development parameters of the clean engine from the new car, coupled with the continuous improvement of emission standards, can not adapt to the change of fuel, all manufacturers of the engine are unable to solve this jitter problem in the short term, plus the fuel quality is not very good or the initial fuel of the new car factory is stored for too long, resulting in a rapid increase in the colloidal composition of the oil circuit, which will continue to pollute the fresh fuel and cause no good fuel to participate in combustion in the later stage. The occurrence of excessive carbon deposits is especially common for China VI vehicles. We can only gradually alleviate most of the problems by maintaining clean oil circuits. The use of PNF dope fuel additives can solve the problems caused by carbon deposition.

Audi A6 on air conditioner idle jitter reasons? Auto Network: I'll answer for you.

Audi A6 Causes of slight shake at idle:

1) After removing the spark plug at the pit stop, it was found that the 4-cylinder spark plug was seriously ablated, and the inspection found that the 4-cylinder valve was damaged, and it was determined that the vehicle was seriously shaken due to valve damage. After replacing the 4-cylinder valve, the vehicle shake was significantly reduced.

2) But sitting in the cab still feels a slight shaking, indicating that the vehicle is still malfunctioning. Detected with VA S5 052 found no faulty storage. Considering that if the electronic system fails, there will be a fault memory in the control unit, so the electronic fault point is eliminated.

3) The crankshaft is unbalanced. The piston is not equipped with original spare parts, and the counterweight is uneven. The flywheel rotates unevenly, causing vibration.

4) Check and find that the surface of the flywheel and the crankshaft contact has eccentric wear, test the balance of the flywheel when rotating, and find that the uneven rotation of the flywheel causes the engine to vibrate during operation, and the crankshaft has been worn due to the eccentric wear of the flywheel.

Troubleshooting: Replace the flywheel and crankshaft.

Fault summary: due to the damage of the flywheel, the rotation is unbalanced, and the long-term unbalanced rotation leads to the wear of the flywheel and crankshaft, and finally causes the engine to shake slightly when idling, resulting in this fault phenomenon. For such faults, the principle analysis should be done before maintenance, and the fault points should be identified.

Audi A6 on air conditioner idle jitter reasons?

Dirty air filter: The air filter is designed to protect the engine and reduce wear and tear, and is generally replaced in about 10,000 kilometers.

High-voltage line break: high-voltage line break refers to the high-voltage wire core break, which can affect the ignition and cause the engine to shake and crack.

There are three points of Audi A6 engine shaking, and the following are the relevant reasons: 1. Serious carbon deposition in the engine. When there is too much carbon deposit inside the engine, the gasoline emitted from the cold start injector will be absorbed by the carbon deposit, resulting in too thin the cold start mixing bucket and making it difficult to start.

2. Ignition system dismantling problem. Poor ignition system and poor spark plug flashing will also lead to this kind of failure. Solution;

Check the spark plug for excessive carbon build-up and replace the spark plug. 3. The fuel injector is blocked, which causes serious carbon deposition in the engine skin pin, resulting in inconsistent work of each cylinder and causing the engine to shake.

This kind of fault is recommended to go to the repair shop to test the idle motor, if the idle motor does not work well or the throttle voltage is not within the standard range, this kind of fault will be caused.

If the vehicle has an "intermittent idle stall", then in the event of a stall, we can take the following appropriate measures to avoid the danger:

1. If the engine stalls when parking and waiting, you only need to start the engine again, if it is an automatic car, you must first put the gear into the parking gear (P gear) or neutral gear (N gear) before restarting the engine;

2. When the vehicle is coasting, do not panic, stabilize the direction, bring a little braking according to the situation, if it is an automatic car, first carefully put the gear into neutral, be careful not to mistakenly hang into the reverse gear (R gear) track, otherwise it will damage the transmission, and then restart the engine. Of course, you can also turn on the double jump lights to pull over the vehicle and then restart the engine;

3. When the brake is turned off, don't be nervous, stabilize the direction, you can take measures to increase the braking strength, and pay attention to the surrounding conditions, if you have the opportunity to change lanes to bypass the obstacles in front, you should pay attention to the force when turning the steering wheel, because there is no direction assistance, the steering will be heavier.

I like to talk about the first, the second, the third.

First. Too much carbon deposits on the throttle. This leads to insufficient air intake when the car is cold. The combustion in the cylinder is not good. Cause the engine to shake and idle unsteadily! So. See if the throttle has been washed recently. It should be washed down at 15000km.

Second. The quality of gasoline is not good. As a result, carbon deposits occur on the surface of the piston and the edge of the high-pressure injector due to insufficient combustion.

So the cold start burns badly. The carbon deposits are too hard. Usually the car is hot and the gear cracks and shouts better.

Here's how to deal with it. Change gas. Or add fuel additives and clean the oil circuit!

Third. This is a specific point of issue. It is the exhaust gas recirculation valve that is damaged.

Causing the vehicle to tremble. However, this situation exists in both hot and cold cars. Here's how to check it.

When the car is idling, you use your hand to unscrew the oil filler. Let's see if we can easily open it. If it is very close to the suction cup sucking the same.

That's broken, just change it. It should only have a little suction. It's easy to open.

Well, that's what I thought. I guess there was a problem with the first two loves.