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 MANUALSPONTIAC19846000 STEREPAIR AND DIAGNOSISENGINE PERFORMANCESYSTEM1.8L/2.5L/5.7L TBI TESTS
1984 Pontiac 6000 STE
1.8L/2.5L/5.7L TBI Tests
1984 Pontiac 6000 STESECTION 1.8L/2.5L/5.7L TBI Tests
- Diagnostic Procedure - Testing
- Entering/Exiting Diagnostic Mode
- Clearing Trouble Codes
- Reading Trouble Codes
- ECM Trouble Code Id
- Trouble Code Determination (Hard Or Intermittent)
- Diagnostic Chart Information
- Diagnostic Circuit Check
- Diagnostic Symptom Check
- Field Service Mode Check
- Chart A1 - No "Service Engine Soon" Light
- Chart A2 - No Code 12, "SES" Light On Steady
- Chart A3 - Cranks But Won't Run (Exc. Corvette)
- Chart A3 - Cranks But Won't Run (Corvette)
- Chart A5 - Fuel System Diagnosis (Exc. Corvette)
- Chart A5 - Fuel System Diagnosis (Corvette)
- Chart A6 - Fuel System Diagnosis (All)
- Chart A7 - Fuel Injection
- Code 13 - Oxygen (O2) Sensor (All Engines)
- Code 14 - Coolant Sensor (Cts) Voltage Low
- Code 15 - Coolant Sensor Circuit Open
- Code 21 - TPS Signal Voltage High
- Code 22 - TPS Signal Volt Low
- Code 24 - Vehicle Speed Sensor (VSS)
- Code 33 - Map Sensor Signal Volt Hi
- Code 34 - Map Sensor Signal Volt Lo
- Code 42 - Electronic Spark Timing (Est)
- Code 43 - Electronic Spark Control (ESC) (Corvette)
- Code 44 - Lean Exhaust Indication
- Code 45 - Rich Exhaust Indication
- Code 51 - Faulty Prom
- Code 55 - Electronic Control Module
- Chart C1 - ECM Replacement Check Chart
- Chart C1A - Park Neutral Switch
- Chart C1B - Crank Signal
- Chart C1D - Map Output Check
- Chart C1E - P/S Pressure Switch Signal Check
- Chart C2B - Crank Signal
- Chart C2C - Idle Air Control
- Chart C2D - Map Output Check
- Chart C5 - Electronic Spark Control (Corvette)
- Chart C6 - Air Management Check (Corvette)
- Chart C6A - Air Management Check (Corvette)
- Chart C7 - EGR Valve Check (Non-ECM Controlled)
- Chart C7A - EGR Valve Check (Non-ECM Controlled)
- Chart C8 - TCC (Exc. Corvette)
- Chart C8B - Shift Light (Exc. Corvette)
- Chart C8 - TCC (Corvette)
- Chart C8A & 8B - M/T W/Auto Overdrive (Corvette)
- Chart C10 & 10A - A/C Clutch Control
- Chart C12 - Coolant Fan Control (With A/C)
- ECM Terminal Id & Voltage
- Wiring Diagrams
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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.