Ignition Coil
Coil is designed to operate with an external ballast resistor on V8 and 6 cylinder models. Models with 4 cylinder engines have a coil designed to operate without an external resistor. When testing coil for output, include resistor tests (if coil uses a resistor). Also inspect coil for external cracks and arcing. Test coil according to coil tester instructions. Replace coil and ballast resistor, if used, that do not meet specifications.
| Primary Resistance @70-80°F | ||
|---|---|---|
| Prestolite | 1.60-1.70 Ohms | |
| Essex | ||
| V8 and 6-Cyl. | 1.34-1.55 Ohms | |
| 4-Cyl. | 1.41-1.62 Ohms | |
| Secondary Resistance @70-80°F | ||
|---|---|---|
| Prestolite | 9400-11, 700 Ohms | |
| Essex | ||
| V8 and 6-Cyl. | 9000-12, 200 Ohms | |
| 4-Cyl. | 8000-11, 200 Ohms | |
| Ballast Resistance @ 70-80°F | ||
|---|---|---|
| V8 and 6-Cyl. | 1.1-1.3 Ohms | |
| 4-Cyl. | Not Used | |