- Place the ignition switch in the OFF position.
- Disconnect the ignition coil terminals.
- Using a suitable ohmmeter, measure the pick-up coil resistance between the pick-up coil terminals.
- The standard resistance should be 140-180 ohms. If the resistance is not within specification, check the wiring and connectors. Replace the pick-up coil if defective.
See Figures 1 and 2
- Disconnect the pick-up coil wiring.
- Switch the ohmmeter to the middle ohms scale.
- Measure the coil resistance between either of the pick-up coil leads and the housing. Infinite resistance should be read.
- Connect the ohmmeter probes across the coil leads and measure the resistance. It should read 500-1000 ohms. Flex the lead wires at the coil and connector by hand to check for intermittent opens in the wiring.
- If the resistance readings are not within specifications, replace the coil.
REMOVAL & INSTALLATION
See Figures 3 and 4
- Disconnect the negative battery cable.
- Remove the distributor cap, with the spark plug wires attached, and place aside. Remove the rotor cap.
- Unfasten the harness attached to the distributor and pick-up coil.
- Remove the pick-up coil retainer. Unfasten the pick-up coil wire harness plastic connector at the side of the distributor. Slide the pick-up coil off the distributor shaft.
- Lubricate the distributor shaft lightly with oil. Slide the pick-up coil down the shaft and position in place. Install the pick-up coil retainer clip to secure the coil in place.
- Attach the wire harness to the side of the distributor body, making sure none of the wires could get caught in the distributor while it rotates.
- Attach the wire harness to the distributor and pick-up coil.
- Install the rotor and distributor cap.
- Connect the negative battery cable.
- Check for proper vehicle operation.