What are the symptoms of a faulty car temperature sensor?

2 Answers
BlakelyLee
07/24/25 9:29am
Symptoms of a faulty car temperature sensor: 1. When the car's temperature sensor is damaged, the engine will overheat, and a yellow coolant temperature warning light will appear on the dashboard to alert the driver to check it; 2. After the car's temperature sensor is damaged, the car may also experience difficulty starting when cold, because the car will determine that the engine oil and coolant temperatures are too low, preventing normal operation, making it hard to start the engine. The car temperature sensor controls the temperature of the engine oil and coolant, helping the engine run more efficiently. When the car temperature sensor is damaged, the normal operation of the engine will be affected, potentially leading to engine overheating. In such cases, it is necessary to promptly repair or replace the car's temperature sensor.
Was this review help?
10
4
Share
SanJace
08/11/25 4:49am
I've been driving for twenty years and have seen many cases of faulty temperature sensors. The symptoms are quite obvious: the coolant temperature gauge on the dashboard stops moving and always shows a low temperature, but the engine feels unusually hot; starting the car becomes particularly difficult, especially in cold weather, with severe engine shaking; the cooling fan may either run erratically or not at all, leading to engine overheating; fuel consumption spikes noticeably, costing several extra dollars per hundred kilometers. Behind these symptoms lies a faulty sensor causing the computer to misjudge the temperature, leading to improper control of the cooling system and fuel injection. I must say, if not detected early, this can easily cause cylinder scoring or even more severe damage. Now I make it a habit to regularly check my car and fix any abnormalities immediately.
Was this review help?
11
3
Share
Expand All
More Forum Discussions

Where is the Bluetooth button located on the 2014 Buick GL8?

The Bluetooth button for the Buick GL8 can be selected from the menu. The car Bluetooth system is designed based on wireless Bluetooth technology to provide a hands-free calling system inside the vehicle. The function of the car Bluetooth is to automatically recognize mobile phones, allowing connection without the need for cables or phone holders. The driver can control the phone without touching it, even keeping both hands on the steering wheel, using voice commands to answer or make calls. Below are the specific details about the Buick GL8: 1. Vehicle Positioning: The Buick GL8 is a mid-to-high-end MPV launched by SAIC-GM Buick. 2. Powertrain: This vehicle is equipped with a 2.0T SIDI direct-injection turbocharged engine, which delivers a maximum power of 191 kW and a maximum torque of 350 Nm. In terms of the transmission system, the engine is paired with a 6-speed automatic manual transmission. During operation, the engine can output its maximum power at 5,400 rpm and its maximum torque between 2,000 and 5,000 rpm.
3
1
Share

What Are the Consequences of Frozen Windshield Washer Fluid?

The consequences of frozen windshield washer fluid include potential damage to the washer motor. If the weather is sunny, you can park the car under direct sunlight at noon and open the hood to allow the sun to thaw the fluid. If the freezing is not severe, the fluid will eventually melt. If this method doesn't work, you can add some warm water to the washer fluid reservoir. Once the fluid thaws, drain it from the reservoir as soon as possible to prevent refreezing. Windshield washer fluid is made from deionized water and various eco-friendly additives, providing functions such as cleaning, water repellency, antifreeze protection, anti-static properties, and corrosion resistance. It quickly disperses rainwater on the windshield, ensuring clear visibility for drivers during heavy rainfall. Additionally, it neutralizes the electrical charges generated by friction between the windshield, wiper blades, and airborne particles, enhancing the glass's conductivity to resist static electricity and prevent dirt buildup that could obstruct the driver's view.
2
0
Share

Is it allowed to reverse on the road?

Reversing on the road is not allowed, otherwise you will be deducted 3 points. Here is the relevant introduction: 1. Regulations: Article 3 (9) of the "Scoring Standards for Road Traffic Safety Violations" states that driving a motor vehicle without following the rules for overtaking, yielding, or driving in reverse will result in a 3-point deduction for each violation. 2. Reversing: Reversing refers to the act of a motor vehicle moving backward. It also refers to people "transferring" during a trip, i.e., switching from one vehicle to another. Reversing is more difficult than driving forward, mainly because visibility is somewhat limited. During reversing, the speed should be kept at idle, and the vehicle body should be corrected in time. Each vehicle has different reference points, so the timing for turning the steering wheel varies.
3
2
Share

What Are the Secret Horn Signals Used by Experienced Drivers?

Car horn signals are as follows: 1. One short honk: This is the most common horn sound heard while driving. It can have multiple meanings, such as greeting an oncoming vehicle. If used when turning, it serves as a reminder for vehicles on the other side to drive carefully. 2. Two short honks: When hearing two honks, if they come from the vehicle ahead, it may indicate that the lead car intends to change lanes or is reminding the following vehicle not to tailgate. If the honks come from behind, it generally means the following vehicle wants to overtake. When overtaking, it's best to first signal the lead vehicle not to change lanes by using two short honks to draw attention to your intentions. 3. Three short honks: This situation mainly occurs on slopes, used to remind descending vehicles to yield right of way to ascending vehicles. It can also be used on poor road conditions to indicate urgent business by honking three times.
16
2
Share

Is driving against traffic a 6-point or 3-point deduction?

Driving a motor vehicle without following overtaking or yielding rules, or driving against traffic, results in a 3-point deduction; reversing, driving against traffic, or making a U-turn across the central divider on a highway results in a 12-point deduction. Driving against traffic is an extremely dangerous violation, and there is no concept of measuring the distance driven against traffic to determine whether it constitutes a violation. There are primarily three scenarios for motor vehicles driving against traffic: 1. On roads with solid dividing lines, motor vehicles entering the opposite lane. This includes double solid lines and single solid lines, which must not be crossed under any circumstances. 2. On roads with dashed dividing lines, it is possible to borrow the opposite lane for overtaking if it is safe, but if an accident occurs, the vehicle borrowing the lane will be deemed to be driving against traffic. 3. On roads marked as one-way, any motor vehicle entering is considered to be driving against traffic.
5
2
Share

What does internet in the car mean?

In-car internet refers to the use of next-generation information and communication technologies to achieve comprehensive network connectivity between the vehicle, the driver, other vehicles, the road, and service platforms, providing users with intelligent, comfortable, safe, energy-efficient, and efficient integrated services. According to the definition by the China IoT Industry-University-Research Alliance, the Internet of Vehicles (IoV) is a vast interactive network composed of information such as vehicle location, speed, and routes. Car owners can consider it a product combining the Internet of Things (IoT), intelligent transportation, vehicle information services, cloud computing, and automotive electronic technologies. Today, features familiar to car owners, such as autonomous driving, human-machine interaction, and intelligent voice recognition, are manifestations of the IoV. The Ministry of Industry and Information Technology and the National Standardization Management Committee recently issued guidelines to fully leverage the top-level design and foundational leadership of standards in building the IoV industry ecosystem. This will support the development of core technologies and an open, collaborative IoV industry, laying a solid foundation for autonomous driving.
8
1
Share
Cookie
Cookie Settings
© 2025 Servanan International Pte. Ltd.