What Causes a Buick Car to Stall While Driving?
1 Answers
Here is an introduction to the reasons why a Buick car may stall while driving: 1. Stalling caused by carbon deposits: This is an intake-related issue, specifically at the electronic throttle body. When there is excessive carbon buildup at the throttle body, releasing the accelerator pedal while driving may cause the engine to stall. This is more common in older vehicles. When the throttle is released, only a small gap remains for air to pass through. If this gap is clogged with carbon deposits, the amount of air entering the engine is significantly reduced, insufficient to maintain the air-fuel mixture needed for idling, leading to stalling. 2. Fuel supply failure: This is usually due to a faulty fuel pump that fails to deliver fuel. Fuel pumps generally have a long lifespan, so failures typically occur in older cars. Some fuel pumps fail when the car is parked, making it impossible to start the engine, while others fail while driving. Electrical failures, such as a damaged ignition coil, can result in no high-voltage electricity reaching the spark plugs. 3. Electronic component failure: For example, the engine control unit (ECU). All operations in the car are processed by the ECU. If it fails, no signals or commands are sent, causing many components to malfunction and leading to stalling.
