How many kilometers should the Altima ignition coil be replaced?
2 Answers
The Altima ignition coil should be replaced approximately every 100,000 kilometers. The working principle of the ignition coil is as follows: it repeatedly stores and releases energy at different frequencies according to the engine's varying speeds. When the primary coil is connected to the power source, as the current increases, a magnetic field is generated around it, and the iron core stores the magnetic field energy. When the switching device disconnects the primary coil circuit, the magnetic field of the primary coil rapidly decays, and the secondary coil induces a high voltage. Taking the 2021 Altima as an example, it belongs to the mid-size car category, with body dimensions of: length 4901mm, width 1850mm, height 1450mm, a wheelbase of 2825mm, a fuel tank capacity of 61.3 liters, and a curb weight of 1456kg.
Hey, I know the ignition coil plays a crucial role in a car's ignition system. It's responsible for converting low-voltage electricity into high-voltage electricity to ignite the spark plugs, thereby starting the engine. For cars like the Nissan Teana, the official repair manual usually doesn't specify a fixed mileage for replacing the ignition coil; it's more of a case-by-case component. Based on my experience, most cars, including the Teana, can go about 80,000 to 120,000 kilometers before the ignition coil starts causing problems. However, it really depends on your driving habits—like frequent driving in congested urban areas or uphill roads, where the load is higher and wear is faster. If the ignition coil fails, the symptoms are obvious: the engine will shake violently, acceleration will feel weak, dashboard lights may come on, or fuel consumption may suddenly increase. I recommend not waiting until problems arise. Have a technician regularly check the resistance value or look for visible cracks during maintenance, and replace it if it's faulty. Replacing a bad coil can restore performance and protect the engine, so keeping an eye on it is beneficial. The cost of replacement isn't high—just opt for OEM or reliable brand parts, and avoid cheap knockoffs that could affect longevity.
