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.
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HOMESERVICE MANUALSDODGE AND RAM1990DAKOTA LE, 2D PICKUP, 3.9 X, 4WD, AUTOMATICREPAIR AND DIAGNOSIS (SINGLE PAGE)ENGINE PERFORMANCESYSTEMENGINE CONTROLS - SYSTEM/COMPONENT TESTSDIRECT IGNITION SYSTEM (DIS) TESTS (3.3L ENGINE ONLY)CHECK COIL TEST (3.3L)
1990 Dodge and Ram Dakota LE, 2D Pickup, 3.9 X, 4WD, Automatic
Check Coil Test (3.3L)
1990 Dodge and Ram Dakota LE, 2D Pickup, 3.9 X, 4WD, AutomaticSECTION Check Coil Test (3.3L)
- Remove and measure resistance of ignition cables. Replace cables not within specification.
- Measure primary (side) coil resistance between B+ pin and each pin corresponding to the cylinders in question. See Fig 1 . Each reading should be .5-.7 ohms.
- Replace coil if resistance is NOT within specification. Remove ignition cables from coil towers and measure secondary resistance. Resistance should be 7000-14,000 ohms. Replace coil if resistance is not within specification.
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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.