···
Log in / Register

What Causes an Automatic Transmission Car Not to Shift Gears?

1Answers
VonRuth
09/02/2025, 12:13:57 AM

Reasons why an automatic transmission car cannot engage gears: gear lock, or not fully braking when parking, directly shifting into P gear, causing gear braking instead of brake braking. Automatic transmission means the driver does not need to manually shift gears; the vehicle will automatically select the appropriate gear based on driving speed and traffic conditions. Gear Introduction: Generally, there are six automatic transmission gears: P, R, N, D, S, L. Automatic Transmission Introduction: Automatic transmission uses an automatic gearbox, employing planetary gear mechanisms for shifting, which can automatically change gears based on the degree of the accelerator pedal and changes in vehicle speed. Driving an automatic transmission car only requires using the parking gear P, reverse gear R, neutral gear N, and drive gear D, which can fully meet the needs of general driving.

Was this review help?
110
Share
More Q&A

What is the working principle of an automotive transmission?

Transmissions are divided into manual and automatic types, and their working principles are as follows: 1. A manual transmission shifts gears by moving the gear lever, switching the driving gears on the intermediate shaft, and combining with the power output shaft through different gear sizes to change the torque and speed of the driving wheels. 2. In an automatic transmission, the pump wheel rotates the turbine through fluid, and a stator is added between the pump wheel and the turbine. By utilizing the reaction force, a speed difference between the pump wheel and the turbine is achieved, enabling speed and torque conversion. Since the torque converter's automatic speed and torque conversion range is not sufficiently wide, several rows of planetary gears are connected in series behind the turbine to improve efficiency. The hydraulic control system automatically operates the planetary gears in response to changes in the engine's operation, thereby achieving automatic speed and torque conversion.
102
Share

Where is the diagnostic socket located on the Peugeot 307?

The diagnostic socket on the newer model Peugeot 307 is located beneath the center console, under a component resembling an ashtray. After removing this component, you will find a rubber cover. Lifting this rubber cover reveals the socket. On older models of the Peugeot 307, the diagnostic socket is situated on the left side of the steering wheel, below the air conditioning vent, behind a decorative panel. Opening this panel will expose the socket. Here is some information about the Peugeot 307: 1. The Peugeot 307 is a compact car equipped with two engine options: a 1.6-liter naturally aspirated engine and a 2.0-liter naturally aspirated engine. The 1.6-liter engine delivers a maximum power of 86 kW and a maximum torque of 150 Nm, paired with either a 5-speed manual transmission or a 4-speed automatic transmission. 2. The 2.0-liter naturally aspirated engine produces a maximum power of 108 kW and a maximum torque of 200 Nm, also paired with a 5-speed manual transmission or a 4-speed automatic transmission. The Peugeot 307 features a MacPherson strut front suspension and a torsion beam rear suspension.
111
Share

How to Deal with a Dropped Car Roof Lining?

The method to handle a dropped car roof lining is: 1. Clean the detached part of the roof lining thoroughly. 2. Apply polyurethane adhesive evenly on the detached part. 3. Press the detached roof lining back into place and let it dry. Introduction to Car Roof Lining: The car roof lining is an important component of the vehicle's ceiling, serving to enhance the interior decoration. It improves insulation from external heat, reduces interior noise, enhances sound absorption, and increases the comfort and safety of the driver and passengers. Types of Car Roof Lining: 1. PVC artificial leather. 2. Non-woven fabric. 3. Knitted fabric.
110
Share

How Many Training Hours Are Required for Subject Four?

Subject Four does not require training hours. The driving license training hours only apply to Subject One, Subject Two, and Subject Three. 1. Subject One has 12 hours of theoretical training. 2. Subject Two has 2 hours of theoretical training and 32 hours of practical training, totaling 34 hours. 3. Subject Three has 12 hours of theoretical training and 24 hours of practical training, totaling 36 hours. The maximum daily theoretical training is 4 hours; any training exceeding 4 hours will be counted as 4 hours. The content of the Subject Four exam is as follows: 1. Depending on the type of driving license, 50 questions are randomly selected from the corresponding Subject Four exam question bank, with each question worth 2 points. 2. The exam duration is 45 minutes, and making 12 points worth of mistakes (6 questions) will terminate the exam. 3. The exam includes true/false questions (questions 1-22), single-choice questions (questions 23-45), and multiple-choice questions (questions 46-50). 4. The exam questions include picture-based questions, scenario recognition questions, and text-based questions.
108
Share

How to Reset Unstable Tire Pressure?

To reset unstable tire pressure, follow these steps: 1. Press the brake pedal to prepare for starting the engine. 2. Press the one-button start to ignite the engine. 3. Ensure all dashboard lights are on, confirming the vehicle's electronic systems are powered. 4. Inflate all four tires to equalize their pressure. 5. Press the tire pressure reset button to complete the process. Steps for checking car tire pressure: 1. Locate the tire valve stem and prepare a tire pressure gauge. 2. Attach the gauge to the valve stem to measure pressure. 3. Replace the valve cap after inspection.
116
Share

How to Remove the Car Air Conditioning Filter?

Car air conditioning filter removal steps are as follows: 1. Pull outward the fixed handle on the left side of the vehicle's glove compartment and remove the buckle from the handle. 2. Use both hands to pull the glove compartment simultaneously, and the glove compartment can be taken out. 3. After removing the glove compartment, the air conditioning filter can be seen. Press firmly on the filter's fixing buckle to remove the air conditioning filter. The car air conditioning filter is a specialized filter designed for air purification inside the car cabin, made of high-efficiency adsorption material activated carbon and long-fiber non-woven fabric composite activated carbon filter cloth. It has a compact structure and can effectively filter smoke odors, pollen, dust, harmful gases, and various odors.
108
Share
Cookie
Cookie Settings
© 2025 Servanan International Pte. Ltd.