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Do You Need to Wait for the Engine Coolant Temperature to Rise Before Turning on the AC in Summer?

1 Answers
OEmerson
07/30/25 1:31am
You do not need to wait for the engine coolant temperature to rise before turning on the AC in summer. Below are the specific reasons for low engine coolant temperature: 1. Thermostat malfunction: If the valve fails to close, the coolant will continuously circulate in the large loop, which may result in low engine coolant temperature. Alternatively, some vehicles may have their thermostats removed during summer to lower the temperature when it gets too high, leading to low engine coolant temperature. In such cases, the thermostat needs to be inspected and possibly replaced. 2. Constant operation of the cooling fan: For electric fans, circuit malfunctions can cause the fan to run continuously. Similarly, a faulty silicone oil clutch can also lead to constant fan operation. These issues can both cause low engine coolant temperature.
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Which province does the license plate 'Su' belong to?

The character 'Su' on a license plate represents Jiangsu Province, indicating that the vehicle is from Jiangsu Province. More information about license plates is as follows: 1. SuA Nanjing, SuB Wuxi, SuC Xuzhou, SuD Changzhou, SuE Suzhou, SuF Nantong, SuG Lianyungang, SuH Huaian, SuJ Yancheng, SuK Yangzhou, SuL Zhenjiang, SuM Taizhou, SuN Suqian, SuU is an additional code for Suzhou. 2. For car license plates, the motor vehicle registration authority code is located in the center at the top of the plate, with Chinese characters and English letters arranged horizontally. 3. For motorcycle license plates, the motor vehicle registration authority code is located on the left side of the plate, with Chinese characters and English letters arranged vertically.
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Should car body repair be done at a 4S shop or outside?

Car body repair should be done at a 4S shop for the following reasons: 1. A 4S shop only services cars of one brand and has all the vehicle's data, so they have a better understanding of the car. In terms of service, material selection, technology, and craftsmanship, they are relatively more professional. 2. For new car body repair, in terms of service, the 4S shop must conduct multiple quality checks before delivering the car; in material selection, the paint color code can be read through the vehicle identification number, reducing color differences after repair; in technology and craftsmanship, employees undergo professional training, ensuring meticulous paintwork. 3. Generally, the larger the repair area, the higher the depreciation rate. Body repair essentially involves cutting and stretching the deformed parts, then applying putty and paint to restore the deformed area as much as possible. Although there may be no visual difference after the repair, deformation may recur over time. A 4S shop can do a better job.
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What are the main subjects studied in automotive repair?

Automotive repair primarily involves studying the structure and disassembly of automobiles, engine maintenance, automotive chassis maintenance, automotive transmission system maintenance, automotive suspension system maintenance, principles and maintenance of automotive electrical equipment, automotive electronic control system maintenance, automotive usage and technical management, comprehensive automotive fault diagnosis, automotive professional English, automotive marketing, motor vehicle insurance and claims, etc. The specialized training content for automotive repair is as follows: 1. Learn the structure, function, working principles, and mechanical maintenance knowledge of diesel and gasoline engine chassis and complete vehicles for both imported and domestic automobiles. 2. Study automotive circuits, electronic ignition control, fuel injection, ABS anti-lock braking systems, automotive air conditioning, automotive audio, in-car entertainment systems, reverse radar, CD functions, as well as the installation principles and maintenance of anti-theft devices. Additionally, learn to repair fuel-injected vehicles and diagnose full-vehicle circuit faults, enabling trainees to master the complete set of maintenance techniques for intermediate and advanced fuel-injected vehicles in the shortest possible time.
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How to Solve Ignition Coil Failure?

Solutions for ignition coil failure are as follows: 1. If only one ignition coil fails and the other three cylinders are working normally, emergency driving is possible, but it is very harmful to the car's engine, mounts, and connecting parts. A mechanic from a designated Bao Lai service station recommends that owners temporarily stop using vehicles with a misfiring cylinder. If more than one ignition coil is burned out, it is advised to stop driving immediately. 2. Driving a vehicle with a misfiring cylinder due to ignition coil failure is very unsafe. On uphill roads, especially those requiring a "hill start," the engine load of a misfiring vehicle increases, and the body shakes more noticeably, making it prone to sudden stalling. This can easily cause the driver to panic, leading to rolling back or even accidents. If it is absolutely necessary to move the vehicle, the engine speed should be kept above 2500 RPM as much as possible.
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How many color options are available for the Mazda CX-4?

The Mazda CX-4 offers six color choices: Phantom Silver, Soul Red Crystal, Pearl White, Deep Crystal Blue Mica, Titanium Flash Mica, and Machine Gray. Each color provides excellent visual appeal. Below is a brief introduction to the vehicle: 1. The all-new CX-4 fully embodies Mazda's commitment, retaining the authentic 'Zoom-zoom' character. Beyond exterior enhancements, the upgrades primarily focus on the driving experience. 2. In terms of configuration, the all-new CX-4 also features certain upgrades, such as the central display screen expanding from 7 inches to 8 inches, with high-end models equipped with a BOSE sound system. 3. For powertrain, the all-new CX-4 continues to offer 2.0L/2.5L engines, delivering maximum power outputs of 116kW (158PS) and 141kW (192PS), with peak torque at 202N·m and 252N·m respectively, paired with a 6AT transmission and meeting China's National VI emission standards.
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Where is the tire pressure monitoring displayed on the Honda CR-V?

The tire pressure monitoring system in the Honda CR-V is a passive alert system, meaning you cannot directly view the specific tire pressure values. It will only trigger a warning light when abnormal tire pressure is detected. The purpose of the tire pressure monitoring system is to automatically and continuously monitor the tire pressure while driving, alerting the driver in case of tire leaks or low pressure to ensure driving safety. Here are some details about the vehicle: 1. The Honda CR-V measures 4585mm in length, 1855mm in width, and 1679mm in height, with a wheelbase of 2660mm. 2. The vehicle features a Dual Pump Real-Time 4WD system. Under normal conditions, it operates in front-wheel drive mode. However, when encountering slippery conditions such as rain, snow, or sand, the hydraulic system will distribute torque to the rear wheels to engage four-wheel drive until normal road conditions are restored.
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