Why Does an Automatic Transmission Car Shudder When Starting?
1 Answers
Automatic transmission cars may shudder during startup due to the following reasons: 1. Insufficient fuel supply at low throttle caused by clogged fuel lines; 2. Uneven engine operation due to blocked throttle valve restricting air intake; 3. Unstable engine performance from burnt high-tension wires or spark plug breakdown; 4. Abnormal transmission operation. Automatic transmissions eliminate the need for manual gear shifting by automatically selecting appropriate gears based on driving speed and traffic conditions, utilizing planetary gear mechanisms for speed variation. Solutions for addressing startup shudder in automatic transmission cars include: 1. Cleaning the throttle valve, fuel injectors, and fuel lines; 2. Inspecting electrical wiring or replacing spark plugs.