What Causes the Chery Tiggo 3 to Occasionally Fail to Accelerate?
2 Answers
Tiggo 3's unresponsive throttle may indicate an abnormality in the vehicle's power system. The engine's power is generated through the coordinated operation of the intake system, ignition system, and fuel system. If any of these components malfunction, it can lead to a decrease in engine power, resulting in symptoms such as unresponsive throttle, body shaking, or smoke from the exhaust. Below are relevant details: 1. Throttle: The throttle of a car engine, typically controlled by a pedal (also known as the accelerator pedal), is a device that regulates fuel supply to the engine. When operating the throttle pedal, place your right heel on the floor of the driver's compartment as a pivot, gently press the accelerator with the ball of your foot, and use ankle movements to press or release. Apply force softly, ensuring smooth and gradual pressing and releasing. 2. Precautions: When starting the engine, avoid pressing the throttle pedal all the way down; it's better to keep it slightly above the idle throttle. During startup, it's advisable to apply a bit of throttle just before the clutch engagement point, with the throttle opening kept at a moderate level. Coordinate the release of the clutch with pressing the throttle promptly and smoothly.
I've been driving a Tiggo 3 for several years and have also experienced sudden loss of throttle response. There are quite a few possible causes, such as a faulty throttle position sensor, which sends signals to the ECU. If it gets dirty or damaged, the signals become erratic. Sometimes it's a fuel system issue—an aging fuel pump failing to deliver enough fuel, especially noticeable during cold starts. Carbon buildup in the throttle body blocking the air intake can also affect acceleration response. Don’t overlook minor electronic control system problems, like loose wiring harness connectors that may lose signal on bumpy roads. I recommend first checking the air filter and fuel filter for clogs—replacing them is inexpensive. Developing a habit of warming up the car before driving can help reduce sudden throttle issues. If it happens frequently, it’s best to take the car to a repair shop for a diagnostic scan to avoid guessing and replacing parts blindly. Safety first—if it occurs, pull over and don’t risk pressing the throttle hard.
