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.
1990 Eagle Summit Base, AutomaticFACTORY OEM SERVICE PROCEDURE
Ignition Coil Resistance
- Using a Digital Volt/Ohmmeter (DVOM), measure primary coil resistance between ignition coil connector terminals No. 2 and No. 3 (coils for cylinders No. 1 and No. 4) and terminals No. 1 and No. 3 (coils for cylinders No. 2 and No. 3). See Fig 1 .
- Measure secondary coil resistance between coil towers for cylinders No. 1 and No. 4 and between coil towers for cylinders No. 2 and No. 3. See Fig 2 . Primary and secondary coil resistance should be within specification. See DIS IGNITION COIL RESISTANCE table.
DIS IGNITION COIL RESISTANCE - Ohms @ 68°F (20°C)
| Application | Primary | Secondary |
|---|---|---|
| All Models | .77-.95 | 10.3-13.9 |
Factory Service Tools
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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.
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