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 MANUALSOLDSMOBILE1989DELTA 88 V6-3800 3.8LREPAIR AND DIAGNOSISPOWERTRAIN MANAGEMENTCOMPUTERS AND CONTROL SYSTEMSTESTING AND INSPECTIONCOMPONENT TESTS AND GENERAL DIAGNOSTICSSYSTEM DIAGNOSIS - SECONDARY TESTING
1989 Oldsmobile Delta 88 V6-3800 3.8L
System Diagnosis - Secondary Testing
1989 Oldsmobile Delta 88 V6-3800 3.8LSECTION System Diagnosis - Secondary Testing
1. Connect engine analyzer to view parade display of ignition system secondary.
2. While slowly increasing engine speed from idle to 2,000 rpm, compare engine analyzer display to the parade displays below.
SPARK PLUG DIAGNOSIS
1. Remove spark plugs, and inspect them for carbon deposits and damage. Ensure spark plug gap is at correct specifications.
2. If plugs are satisfactory, reinstall and check for a mechanical or fuel system problem.
3. If plugs are not satisfactory, clean or replace as necessary.
2. While slowly increasing engine speed from idle to 2,000 rpm, compare engine analyzer display to the parade displays below.
Secondary Diagnosis:
Secondary Diagnosis:
SPARK PLUG DIAGNOSIS
Spark Plug Diagnosis:
1. Remove spark plugs, and inspect them for carbon deposits and damage. Ensure spark plug gap is at correct specifications.
2. If plugs are satisfactory, reinstall and check for a mechanical or fuel system problem.
3. If plugs are not satisfactory, clean or replace as necessary.
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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.