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 MANUALSCHEVROLET1998EXPRESS 1 TON VAN V8-5.7L VIN RREPAIR AND DIAGNOSISPOWERTRAIN MANAGEMENTIGNITION SYSTEMIGNITION COILTESTING AND INSPECTION
1998 Chevrolet Express 1 Ton Van V8-5.7L VIN R
Ignition Coil: Testing and Inspection
1998 Chevrolet Express 1 Ton Van V8-5.7L VIN RSECTION Testing and Inspection
IGNITION COIL TEST
^ Make sure the ignition switch is "OFF."
1. Disconnect the distributor lead and wiring from the ignition coil.
CAUTION: Do not Insert the J 39200 probe into the ignition coil connectors. The female terminals could be spread and deformed, resulting In intermittent operation of the coil. Be sure to make contact with only the front edge of the terminals.
2. Connect an ohmmeter as shown in Figure, step 1. Use the high scale. The reading should be infinite. If not, replace the coil.
3. Connect the ohmmeter as shown in Figure, step 2. Use the low scale. The reading should be 0.2 - 0.5 ohms. If not, replace the coil.
4. Connect the ohmmeter as shown in Figure, step 3. Use the high scale. The meter should read 5k - 25k ohms. If not, replace the coil.
5. Reconnect the distributor lead and wiring to the coil.
RENDER: 1.0x
NO RELATED
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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.