California summers can be intense, and sometimes, so is the effect of that heat on your vehicle. At Chevrolet Van Nuys, we've seen drivers have difficulty starting their cars on hot days, because high temperatures can impact several of your car’s vital systems. Understanding the causes and Chevrolet service remedies can help you prevent no-start scenarios and keep your vehicle running reliably all summer long.
Battery Strain
Your battery is especially vulnerable to extreme heat. High temperatures can cause battery fluid to evaporate, leading to a lower charge capacity. Heat also accelerates internal corrosion, which shortens the overall lifespan of the battery. Even a newer battery might struggle to provide a strong enough charge in hot conditions, especially if it’s already near the end of its life cycle.
Vapor Lock
Vapor lock is a condition that tends to affect older vehicles more frequently, but it can still occur in modern engines under certain conditions. When fuel in the lines vaporizes before reaching the engine, it creates a blockage that prevents liquid fuel from moving forward. This makes it difficult—or even impossible—for the car to start until the engine cools down. Long idling times or repeated short trips on hot days can increase this risk.
Malfunctioning Starter
The starter motor is essential for cranking your engine, but it can become less reliable in hot weather. Heat increases electrical resistance in the starter’s components and wiring, which can make it harder for the motor to function efficiently. If your starter is already showing signs of wear, like slow cranking or clicking noises, it might fail altogether during a heatwave.
Fuel Pump Failure
Fuel pumps are complex systems that combine electrical and mechanical components. Overheating can cause them to seize or degrade temporarily, particularly in older vehicles. Symptoms of a failing fuel pump may include engine sputtering, loss of power, or complete failure to start. If left unaddressed, this could lead to more costly repairs down the line.
Sensor and Relay Issues
Modern vehicles, including Chevrolet models, use a variety of sensors and electronic relays to manage ignition and fuel systems. When these components overheat, they can temporarily malfunction or lose communication with the vehicle’s computer. Common symptoms include crank-no-start conditions or erratic engine behavior.
Schedule Chevrolet Maintenance and Repairs in Van Nuys, CA
If you're having trouble starting your car on hot days, bring it to the Chevrolet Van Nuys service center. Our certified technicians can quickly diagnose the issue using factory-grade diagnostics and get you back on the road, cool, calm, and confident. Don’t let summer heat sideline your vehicle. Book your service appointment today.