Ford Taurus Ignition Coil Guide for 1986-1999 Models
Solve your Taurus misfires and rough running by choosing the right ignition coil for your specific engine.
- Identify your engine (2.5L, 3.0L Vulcan, 3.8L Essex, 3.0L Duratec, or 3.4L SHO) to get the correct coil.
- Early models (pre-1992) likely use a single coil, while later models use a coil pack.
- A bad coil causes misfires, rough idle, and will turn on the check engine light.
- It is highly recommended to replace spark plugs and wires at the same time as the ignition coil.
Understanding Your Taurus's Ignition System
The 1986-1999 Ford Taurus used different ignition systems depending on the model year and engine. It's crucial to know which system your car has before buying a new coil.
- 1986-1991: Most early models with engines like the 2.5L HSC four-cylinder and the 3.0L Vulcan V6 used a traditional ignition system. This setup includes a single canister-style ignition coil that works with a distributor to send spark to each cylinder.
- 1992-1999: Ford transitioned to a Distributorless Ignition System (DIS) in the early '90s. Instead of a single coil and distributor, these models use a single rectangular "coil pack." This pack houses multiple coils that fire the spark plugs in pairs (a system called "waste spark"). This design is common on the 3.0L Vulcan and 3.8L Essex V6 engines.
- Duratec & SHO V8: The more complex 3.0L DOHC "Duratec" V6 and the 3.4L V8 in the SHO models (1996-1999) also use a coil pack system, but the part is specific to those engines.
Common Symptoms of a Failing Ignition Coil
A bad ignition coil pack is a frequent issue on these cars, especially as they age. The plastic housing can crack from heat, allowing moisture in and spark to escape. 🎬 See how heat and moisture cause Ford coil pack failures. When the coil fails, you'll notice significant engine problems. Common signs include:
🎬 Watch this breakdown of common ignition coil failure symptoms.- Engine Misfires: The engine will sputter, shake, or jerk, especially when accelerating or idling. This is often most noticeable when the engine is under load, like going up a hill.
- Rough Idle: Your car may vibrate or shake when stopped at a light.
- Check Engine Light: A failing coil will trigger the check engine light. Common codes include P0300 (random misfire) or P0301-P0306 (misfire on a specific cylinder). You may also see codes P0351-P0356, which point directly to a fault in the coil's circuitry.
- Poor Fuel Economy: The engine burns more gas to compensate for the lack of power from the misfiring cylinder.
- Hard Starting or Stalling: The engine may be difficult to start or may stall unexpectedly.
Known Issues and TSBs
While no major recalls were found for ignition coils on 1986-1999 Taurus models, Ford has issued Technical Service Bulletins (TSBs) for related issues. For example, TSB 05-22-8 provides diagnostic tips for coil-on-plug systems, which applies to the 1996-1999 Taurus SHO. Another TSB, 13-4-17, addresses issues on later models where faulty coils could damage the Powertrain Control Module (PCM), requiring replacement of both components. This highlights the importance of addressing a bad coil promptly.
Choosing the Right Aftermarket Ignition Coil
When shopping for a replacement, you'll find a wide range of brands. While Motorcraft is the original Ford part, many aftermarket brands offer good quality and value.
Brand Quality Tiers
- OEM-Equivalent Brands: Brands like Delphi, NGK, and Denso are often original equipment suppliers to many automakers and have a strong reputation for quality and reliability. These are a safe bet for a long-lasting repair. Motorcraft is the Ford OEM brand and serves as the benchmark for fit and performance.
- Quality Aftermarket Brands: Standard Motor Products (SMP) and Spectra Premium are well-regarded in the aftermarket. They provide a good balance of price and quality, often meeting or exceeding OEM specifications.
- Economy Brands: Brands like DriveWire and other lower-priced options can be a good value for a budget repair. However, their long-term durability can sometimes be inconsistent compared to premium brands.
Pro Tip: Replace Plugs and Wires, Too
When you replace a coil pack, it's the perfect time to also replace your spark plugs and spark plug wires. Old, worn-out plugs and wires can put extra strain on a new coil pack, causing it to fail prematurely. Doing the whole job at once saves you time and ensures your ignition system is in top shape.
Replacement Cost
The cost for a new ignition coil for a 1986-1999 Taurus varies by brand and the specific part your car needs. The coil pack for a V6 will cost more than a single canister coil for an older four-cylinder.
| Part Type | Estimated Cost |
|---|---|
| New OEM (Motorcraft) | $70 - $150 |
| New Aftermarket | $23 - $120 |
| Shop Labor | $50 - $125 |
Frequently Asked Questions
How do I know if I need a single coil or a coil pack?
Generally, Taurus models from 1986 to about 1991 use a single, canister-shaped coil with a distributor. Models from 1992-1999 with V6 engines use a rectangular coil pack. Always verify by looking under your hood or using your vehicle's specific information when ordering.
Is it hard to replace a Taurus ignition coil?
For most 1986-1999 models, the replacement is straightforward. The coil pack is usually mounted on the engine or firewall and is held on by a few bolts. It's a DIY-friendly job for someone with basic tools, typically taking less than an hour.
🎬 Follow this step-by-step guide to replacing your Ford coil pack.What are the most common cylinders to misfire from a bad coil pack?
On the common V6 coil packs, forum discussions and mechanic videos frequently mention that the coil tower for cylinder #3 is a common failure point due to heat and cracking.
Should I use dielectric grease when installing the new coil?
Yes. Applying a small amount of dielectric grease to the inside of the spark plug wire boots helps seal out moisture and makes future removal easier. It also helps prevent the high-voltage spark from arcing to ground.
Helpful Videos
Technical Specifications
OEM Part Numbers: F5OY-12029-B F7LZ-12029-AA F1SZ-12029-A E6AZ-12029-A
Varies by engine. Early models use a single canister coil. 1992 and later models use a rectangular waste-spark coil pack with 3 or 4 towers for V6 engines.
We Have This Part in Stock
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.
- Ford Taurus:
- 🎬 Helpful Videos
- 🛍️ Shop This Part
- Understanding Your Taurus's Ignition System
- Common Symptoms of a Failing Ignition Coil
- Known Issues and TSBs
- Choosing the Right Aftermarket Ignition Coil
- Brand Quality Tiers
- Pro Tip: Replace Plugs and Wires, Too
- Replacement Cost
- Frequently Asked Questions
- 🎟️ Get 5% Off