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 MANUALSCHEVROLET1987CAPRICE BROUGHAM LS, 5.0 H, 700R4/MD8REPAIR AND DIAGNOSISENGINE PERFORMANCESYSTEMEGR SYSTEM - GASOLINECOMPONENT TESTINGEGR CONTROL CIRCUIT
1987 Chevrolet Caprice Brougham LS, 5.0 H, 700R4/MD8
EGR Control Circuit
1987 Chevrolet Caprice Brougham LS, 5.0 H, 700R4/MD8SECTION EGR Control Circuit
For testing of EGR control circuit, see appropriate diagnostic chart in COMPUTER COMMAND CONTROL article in the COMPUTERIZED 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.