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 MANUALSOLDSMOBILE1982FIRENZA L4-112 1.8L VIN G 2-BBLREPAIR AND DIAGNOSISA L L DIAGNOSTIC TROUBLE CODES ( DTC )
1982 Oldsmobile Firenza L4-112 1.8L VIN G 2-bbl
A L L Diagnostic Trouble Codes ( DTC )
1982 Oldsmobile Firenza L4-112 1.8L VIN G 2-bblSECTION A L L Diagnostic Trouble Codes ( DTC )
Testing and Inspection- Manufacturer Code Charts
- Related Tests, Information and Procedures
- A Charts
- Chart A-1 Driver Complaint Chart
- Chart A-1 Dwell Fixed Under 10 Degrees
- Chart A-2 Dwell Fixed Between 10 and 50 Degrees
- Chart A-2 No Check Engine Light
- Chart A-3 Dwell Fixed Over 50 Degrees
- Chart A-3 Will Not Flash Code 12
- Chart A-4 Engine Cranks But Will Not Run
- Chart A-5 Check Engine Light Inoperative
- Chart A-5 Fuel System Diagnosis
- Chart A-6 Check Engine Light on at All Times or No Code 12
- Chart A-6 Ignition System Check (With Remote Coil)
- C Charts
- Chart C-2A Idle Speed Control (ISC) Check
- Chart C-3 Canister Purge Valve Check
- Chart C-4B Ignition System Check (Remote Coil)
- Chart C-4C EST Performance Check
- Chart C-5 Electronic Spark Control (ESC) Check (Exc. Turbo)
- Chart C-8A Cooling Fan Circuit (With A/C)
- Chart C-8E Transmission Converter Clutch (TCC)
- Chart C-9A Park/Neutral Switch
- Chart C-9B Crank Signal Circuit
- Chart C-11 Idle Air Control (IAC)
- System Diagnostic Charts
- A Charts
RENDER: 1.0x
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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.