Browse

Antiques Collectibles Apparel Baby Kids Items Books， Movies And Music Electronics Free Stuff Garden Outdoor Health Beauty Home Goods Home Improvement Supplies Musical Instruments Office Supplies Pet Supplies Sporting Goods Ticket Toys Games Transportation Others

Used Cars New Cars Others

Business Crafts Design And Web Events Home Improvement Legal Lessons Personal Pets Photography Repair And Technical Support Wellness Writing， Translation， And Transcription Others

Activities & Groups Artists & Musicians Classes & Lessons Events Friendship & Networking Lost & Found Rideshare Sports Teams Volunteers Travel & Travel Partners Skills & Language Swap Other

Why does the fan continue to run after some cars are turned off?

2 Answers

MaliaLynn

07/29/25 1:01am

The reason why the fan continues to run after the car is turned off is that when the temperature of the coolant is too high after parking, the vehicle's computer automatically calculates the fan's speed and duration. Therefore, the higher the temperature, the longer the fan runs, thereby protecting the engine. This is a normal phenomenon. Below are the reasons why the fan continues to run after the engine is turned off: Loose circuit connection: Try disconnecting the fan's wiring harness, perform a separate power-off process, and then inspect and repair the circuit. Relay or coolant temperature sensor failure: If the relay contacts of the fan are stuck, preventing it from executing the ECU's commands, or if the coolant temperature sensor is damaged, sending incorrect signals to the ECU, both situations can cause the fan to continue running non-stop after the engine is turned off.

Was this review help?

4

3

Share

LucyFitz

08/12/25 5:10am

I've driven both old and new cars and noticed that it's quite common for the fan to keep running after the engine is turned off, mainly because the engine temperature is still high and needs continued cooling to protect engine components. For example, after long-distance driving in summer, even after turning off the engine, the sensor detects high temperatures and keeps the fan running for a few minutes. This design is to prevent damage or deformation of internal engine parts, much like a pot still steaming after cooking. Most modern cars have electronic systems controlling the fan, powered by the battery, so there's no need to worry about wasting electricity. However, if the fan runs continuously for too long, it might be necessary to check the temperature sensor or coolant level. I've also seen some modified car owners share their experiences, stating that fan delay is a normal protective measure, especially for turbocharged models, which face higher risks of overheating.

Was this review help?

10

4

Share

Expand All

More Forum Discussions

What does traffic violation code 57042 mean?

Violation code 57042 means: Using another vehicle's license plate. According to the relevant regulations of the "Road Traffic Safety Law of the People's Republic of China", the penalty includes: 12 demerit points; a fine of 2000 yuan; and additional penalties such as confiscation of the license plate. Traffic violation codes consist of four to five digits, classified according to the general principles of traffic laws. The order from left to right is as follows: the first digit represents the behavior classification code, the second digit represents the demerit point classification code, the third and fourth digits are sequential codes, and the fifth digit indicates the specific item number. First digit: Behavior classification code, indicating the category of the violation under the Road Traffic Law. Second digit: Demerit point classification code, indicating the category of demerit points for the traffic violation. Third, fourth, and fifth digits: Sequential codes, indicating the order of the violation within the same behavior category. For example: 13035—"1" indicates a motor vehicle violation, the second digit "3" means 3 demerit points, and "035" represents the fifth item under the third violation in the 3-point category. Explanation of behavior classification codes: Codes starting with "1" indicate motor vehicle violations, e.g., 1003. Codes starting with "2" indicate non-motor vehicle violations, e.g., 2002. Codes starting with "3" indicate pedestrian or passenger violations, e.g., 3030. Codes starting with "4" indicate highway violations, e.g., 4002. Codes starting with "5" indicate other regulations, e.g., 5005. Codes starting with "7" indicate implementation rules of provinces, autonomous regions, or municipalities, e.g., 7008. Codes starting with "8" indicate local regulations of cities (prefectures, autonomous prefectures, or leagues), e.g., 8606. There are four common ways to check motor vehicle violations: Visit the office halls of traffic enforcement departments in various districts or counties to inquire via touch-screen terminals. Log in to the public service website of the local Public Security Traffic Management Bureau, find the vehicle violation inquiry section, enter the license plate number and engine number, and click "Query." Call the inquiry hotline (area code + 114). Use the Traffic Management 12123 app (V2.8.1B437 for iOS 15+ or V2.8.1B274 for Android 12+) to check. For violations involving the use of another vehicle's license plate, you can handle them through the Traffic Management 12123 app. After logging in, enter the violation processing workflow, complete the process, and make the payment.

