Why Does the Transmission Make Abnormal Noises When Downshifting at High RPM?

1 Answers
VonLeilani
07/30/25 3:26am
The causes of abnormal noises in the transmission are as follows: 1. Wear and damage of bearings: When bearings wear out, their clearance increases, leading to a decrease in fitting accuracy; when bearings are damaged, abnormal noises occur because the bearings cannot operate normally, which may even damage the transmission components and exacerbate the issue; 2. Low precision of components: This is caused by the wear of transmission components or the use of replacement parts with insufficient precision, such as excessive clearance between worn or newly replaced gears and the original gears; 3. Insufficient lubrication or excessively high oil viscosity leading to poor lubrication: In this case, the corresponding lubricating oil (grease) should be replaced, otherwise it will accelerate the wear of the transmission and shorten its service life; 4. Loose bolts on the transmission housing (end cover): Vibration during use can loosen the bolts, so regular inspections are necessary.
Was this review help?
14
1
Share
More Forum Discussions

What does it mean when the tire pressure warning light comes on?

The tire pressure warning light may come on due to insufficient tire pressure or damage. You should immediately get out of the car to check whether the tires are normal or have been punctured, causing air leakage. The tire pressure warning light is used to display the tire pressure status of the vehicle's tires. Under normal circumstances, this indicator light should be off. Tire pressure refers to the air pressure inside the tire. In car maintenance, the engine is the heart of the car, and engine damage will lead to the end of the car's life. Tire pressure is the blood pressure of the car, and the level of tire pressure plays a crucial role in the car's performance and power. Nowadays, many tires are not filled with air, and for these tires, the tire pressure requirements are relatively strict. For tires filled with air, the pressure is related to seasonal changes and is closely linked to the car's performance, such as comfort and load capacity, and can also affect the lifespan of the tires.
13
0
Share

What is the maximum speed of the Ford EcoSport in kilometers?

The Ford EcoSport has a top speed of 180 kilometers per hour. The EcoSport is the first compact SUV under Changan Ford, with body dimensions of 4345mm in length, 1785mm in width, and 1659mm in height. The interior of the Ford EcoSport features orange trim panels for a lively visual effect, along with up to 27 flexible and practical storage spaces to meet daily needs. Exterior-wise, the Ford EcoSport boasts a large chrome grille that leaves a lasting impression. The vehicle features blackened treatments on the headlights, sport grille, side window waistline, front and rear bumpers, roof rails, and more, complemented by 17-inch sport-style wheels with a smoked finish and exclusive sport badges to highlight its identity.
18
1
Share

What Are the Reasons for the Manual Trunk Not Opening?

Reasons for the manual trunk not opening are: 1. Linkage rod or lock cylinder issue: If the trunk is frequently opened with a key, the linkage rod may be broken. Visit a repair shop to get it fixed; 2. Not unlocked: The trunk may be difficult to open if it hasn't been unlocked with the remote key. Before opening, press the unlock button on the key or check if the key battery is dead; 3. Mechanical part failure: The trunk itself may have issues, such as a broken wire or other problems causing it not to open; 4. Five-door vehicles generally cannot be opened from inside: Some rugged off-road vehicles, to prevent accidental opening while driving, which could cause injuries or fatalities, usually do not have an internal trunk release. Therefore, the trunk can only be opened from outside.
11
4
Share

Can the Avalon use 95 octane gasoline?

Avalon can use 95 octane gasoline. The Avalon is a mid-size sedan under Toyota, equipped with naturally aspirated engines across all models. One is a 2.0-liter naturally aspirated engine, and the other is a 2.5-liter naturally aspirated engine. The 2.0-liter naturally aspirated engine delivers 178 horsepower and a maximum torque of 210 Nm; the 2.5-liter naturally aspirated engine produces 209 horsepower and a maximum torque of 250 Nm. In terms of body dimensions, the Avalon measures 4975mm in length, 1850mm in width, and 1450mm in height, with a wheelbase of 2870mm. For the interior, the Avalon features a 9-inch multimedia touch screen, and the multifunction steering wheel is wrapped in genuine leather. The instrument panel adopts traditional analog dials on both sides, with a 7-inch HUD head-up display in the center.
3
0
Share

How Often Should Run-Flat Tires Be Replaced?

Run-flat tires generally need to be replaced after approximately 5 years or 80,000 kilometers. The technical name for run-flat tires is "Tire Pressure Monitoring System", abbreviated as RSC. The sidewall of an inflated tire is the main part that supports the weight of the vehicle, especially for tires with a larger aspect ratio (the ratio of tire height to width), where the sidewall is very "thick". Run-flat tires are composed of the outer tire, standard inner tube, spare inner tube, steel rim, gas generator (or air storage chamber), pressure sensor, and control unit. RSC includes RSC tires mounted on EH2 rims and the TPI electronic warning system. Once the tire pressure begins to drop, RSC immediately alerts the driver. However, even if the tire pressure drops to zero, RSC can still ensure the tire remains securely fixed to the rim, allowing the vehicle to continue driving for a certain distance.
5
1
Share

How to start an Audi Q5?

Audi Q5 starting method: Enter the car, insert the smart key into the slot, press the brake pedal, then press the one-touch ignition button next to the gearshift to start. The Audi Q5 is a dynamic and versatile SUV with body dimensions of 4629mm in length, 1898mm in width, and 1655mm in height, and a wheelbase of 2807mm. In terms of exterior design, the Audi Q5 features a distinctive large grille front face, with an overall stylish and attractive appearance, complemented by smooth and flowing body lines. Under the hood, the Audi Q5 is equipped with a 2.0TFSI four-cylinder inline engine paired with a 7-speed Stronic dual-clutch transmission, delivering ample power output, smooth gear shifts, and quick acceleration.
2
2
Share
Cookie
Cookie Settings
© 2025 Servanan International Pte. Ltd.