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 MANUALSCHEVROLET1989STEP VAN P30, 7.4 W, AUTOMATIC, 475/M40REPAIR AND DIAGNOSIS (SINGLE PAGE)ENGINE PERFORMANCEADJUSTMENTTUNE-UP - V8ADJUSTMENTSIGNITION SYSTEMIGNITION COIL - CARBURETED ENGINE
1989 Chevrolet Step Van P30, 7.4 W, Automatic, 475/M40
Ignition Coil - Carbureted Engine
1989 Chevrolet Step Van P30, 7.4 W, Automatic, 475/M40SECTION Ignition Coil - Carbureted Engine
- Disconnect all electrical leads from coil. Connect ohmmeter in position "A". See Fig 1. Reading should be zero or very low. If not, replace coil.
- Connect ohmmeter in positions "B" and "C". Using high scale, reading should show continuity. If reading is infinite, replace coil. Reconnect coil.
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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.