See Figures 1, 2, 3 and 4
- Connect an ohmmeter across the coil primary terminals and check resistance on the low scale. Resistance (@ 68°F; 20°C) should be:
1987-89 B2200 carbureted: 1.0-1.3 ohms1990-93 B2200 injected: 0.81-0.99 ohms1987-88 B2600: 1.0-1.3 ohms1989 B2600i; Point 1: 0.77-0.95 ohms ; Point 2: 0.9-1.1k ohms1990-93 B2600i: 0.81-0.99 ohms
2.6L engine; Point 1: 0.77-0.95 ohms ; Point 2: 0.9-1.1k ohms1989-91 3.0L engine: 0.81-0.99 ohms1992-93 3.0L engine: 0.72-0.88 ohms
- If resistance is much higher, replace the coil.
- Check the coil secondary resistance.Connect an ohmmeter across the distributor side of the coil and the coil center tower. Read resistance on the high scale. Resistance at 68°F; 20°C) should be:
1987-88 B2200: 6-30k ohms1987-88 B2600: 10-20k ohms1989-93 B2200 and B2600i: 6-30k ohms