What is the difference between full synthetic and semi-synthetic engine oil?

The differences between full synthetic and semi-synthetic engine oil are: 1. Different base oils: Full synthetic oil is blended from Group III, IV, and V base oils; semi-synthetic oil uses Group III base oil. 2. Different replacement intervals: Full synthetic oil should be replaced once a year or every 10,000 kilometers during use; semi-synthetic oil should be replaced every six months or every 7,500 kilometers during use. 3. Different vehicle suitability: Full synthetic oil is more commonly used in turbocharged engines and high-end luxury vehicles; semi-synthetic oil is more suitable for economical, small-displacement vehicles that prioritize smooth driving.

What does ecobost mean?

ecobost is a series of high-performance engines from Ford, characterized by low fuel consumption and high power. Its technology incorporates industry-leading advancements such as an all-aluminum cylinder block, turbocharging technology, direct fuel injection, and VVT variable valve timing. The ecobost engine builds upon traditional gasoline engines by adding three key technological advantages: direct fuel injection, turbocharging, and a dual independent variable valve timing system. The Ford Edge is a mid-to-large crossover SUV model, built on Ford's global mid-size vehicle platform. The vehicle measures 4878 mm in length, 1925 mm in width, and 1770 mm in height, with a wheelbase of 2850 mm.

What to Do When the Dash Cam Runs Out of Power?

Since the dash cam draws power from an external source, you can try connecting it to other power outlets in the car. Additional information about dash cams is as follows: 1. A dash cam is a device that records images, sounds, and other relevant information during vehicle operation. 2. After installing a dash cam, it can record the entire driving process in video and audio, providing evidence in case of traffic accidents. 3. The dash cam serves as the black box for automobiles. It starts recording as soon as the engine is ignited, capturing high-definition footage and audio of the vehicle's journey. In the event of an accident, it immediately provides evidence to protect the driver's rights.

What Type of Car is the Beetle?

The Beetle is a compact car produced by Volkswagen. Below are details regarding its dimensions and powertrain: Body Dimensions: The Beetle has a wheelbase of 2538mm, with a length of 4288mm, width of 1825mm, and height of 1488mm. Powertrain: The Beetle is equipped with two engine options: a 1.2-liter turbocharged engine producing 105 horsepower and 175 Nm of torque, and a 1.4-liter turbocharged engine delivering 150 horsepower and 250 Nm of torque.

What brand is the zeonc7 tire?

zeonc7 is a Cooper tire, known as the 'King of Quiet'. Tires are a crucial component of a vehicle, being the only part that comes into direct contact with the ground. They play a vital role in the driving stability and safety of the car. Tire pressure is also extremely important for tires; it should neither be too high nor too low. If the tire pressure is too high, the contact area between the tire and the ground decreases, which can negatively affect the vehicle's stability and handling. Conversely, if the tire pressure is too low, the tire may experience wave-like deformation at high speeds, increasing the risk of a blowout. Different tires are designed with varying performance focuses: some prioritize handling, others emphasize water drainage, some are designed for quietness, and others focus on comfort.

Trending Ranking

Does the 2021 Vios come with navigation?

What are the differences between the Exeed TX and Exeed LX?

What hatchback models does Citroën have?

What engine is used in the Citroën C2?

How many years can the CVT transmission of Emgrand generally last?

What are the differences between the Sylphy Intelligent Enjoyment Edition and the Comfort Enjoyment Edition?

What is the wheelbase of the Citroën C2?

Where is the cabin air filter located in the Citroën C3-XR?

What engine is equipped in the Citroen C3-XR?

How Many Seats Does a Minibus Have?

More Forum Discussions

How many points are deducted for stopping midway during parallel parking?

What model is the Chevrolet Lova?

Where is the cabin air filter located in the Citroen C4?

Is the 4A15 a Mitsubishi engine?

Help

Cookie

Cookie Settings

© 2025 Servanan International Pte. Ltd.