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 MANUALSPONTIAC1987GRAND PRIX BROUGHAM, 5.0 HREPAIR AND DIAGNOSIS (SINGLE PAGE)ENGINE PERFORMANCEADJUSTMENTTUNE-UP - V8TESTINGIGNITION SYSTEMIGNITION COIL RESISTANCE (OHMS)
1987 Pontiac Grand Prix Brougham, 5.0 H
Ignition Coil Resistance (Ohms)
1987 Pontiac Grand Prix Brougham, 5.0 HSECTION Ignition Coil Resistance (Ohms)
- Connect ohmmeter between ignition coil primary and coil frame. Reading should be infinite on high scale of meter. Disconnect ohmmeter from coil frame and connect it to the other coil primary terminal. Reading should be very low or zero on low scale of meter.
- Disconnect ohmmeter lead from one of the coil primary terminals and connect it to coil secondary terminal. Reading should not be infinite on high scale of meter.
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.