Parts for your 2017 Holden Commodore-Ignition leads

Ignition Leads and the 2017 Holden Commodore: What You Need to Know

When it comes to the 2017 Holden Commodore, ignition leads are a subject that often raises questions. For those unfamiliar, ignition leads, also called spark plug wires, are traditionally used in vehicles with distributor-based ignition systems to carry the electrical current from the ignition coil to the spark plugs. However, in the case of the 2017 Commodore, ignition leads are actually not a relevant component.

The reason ignition leads are not used on the 2017 Holden Commodore comes down to the type of ignition technology the vehicle employs. From technical sources and factory specifications, the 2017 Holden Commodore utilises a modern coil-on-plug (COP) ignition system rather than a traditional distributor ignition. This means each spark plug has its own dedicated ignition coil mounted directly on top of it. Because the coil is right at the plug, there's no need to run high-voltage electrical current along separate wires, thus eliminating the use for ignition leads altogether.

Coil-on-plug systems offer a number of advantages over the older ignition lead setup. They provide a more efficient electrical path, reduce the risk of misfires, and improve reliability. Without the need for long wires carrying high voltage, the ignition system is more compact and less prone to interference or degradation over time, which can be common problems with traditional ignition leads.

Since the 2017 Holden Commodore runs a coil-on-plug system, it is fitted with ignition coils instead of ignition leads. This has an impact on servicing and maintenance routines. Unlike older vehicles where ignition leads would need regular inspection and occasional replacement due to cracking, wear, or corrosion, the 2017 Commodore's ignition maintenance focuses more on checking and, if necessary, swapping out ignition coils or spark plugs.

That said, understanding the role ignition leads played in earlier vehicles can be helpful in appreciating modern ignition technology. Ignition leads acted like electrical highways for the spark, ensuring the current generated by the ignition coil reached the spark plug without leakage or loss of power. Faulty ignition leads could cause rough idling, poor fuel efficiency, and difficulties starting the engine - issues that can be avoided by the more reliable coil-on-plug setup found in the 2017 Commodore.

For those servicing their 2017 Holden Commodore, it's a good idea to concentrate on the ignition coils and spark plugs instead of hunting for ignition leads. Ignition coils in these vehicles are designed to be fairly robust, but they can fail over time due to heat and electrical load. Symptoms of a failing ignition coil include engine misfires, loss of power, and the check engine light coming on.

When performing routine maintenance, spark plugs are generally replaced at recommended intervals to maintain optimal engine performance. Since the coil sits right on top of the spark plug, the ignition coil usually needs to be removed first during this process. Many mechanics will take the opportunity to inspect ignition coils for signs of wear such as cracked casings, corrosion on electrical connectors, or internal damage.

In some cases, replacing an ignition coil is a straightforward job that can be done by a confident DIYer, but often it's best left to professionals who have the right tools and diagnostic equipment. Because the coils are electronically controlled, any faulty coil will usually trigger the engine management system and set off a warning on the dash.

In summary, when talking about ignition leads in the context of the 2017 Holden Commodore, it is important to know that this part simply isn't fitted to the vehicle. Instead, the car is equipped with a coil-on-plug system that eliminates the need for ignition leads altogether. This modern setup improves reliability, reduces maintenance hassle, and provides better overall ignition performance.

For owners, this means servicing focuses on checking ignition coils and spark plugs rather than ignition leads. Keeping those components healthy is key to ensuring smooth running, responsive performance, and avoiding the annoying misfire issues that older vehicles sometimes had because of worn ignition leads.

The shift away from ignition leads is an example of how automotive technology continuously evolves, making vehicles like the 2017 Holden Commodore more dependable and easier to maintain. While it might seem minor, not having ignition leads is part of what keeps this vehicle running strong even as it racks up the kilometres on Aussie roads.