Why does the Buick Excelle fail to start with the engine light on?
1 Answers
When a car malfunctions, it should be taken to a 4S shop for repair. Here are the detailed steps: 1. Check for fault codes: First, use the diagnostic computer at a repair shop or 4S shop to read the specific engine fault codes. If there are fault codes, perform corresponding repairs based on the specific codes. 2. No fault codes: If there are no fault codes, read the engine data, such as throttle opening, injector pulse width, etc. Clean the intake system, throttle, injector, and three-way catalytic converter of carbon deposits, and check the fuel pump pressure. Possible causes include insufficient battery power, dirty throttle, carbon deposits in the injector, weak starting, or insufficient fuel pump pressure. These points need to be checked.