Q
why is my engine light on after oil change
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Yes, Advance Auto Parts offers a free service to check engine lights, known as a "Free Check Engine Light Scanning" service. This is particularly helpful for car owners who notice their check engine light has come on but do not have the tools or expertise to diagnose the issue themselves. The service typically involves using an OBD-II scanner, which plugs into your vehicle's onboard computer to read diagnostic trouble codes. This can give you a preliminary idea of what might be wrong with your vehicle. However, it's important to note that while this service provides codes, interpreting them accurately often requires further professional diagnostics. After receiving your codes, you might still need to visit a mechanic for a more detailed diagnosis and repair. Always consult with a professional to understand the severity of the issue indicated by the check engine light.
Driving approximately 30 to 100 miles is generally required to reset the check engine light through a process known as an OBD-II drive cycle. This range varies significantly based on the vehicle's make, model, and the specific issue that triggered the light. During the drive cycle, the car's onboard diagnostics system performs checks on various systems, including emissions controls, sensor operations, and fuel system status, to ensure all is functioning properly. It's essential to operate the vehicle under a variety of conditions, such as highway speeds, stop-and-go traffic, and idling, to complete a full drive cycle. However, if the issue that caused the check engine light to turn on initially hasn't been resolved, the light will remain on or reappear. Thus, it's advisable to diagnose and fix the underlying problem—potentially with the help of a professional mechanic—before attempting to reset the check engine light through driving.
Yes, you can put air in nitrogen-filled tires without causing any harm. Nitrogen is used in tires because it's less likely to seep through the tire walls than oxygen, offering more consistent tire pressure over time and slightly better fuel efficiency. However, in everyday use, especially for passenger vehicles, the benefits are minimal. If your tires are low and you only have access to regular compressed air, it's perfectly okay to top them up. The mixture of nitrogen and oxygen won't cause any issues. It’s more important to maintain proper tire pressure for safety and performance than to worry about the type of gas inside.
While it is possible to inject air into a tire already filled with nitrogen. doing so will decrease the effectiveness of nitrogen-filled tires. Typically containing 78% nitrogen. 21% oxygen. and 1% other gases. regular air is not as ideal for tire use due to its tendency to pass through rubber more easily. This can result in less stable tire pressure over time. If you opt for nitrogen-filled tires and need to refill them. experts advise sticking with nitrogen whenever possible.
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