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 MANUALSCHEVROLET1983CITATION 2D HATCHBACK, 2.8 Z, AUTOMATICREPAIR AND DIAGNOSIS (SINGLE PAGE)ENGINE PERFORMANCESYSTEMEGR SYSTEM - GASOLINECOMPONENT TESTINGPULSE WIDTH MODULATED EGR VALVE
1983 Chevrolet Citation 2D Hatchback, 2.8 Z, Automatic
Pulse Width Modulated EGR Valve
1983 Chevrolet Citation 2D Hatchback, 2.8 Z, AutomaticSECTION Pulse Width Modulated EGR Valve
For testing of Pulse Width Modulated EGR system and valve, see appropriate diagnostic flow chart (if applicable) in appropriate article in the COMPUTER ENGINE CONTROL section.
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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.