What Causes the Squeaking Noise During Cold Start of a Sedan?

2 Answers
MaliaFitz
07/28/25 9:26pm
Squeaking noise during cold start of a sedan may be caused by a malfunction in the carbon brushes inside the starter motor. Below is more information about cold starts in sedans: 1. High idle speed during cold start is to allow the car to quickly reach normal operating temperature. After warming up, the idle speed will return to normal. 2. During cold start, the temperature of the coolant and exhaust pipe is low. At this time, the air-fuel mixture is rich, and some of it cannot be fully burned and is discharged through the exhaust pipe, resulting in a stronger gasoline smell. 3. Excessive carbon deposits in the intake system or at the root of the intake valves, as well as the starter motor not reaching the required speed, can all cause difficulties during cold starts of a sedan.
Was this review help?
18
0
Share
LeJuliette
08/12/25 2:04am
My old car had the same issue. The squealing noise during cold starts is most likely due to an aged and loose belt. In cold weather, the rubber hardens, causing friction between the belt and pulleys when starting. It's easy to check yourself: open the engine bay and lightly apply soapy water to the belt surface while starting. If the noise disappears, it means the belt needs replacing. Also, prolonged vehicle inactivity can worsen this issue—my neighbor left his car in the garage for three months during the pandemic, and the belt cracked completely. It's recommended to check belt tension every 40,000 km. Ignoring small issues might damage the alternator. Nowadays, replacement belts are easy to buy, and a repair shop can fix it in half an hour while also checking other pulley components for free.
Was this review help?
12
4
Share
Expand All
More Forum Discussions

Can I continue driving after my C1 driver's license has been deducted 12 points?

C1 driver's license holders cannot continue driving after being deducted 12 points. The following are the specific steps to retrieve the license after it has been fully deducted: 1. Registration for study: The driver needs to bring the "Admission Notice" to register at the school and participate in the study. If the driver finds out through inquiry that the points have been fully deducted, they can also bring the driver's license to register, which is equally valid. 2. Study courses: The courses include road violation scoring and penalties, driver's psychological quality and traffic safety, road traffic safety laws and regulations, etc. 3. Passing the test and retrieving the license: After the motor vehicle driver participates in the study, the vehicle management department should conduct a test on road traffic safety laws, regulations, and related knowledge within 20 days. If the test is passed, the points will be cleared, and the motor vehicle driver's license will be returned.
1
5
Share

Does the Excelle have an automatic window closing feature when locking the car?

The Buick Excelle does have an automatic window closing feature when locking the car. To activate it, simply hold down the lock button, and the windows will automatically roll up. The new Excelle adopts the latest family-style design language and introduces the General Motors' new-generation 1.3T/1.0T Ecotec dual-injection turbocharged engines for the first time. It is equipped with the iteratively upgraded Buick eConnect connectivity technology, featuring a newly designed in-car human-machine interface that supports cloud-centered connected applications and services. In terms of exterior design, the new Excelle features a fresh winged chrome grille, winged LED automatic sensing headlights, winged LED taillights, dual-peak body character lines, ultra-wide-view exterior rearview mirrors, and 16-inch dual five-spoke luxury two-tone aluminum alloy wheels. For the interior, it boasts a 360-degree wraparound integrated design with high-touch interior materials. It comes with a three-spoke multifunction steering wheel, ice-blue sporty instrument panel, fully automatic air conditioning system, one-touch start function, rear air conditioning vents, and a flexible 400L luggage compartment.
9
4
Share

What is the fuel tank capacity of the Kia Cerato in liters?

