A Comprehensive Guide to the 2005-2016 Nissan Armada Ignition Coil
Experiencing engine misfires or a rough idle in your Armada? A failing ignition coil is the likely culprit.
- A failing ignition coil is a very common cause of misfires (P0300-P0308), rough idle, and power loss in the 2005-2016 Armada.
- Before replacing coils, inspect the negative battery cable for damage, as a known TSB indicates this can cause coil failure.
- For best results, stick with OEM (Hitachi) or premium aftermarket brands like NGK, Delphi, or Denso to avoid premature failure.
- It is strongly recommended to replace all eight ignition coils and spark plugs at the same time for balanced performance and long-term reliability.
Is Your Armada's Ignition Coil Failing?
Ignition coil failure is a common issue on the Nissan Armada as it ages. When a coil starts to go bad, it can't deliver the strong spark needed for proper combustion. This leads to a variety of noticeable engine problems. Ignoring these symptoms can lead to more expensive repairs down the road, including damage to your catalytic converters.
Common Symptoms of a Bad Ignition Coil:
- Check Engine Light: This is often the first sign. The light will illuminate and store a trouble code, typically for an engine misfire (codes P0300 through P0308).
- Rough Idle and Engine Vibration: Your Armada may shake or vibrate noticeably when stopped or at low speeds. This is caused by one or more cylinders not firing correctly.
- Poor Acceleration and Power Loss: With less power being produced, your truck will feel sluggish and weak when you try to accelerate.
- Reduced Fuel Economy: When the engine isn't burning fuel efficiently due to a weak spark, your gas mileage will suffer.
- Engine Stuttering or Hesitation: During acceleration, the engine may hesitate or stumble as the faulty coil fails to provide a consistent spark.
A Known Issue: Check Your Battery Cable First!
There is a known issue covered by a Technical Service Bulletin (TSB) where a poor ground connection on the negative battery cable can cause electrical interference. This can lead to a random misfire code (P0300) and can even damage the ignition coils, causing them to look blistered or melted. Before replacing coils, inspect the negative battery cable where it connects to the transmission. If it's loose or frayed, it must be replaced to prevent repeat failure of your new coils.
Choosing the Right Aftermarket Ignition Coil
When it comes to ignition parts for your Armada, quality matters. While budget-friendly options are tempting, especially when buying eight, poor quality coils can fail quickly, forcing you to do the job all over again. It is highly recommended to replace all eight coils at the same time, along with the spark plugs, to ensure balanced engine performance and prevent future issues.
Aftermarket Brand Tiers for Nissan Armada
- Tier 1: OEM & Premium Brands (Hitachi, NGK, Delphi, Denso): Hitachi was the Original Equipment Manufacturer (OEM) for many Nissan vehicles, making it a top choice for a direct replacement. NGK, Delphi, and Denso are also highly respected brands known for their reliability and performance, often meeting or exceeding OEM specifications. Choosing a brand from this tier is your best bet for longevity and peace of mind.
- Tier 2: Reputable Aftermarket Brands (Standard Ignition, Hella, WAI Global, Walker Products): These brands have a long history in the aftermarket and offer a good balance of quality and value. They are a solid choice if premium brands are outside your budget.
- Tier 3: Economy Brands (DriveWire, Holstein, Motorad, and others): These brands offer the lowest price point, often sold in complete sets of eight. While attractive for their cost savings, they may not have the same durability or quality control as higher-tier brands, potentially leading to a shorter service life.
Pro Tip: To diagnose a specific bad coil, you can swap the suspected faulty coil with one from a known good cylinder. For example, if you have a P0308 code (cylinder 8 misfire), swap the coil from cylinder 8 with the coil from cylinder 1. Clear the codes and run the engine. If the code changes to P0301, you've confirmed the coil is the problem.
Cost of Replacing Ignition Coils on a 2005-2016 Armada
| Part Type | Cost per Coil | Cost for Set of 8 |
|---|---|---|
| New OEM (Hitachi) | $90 - $150 | $720 - $1200 |
| New Aftermarket (Premium) | $60 - $100 | $480 - $800 |
| New Aftermarket (Value) | $30 - $55 | $240 - $440 |
| Shop Labor | $150 - $350 | |
Frequently Asked Questions
Is it hard to replace the ignition coils on an Armada?
No, it is a relatively easy job for a DIYer with basic tools. Each coil is held on by a single 10mm bolt. The main challenge is accessing the rearmost coils, which may be in a tight space, but no major engine components need to be removed.
Should I replace all 8 ignition coils at once?
Yes. If one coil has failed due to age and heat, the others are likely not far behind. Replacing all eight at once ensures reliability and balanced performance across all cylinders. It's also the perfect time to install new spark plugs.
Do I need to put grease on the new ignition coils?
Yes, it is highly recommended to apply a small amount of dielectric grease to the inside of the coil boot before installing it. This helps seal out moisture and makes it easier to remove the coil in the future.
What are the misfire codes for my Armada?
A general or random misfire is code P0300. A specific cylinder misfire is coded from P0301 to P0308, with the last digit indicating the cylinder number (e.g., P0308 is a misfire on cylinder 8).
Helpful Videos
Technical Specifications
OEM Part Numbers: 22448-ZE00A 22448-8J115 UF551 UF510
Engine Type: 5.6L V8 (VK56DE), Ignition System: Coil-on-Plug (COP), Quantity Required: 8
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The information in this article is provided for general reference and educational purposes only. Vehicle specifications, procedures, and part compatibility can vary by production date, trim level, and region. Always consult your vehicle's factory service manual and verify part numbers before purchasing or performing repairs. Safety-critical components such as airbags, seat belts, and braking systems should be installed by a qualified professional.
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- Is Your Armada's Ignition Coil Failing?
- Common Symptoms of a Bad Ignition Coil:
- A Known Issue: Check Your Battery Cable First!
- Choosing the Right Aftermarket Ignition Coil
- Aftermarket Brand Tiers for Nissan Armada
- Cost of Replacing Ignition Coils on a 2005-2016 Armada
- Frequently Asked Questions
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