What causes the idle judder in BMW N55 engine?

1 Answers
DelNora
07/29/25 10:17pm
BMW N55 engine idle judder is caused by dirty throttle body or ignition system issues. The automobile engine is the power-generating device for vehicles, serving as the heart that determines a car's power performance, fuel economy, stability and environmental friendliness. According to different power sources, automotive engines can be classified into diesel engines, gasoline engines, electric vehicle motors and hybrid systems. BMW is a German automotive brand under BMW Group, featuring four vehicle categories (i, X, Z, and pure numeric series), series like 1, 2, 3, and the M series which are enhanced versions based on these models.
Was this review help?
14
0
Share
More Forum Discussions

Should You Use the Recirculation Mode When Running Car AC in Summer?

In summer, it is advisable to use the recirculation mode for car air conditioning. This helps reuse the cooled air, reducing cooling energy consumption and consequently lowering engine fuel consumption. However, remember to open windows periodically for ventilation to avoid discomfort caused by stagnant air. The recirculation mode recools the existing cabin air, enhancing cooling efficiency and reducing compressor workload. Precautions for using car recirculation mode: 1. Shortly after entering the vehicle: Open windows or activate fresh air intake mode to introduce outside air. Never drive for extended periods with all windows and doors closed, nor sleep or rest for long durations in a sealed vehicle. 2. When using AC or heating: Occasionally switch to fresh air mode and avoid prolonged use of recirculation. 3. In heavy traffic: Temporarily switch to recirculation mode. Vehicles driving with windows open should close them temporarily.
16
3
Share

Why does the battery light come on in rainy weather?

Main influencing factors are as follows: 1. Battery failure: such as depleted power, battery failure, etc. The solution is to use a multimeter to test the battery voltage. If the voltage is low, recharge it; if the battery fails, replace it. 2. Battery terminals: Loose or oxidized battery terminals causing poor contact can also trigger the battery light. The solution is to clean and tighten the battery connections. 3. Alternator belt: A loose alternator belt or tensioner pulley can cause the charging system to malfunction and illuminate the battery light. The solution is to replace the belt or adjust the tensioner pulley. 4. Alternator voltage regulator: Faulty alternator voltage regulator or excitation circuit issues can cause abnormal operation and trigger the battery light. The solution is to troubleshoot the alternator.
1
4
Share

How to Read the Size of a Car Tire?

Here are the methods to check: 1. Tread Width: The width of the tire is one of the factors that affect the vehicle's fuel consumption performance. The wider the tread, the larger the contact area with the ground, and the greater the friction between the tire and the ground. When traveling the same distance, wider tires tend to consume more fuel. However, wider tires also provide stronger grip, better handling, and better resistance to lateral forces. Conversely, narrower tires have lower fuel consumption and a lighter driving feel, but due to the smaller contact area with the ground, the grip is not as strong. 2. Aspect Ratio: The aspect ratio refers to the ratio of the height from the rim to the tread to the maximum width of the tire's cross-section. Simply put, it is the height-to-width ratio of the tire. Most cars on the market today use tires with small widths, small inner diameters, and large aspect ratios. Tires with high aspect ratios have longer sidewalls, which generally provide higher comfort. 3. Rim Size: The rim, commonly known as the wheel, forms the wheel together with the spokes. Rims and spokes can be divided into three types: integral, permanently connected, or detachable. The nominal width and nominal diameter of the rim are expressed in inches. 4. Load Index: The load index refers to the maximum load that the tire can bear, represented by a code. The larger the value, the greater the load the tire can bear. You can check the corresponding load index and value. For example, if a Goodyear tire has a load index of 95, its maximum load capacity is 690 kilograms.
13
3
Share

What is the standard range of Tesla Model Y?

Here is the standard range of Model Y: 1. Long Range All-Wheel Drive: The 2021 Model Y Long Range All-Wheel Drive version has an official pure electric range of 594 kilometers according to the Ministry of Industry and Information Technology. 2. Performance All-Wheel Drive: The 2021 Model Y Performance All-Wheel Drive version has an official pure electric range of 480 kilometers according to the Ministry of Industry and Information Technology. Below is an introduction to the related content of Model Y: 1. Models: Currently, there are only two models available, both being 5-door, 5-seat SUVs. 2. Body dimensions of Model Y: The body length of Model Y is 4750mm, the width is 1921mm, the height is 1624mm, the wheelbase is 2890mm, the front track is 1636mm, the rear track is 1636mm, the curb weight is 1997kg and 2010kg (the two different models have different weights), and the vehicle warranty is 4 years or 80,000 kilometers, whichever comes first.
9
5
Share

What does the plaid version mean?

plaid version refers to improvements in aerodynamics. Here is an introduction about Tesla: 1. Introduction: Tesla is an American electric vehicle and energy company founded in 2003 in Silicon Valley by Martin Eberhard and Marc Tarpenning. It primarily manufactures and sells electric vehicles, solar panels, and energy storage devices. 2. Company: Tesla's initial entrepreneurial team mainly came from Silicon Valley, applying IT concepts to car manufacturing, rather than following the traditional approach of Detroit-based automakers. Therefore, Tesla's venture into electric vehicles is often seen as a story of a Silicon Valley upstart challenging Detroit giants. 3. Performance: In 2013, Tesla's first-quarter financial report showed that the company sold 4,900 Model S vehicles, exceeding the initial target of 4,500 units.
16
5
Share

Can You Still Drive When the SCR Warning Light Is On?

When the engine warning light comes on, you should stop driving immediately to protect the engine. Continuing to drive may cause damage to the engine. Here is some relevant information: 1. Electronic equipment failure: There are many sensors and electronic devices around the engine, as well as some important components. If these parts malfunction, the engine may not work properly, causing the engine warning light to illuminate. 2. Sensor failure: Sensors around the engine include the camshaft position sensor, oxygen sensor, water temperature sensor, knock sensor, air flow sensor, intake air temperature sensor, etc. If certain sensors fail, the engine may not function properly.
19
3
Share
Cookie
Cookie Settings
© 2025 Servanan International Pte. Ltd.