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 MANUALSCHEVROLET1989CAPRICE BASE, 4.3 Z, 700R4/MD8REPAIR AND DIAGNOSIS (SINGLE PAGE)ENGINE PERFORMANCEIGNITION SYSTEM - HEI-ESTTESTINGIGNITION SYSTEM CHECKNOTES
1989 Chevrolet Caprice Base, 4.3 Z, 700R4/MD8
Ignition System Check: Notes
1989 Chevrolet Caprice Base, 4.3 Z, 700R4/MD8SECTION Notes
NOTE:
For ignition system testing procedures, see appropriate CHART C-4 in THE appropriate TESTS W/CODES article in the ENGINE PERFORMANCE section. See following list. If "engine cranks, but will not run", proceed to appropriate CHART A-3 for fuel injected vehicles. Proceed to appropriate "symptom" in appropriate THEORY & OPERATION article in the ENGINE PERFORMANCE section for carbureted vehicles.
- For 2.0L VIN [K], see: 2.0L(K)/2.5L TESTS W/CODES
- For 2.0L VIN [1], see: 2.0L VIN [1] TESTS W/CODES
- For 2.0L Turbo, see: 2.0L TURBO TESTS W/CODES
- For 2.5L, see: 2.0L(K)/2.5L TESTS W/CODES
- For Camaro & Firebird 2.8L: 2.8L VIN [S] PFI TESTS W/CODES
- For 3.1L, see: 3.1L VIN [T] PFI TESTS W/CODES
- For 3.3L, see: 3.3L/3.8L PFI TESTS W/CODES
- For 3.8L, see: 3.3L/3.8L PFI TESTS W/CODES
- For 4.3L, see: 4.3L TBI TESTS W/CODES
- For 5.0L PFI, see: 5.0L/5.7L PFI TESTS W/CODES
- For 5.7L PFI, see: 5.0L/5.7L PFI TESTS W/CODES
- For Cadillac Brougham, see: CCC V8 CARBURETOR TESTS W/CODES
- For All other Cadillac with DFI, see: DFI TESTS W/CODES
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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.