Why does the Buick Excelle shake a few times and then stall automatically?
2 Answers
The reasons for the Buick Excelle shaking and stalling upon startup are as follows: 1. First, rule out issues with fuel level and battery charge. Possible causes include the cold start injector not spraying fuel, coolant temperature sensor failure, intake sensor failure, poor injector atomization, carbon buildup in the intake manifold, insufficient ignition energy, spark plug failure, idle control valve failure, etc. 2. Poor fuel quality. Low-quality fuel often has poor volatility, especially in winter when temperatures are low. During cold starts, the engine block temperature is low, making fuel atomization difficult. This results in fuel injected into the cylinders not mixing sufficiently with air, leading to difficult starts or even failure to start.
When I was driving my Buick Excelle, I encountered a weird issue where the car would shake a few times upon starting and then stall, which was quite annoying. Generally speaking, the most common causes are spark plug issues or a faulty ignition coil, leading to engine misfires; a weak fuel pump might also cause fuel delivery interruptions; sometimes, an intake manifold leak or a clogged air filter can cause similar symptoms. Back then, I tried checking the spark plugs myself and found a few had turned black. Replacing them temporarily fixed the issue, but if the problem keeps recurring, it's best to visit a professional shop to avoid breaking down on the road and causing accidents. If left unfixed, such issues could damage the catalytic converter or the engine, leading to more expensive repairs. I recommend first checking the fuses and battery connections—if everything seems fine, take it to a dealership for diagnostics. After all, the Excelle has a lot of electronic components, and you wouldn’t want to mess them up.