The fuel tank capacity of the Kia Cerato is 55 liters. It is equipped with either a 1.6-liter naturally aspirated engine or a 1.8-liter naturally aspirated engine, paired with a five-speed manual transmission or a four-speed automatic transmission. The vehicle features front-wheel drive across all models. In comparison to similar models, the 2022 Nissan Sylphy has a fuel tank capacity of 52 liters, the Volkswagen Bora has a fuel tank capacity of 50 liters across all models, and the Volkswagen Lavida has a fuel tank capacity of 55 liters. During the actual refueling process, the amount of fuel may exceed the marked capacity. This is because the fuel tank capacity specified by the manufacturer is measured from the bottom of the tank to the safety limit. There is additional space from the safety limit to the tank opening, which is designed to allow for fuel expansion due to temperature increases without causing overflow. If fuel is filled up to the tank opening during refueling, the actual amount of fuel added may exceed the marked capacity. To check the remaining fuel level, drivers can observe the fuel gauge on the right side of the dashboard, which is marked with 'E' and 'F'. When the needle is close to 'E', it indicates low fuel, and when it is near 'F', it means the fuel level is sufficient.
8
5
Share

Is It Normal for the Steering Gear of BYD Tang to Malfunction?

The malfunction of the steering gear in the BYD Tang is caused by loose or detached connectors. Below is a detailed introduction regarding the steering gear malfunction in the BYD Tang: The manifestations of the steering gear malfunction in the BYD Tang include: difficulty in the steering wheel returning to position; shaking or deviation of the steering direction; uneven steering wheel resistance; oil leakage from the steering gear; and abnormal noises from the steering gear. The steering gear amplifies the force transmitted from the steering wheel to the steering mechanism and changes the direction of force transmission. It can be classified into various types based on structural design. Taking the BYD Tang 2021 2.0T Automatic Flagship model as an example, its body dimensions are 4870mm in length, 1940mm in width, and 1720mm in height, with a wheelbase of 2820mm. It features front-wheel drive, a front suspension type of MacPherson independent suspension, and a rear suspension type of multi-link independent suspension. Solution: First, check whether the connectors are loose or detached, especially the motor and ECU connectors. Upon inspection, the connectors are found to be normal and free of faults. Then, use VDS1000 to check for any upgrade or update items related to the motor. After scanning, three fault codes are found in the electronic steering system: torque sensor fault; steering angle signal fault; and motor overcurrent fault. Analyze the common points of these three faults. From the third fault, it appears to be a poor grounding issue. By consulting the circuit diagram, it is found that these three faults intersect. Upon locating the motor grounding point, it is discovered that the presence of electrocoating paint on the screw causes poor grounding. After grinding and reassembling for a test drive, the fault persists. Reading the fault codes again reveals that the motor overcurrent fault still exists. It is initially analyzed as a motor fault, but upon rechecking the grounding point, it is found that there is a protrusion on the welding point of the grounding point, and only a single contact point on the attachment surface of the wire clip, indicating poor grounding.
12
0
Share

How to use the cruise control in Audi Q5L?

Audi Q5L's cruise control is used as follows: The cruise control switch is located on the lower left side of the steering wheel. Press the top button on the cruise control lever to activate cruise control. The 'speed' button is for adjusting the speed—lifting it increases the speed value, while pressing it down decreases the speed value. The 'lim' button at the top is for setting the speed limit. Pushing the lever inward cancels the cruise, pushing it one more notch turns off the cruise, and pulling it outward restores the set cruising speed. Taking the 2020 Audi Q5L as an example, it is a mid-size SUV with the following dimensions: length 4753mm, width 1893mm, height 1659mm, wheelbase 2908mm, fuel tank capacity 73L, and curb weight 1855kg.
3
1
Share

What are the precautions for using windshield wipers?

Precautions for using windshield wipers are: 1. When driving in congested areas, avoid frequent operation of the wipers to prevent distraction and potential vehicle collisions; 2. Do not let the wipers scrape the glass dry, as this can cause the wiper rubber to age and harden, or allow sand and debris to adhere to the windshield, which can scratch the glass and cause irreparable damage. The function of windshield wipers is to remove raindrops and dust attached to the vehicle's windshield, improving the driver's visibility and enhancing driving safety. The method for replacing windshield wipers is: 1. Lift the wiper upright; 2. Press the clip below and remove the wiper rubber; 3. Take off the old wiper; 4. Lift the front end of the middle clip; 5. Insert the new wiper into the middle clip, pull it tight by hand, and the replacement is complete when you hear a clicking sound.
2
2
Share
Cookie
Cookie Settings
© 2025 Servanan International Pte. Ltd.