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What is the reason for occasional shaking during Audi idling?

1 Answers
BrielleLee
07/30/25 5:28am
Audi occasionally shakes during idling due to the following reasons: 1. Excessive carbon buildup inside the engine; 2. Issues with the ignition system; 3. Unstable oil pressure, where the oil pump fails to supply oil in time; 4. The vehicle's engine has exceeded its service life. Idling is a working condition of a car, referring to the engine running in neutral gear. Audi models include: Audi A4, Audi A4L, Audi A6, Audi A6L, Audi A8, etc. Taking the 2021 Audi A6L as an example, it is a mid-to-large-sized car with body dimensions of: length 5038mm, width 1886mm, height 1475mm, wheelbase 3024mm, minimum ground clearance 117mm, and body weight 1800kg.
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How to Use the Gears of the Tiguan L?

The method of using the gears of the Tiguan L is as follows: 1. The P gear is the parking gear, engage this gear after parking; 2. Engaging the R gear is for reverse, pay attention to the rear situation when reversing; 3. The N gear is the neutral gear, which can be used for short-term parking; 4. The D gear is the automatic forward gear, pay attention to controlling the speed reasonably; 5. The S gear is the sport mode, which can provide stronger power when overtaking. The Tiguan L is a medium-sized SUV with body dimensions of: length 4712 mm, width 1839 mm, height 1673 mm, a wheelbase of 2791 mm, and a fuel tank capacity of 60 liters.
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What Causes White Smoke from Engine Exhaust?

Engine exhaust emits white smoke due to: 1. The engine temperature being too low; 2. Incomplete combustion of some fuel, resulting in white smoke being expelled along with the exhaust gases; 3. Water in the fuel supply system, which can cause white smoke during startup. Methods for engine maintenance include: 1. Using high-quality engine oil; 2. Regularly cleaning the radiator to remove scale; 3. Maintaining a reasonable engine speed; 4. Using qualified coolant. The steps for cleaning the engine are: 1. Park the vehicle in a dust-free area after turning off the engine; 2. Use compressed air or a vacuum cleaner to blow dust off the engine; 3. Wipe away dust with a semi-dry cloth; 4. Open the engine hood to let it dry.
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Why is the air conditioning not blowing hot air when heating?

The reasons why the air conditioning does not blow hot air when heating are: 1. The thermostat is damaged, causing the cooling system to enter the large circulation prematurely; 2. The air filter is dirty and clogged, affecting the heating effect; 3. The heating control button is damaged and cannot transmit the corresponding heating supply signal; 4. The small heating tank is blocked, preventing the coolant from passing through it; 5. The water pump impeller is damaged or slipping, resulting in insufficient flow through the small heating tank. The correct method for using the air conditioning heating is: 1. Turn on the heating 8 to 15 minutes after starting the car; 2. First use the external circulation to expel the cold air inside the car, then switch to internal circulation after 2 to 3 minutes; 3. Switch to the heating mode; 4. Adjust the air conditioning to the appropriate gear and adjust the air outlet direction; 5. Direct the warm air towards the front and the feet.
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What is the maximum validity period of a temporary license plate?

Temporary license plates have a maximum validity period of 90 days. A temporary license plate is a provisional vehicle travel certificate issued by the vehicle management department of public security authorities when a car has not yet been officially registered due to certain procedures being processed. Temporary license plates are divided into: 1. Temporary license plates for administrative jurisdictions; 2. Temporary license plates for cross-administrative jurisdictions; 3. Temporary license plates for testing purposes; 4. Temporary license plates for special-type motor vehicles. The materials required to apply for a temporary license plate include: 1. Identity documents of the vehicle owner and the agent; 2. Proof of the vehicle's origin; 3. The whole vehicle factory qualification certificate for domestically produced motor vehicles, or the import certificate for imported motor vehicles; 4. The vehicle identification code and engine number rubbing. There are two temporary license plates in total, one to be affixed to the lower left or right corner of the front windshield, and the other to the lower left corner of the rear windshield.
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Which province does the 'Jin' license plate belong to?

The 'Jin' license plate belongs to Shanxi Province. The license plate numbers for various regions in Shanxi Province are as follows: Jin A - Taiyuan City, Jin B - Datong City, Jin C - Yangquan City, Jin D - Changzhi City, Jin E - Jincheng City, Jin F - Shuozhou City, Jin H - Xinzhou City, Jin J - Lvliang City, Jin K - Jinzhong City, Jin L - Linfen City, Jin M - Yuncheng City. Precautions for license plate installation are: 1. License plate installation position: The front license plate should be installed in the middle or right side of the front, and the rear license plate should be installed in the middle or left side of the rear; 2. License plate installation requirements: Special sealing devices for motor vehicle license plates must be used, with complete sealing and firm installation; 3. Requirements for installing license plate brackets: The inner edge of the license plate bracket should be more than 5 millimeters away from the edge of the motor vehicle number characters.
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What Are the Effects of Excessive Engine Oil on the Engine?

Excessive engine oil can have the following effects on the engine: 1. Reduced power output; 2. Exceeding emission standards, impacting the environment; 3. Decreased performance and potential damage to the catalytic converter; 4. Increased noise, elevated crankcase pressure, and higher engine temperatures; 5. Generation of excessive oil vapor, leading to carbon buildup on the throttle, valves, and engine. Methods to address excessive engine oil include: 1. Draining the oil by removing the oil drain plug; 2. Using an oil pump to extract the excess oil. The functions of engine oil are: 1. To separate the surfaces of moving parts, reducing wear; 2. To carry heat back to the oil pan and dissipate it into the air, aiding the radiator in cooling the engine; 3. To transport carbon deposits, sludge, and metal wear particles back to the oil pan through circulation, keeping the working surfaces of parts clean.
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