Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
Ignition Coil Resistance
Remove primary and secondary coil leads. Using ohmmeter, measure resistance between primary terminals of coil. Measure resistance between positive primary terminal and high voltage terminal. See IGNITION COIL RESISTANCE table. Insulation resistance between coil case and primary positive terminal should be infinite. Replace coil if resistance measurements are not within specification.
| Application | Primary (Ohms) | Secondary (Ohms) |
|---|---|---|
| Aspire | 0.5-0.7 | 20,000-31,000 |
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.