Ignition Coil Replacement Guide for the 1981-1990 Isuzu Pickup
Get the right part to fix stalling, misfires, or a no-start issue on your classic Isuzu truck.
- A no-spark condition can also be caused by the igniter or distributor pickup coil; diagnose before replacing parts.
- For reliability, choose a well-known aftermarket brand like NGK, Delphi, or Standard Ignition (SMP).
- Replacement is a very simple DIY job that can be done in under 30 minutes with basic tools.
- Original Isuzu (OEM) coils are generally unavailable; quality aftermarket parts are the standard replacement.
Is Your Ignition Coil Failing?
On the 1981-1990 Isuzu Pickup, the ignition system uses a single, external coil. When this part starts to fail, the symptoms are usually obvious. Because it's a single point of failure for the entire ignition system, a bad coil will affect all cylinders.
- No Start: The most common and severe symptom. The engine will crank but won't fire up because there's no spark.
- Sudden Stalling: The truck may run for a while and then suddenly die as the coil overheats and fails. It might restart after cooling down, only to stall again.
- Engine Misfires and Rough Idle: A weak or inconsistent spark can cause the engine to run poorly, shake at idle, and hesitate during acceleration.
- Loss of Power: You may notice the truck feels sluggish and struggles to get up to speed.
- Gas Smell: If the coil isn't providing enough spark to burn the fuel, raw fuel can pass through the engine and out the exhaust, creating a noticeable gas smell.
Could It Be Something Else?
A "no-spark" condition isn't always the coil's fault. These trucks also have an ignition control module (or "igniter") and a pickup coil inside the distributor that can fail and produce identical symptoms. In one documented case, 🎬 Watch: How to find and replace the ignition control module a bad igniter caused a new ignition coil to fail immediately. It's wise to test the system before simply replacing the coil.
🎬 Watch: How to test your ignition coil with a multimeterChoosing the Right Aftermarket Ignition Coil
Original Equipment (OEM) Isuzu coils for this generation are largely discontinued and unavailable. The good news is that many aftermarket companies produce high-quality replacements that meet or exceed the original specifications. Here’s how the available brands generally stack up:
- Premium OE-Match Brands (Recommended): Brands like NGK, Delphi, and Standard Ignition (SMP) are well-respected manufacturers that often supply the original parts to carmakers. They are known for reliability and durability, making them a top choice for a critical part like an ignition coil.
- Standard Aftermarket Brands: Companies like WAI Global and Walker Products offer a good balance of quality and value. They are reliable choices for daily drivers and are often more affordable than premium brands.
- Economy Brands: Brands such as DriveWire, Skyward, and Global Parts are budget-friendly options. While they will get your truck running, their long-term durability may not match that of the premium or standard tiers.
- Performance Brands: A brand like Accel specializes in high-output ignition components. While a good quality part, it may be unnecessary for a stock engine.
How to Replace the Ignition Coil
Replacing the ignition coil on an 80s Isuzu Pickup is one of the easiest jobs you can do. It's a great task for a beginner DIYer and requires only basic hand tools.
- Locate the Coil: It's a canister-shaped part usually mounted to the fender well or firewall in the engine bay.
- Disconnect the Battery: Always disconnect the negative battery terminal before working on electrical components.
- Disconnect Wires: Unplug the small electrical connector and the main high-tension wire that goes to the distributor.
- Unbolt the Coil: Remove the bolts holding the coil's mounting bracket to the truck.
- Install the New Coil: Bolt the new coil in place, reconnect the wires and battery, and start the engine.
Pro Tip: While you're replacing the coil, it's a good time to inspect your distributor cap, rotor, and spark plug wires. These parts wear out over time and a new coil will perform best with a healthy ignition system all around.
Cost of Replacing an Isuzu Pickup Ignition Coil
| Part Type | Price Range |
|---|---|
| New Aftermarket Ignition Coil | $15.35 - $85.51 |
| Shop Labor Estimate | $50 - $75 |
| Total Estimated Cost (DIY) | $15.35 - $85.51 |
| Total Estimated Cost (Shop) | $65 - $160 |
Frequently Asked Questions
Can I replace the ignition coil myself?
Yes, absolutely. The ignition coil on the 1981-1990 Isuzu Pickup is externally mounted and very easy to access. It's a simple job that typically requires only a wrench or socket set and can be completed in under 30 minutes.
Are there any recalls for the ignition coil on my truck?
No. Searches of the National Highway Traffic Safety Administration (NHTSA) database show no open recalls or technical service bulletins (TSBs) related to the ignition coil for the 1981-1990 Isuzu Pickup.
Should I buy the cheapest coil available?
While budget-friendly coils can work, the ignition coil is a critical component that will leave you stranded if it fails. Investing in a reputable brand like NGK, Delphi, or Standard Ignition is highly recommended for peace of mind and long-term reliability.
My truck has no spark. Is it definitely the coil?
Not necessarily. While the coil is a common suspect, a no-spark condition can also be caused by a failed ignition control module (igniter), a bad pickup coil inside the distributor, or even a faulty distributor cap or rotor. Proper diagnosis is key to avoiding the replacement of good parts.
🎬 See this walkthrough on diagnosing a no-start, no-spark conditionHelpful Videos
Technical Specifications
OEM Part Numbers: 8943389230 8941367660
The 1981-1990 Isuzu Pickup uses a single, external, canister-style or E-core ignition coil. It is part of a distributor-based ignition system. Ensure the replacement coil is compatible with your specific year and engine, as some configurations may require a coil with an internal or external ballast resistor. Common aftermarket part numbers include UF64 and UF225.
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.
- Isuzu Pickup: