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 MANUALSCHEVROLET1987NOVA BASE, 4D SEDAN, AUTOMATICREPAIR AND DIAGNOSIS (SINGLE PAGE)ENGINE PERFORMANCESYSTEMFEEDBACK CARBURETOR CEC SYSTEMSERVICINGCOLD MIXTURE HEATER SYSTEMSYSTEM CHECK
1987 Chevrolet Nova Base, 4D Sedan, Automatic
System Check
1987 Chevrolet Nova Base, 4D Sedan, AutomaticSECTION System Check
- Start engine. Check CMH with coolant temperature below 109°F (43°C). Using a voltmeter, check that there is voltage between positive terminal (White/Red wire color) and ground.CAUTION: Voltmeter should be inserted from rear side of connector.
- Warm engine to above 131°F (55°C). Check that there is no voltage. If no problem is found with this check, system is okay; otherwise inspect each part.
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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.