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 MANUALSCHEVROLET1986CAMARO BASE, 2.8 S, STANDARDREPAIR AND DIAGNOSIS (SINGLE PAGE)ENGINE PERFORMANCETESTING & DIAGNOSISV6/V8 PFI TESTS W/CODES
1986 Chevrolet Camaro Base, 2.8 S, Standard
V6/V8 PFI Tests W/Codes
1986 Chevrolet Camaro Base, 2.8 S, StandardSECTION V6/V8 PFI Tests W/Codes
- Model Identification
- Description
- Diagnostic System Operation
- Basic Diagnostic Procedure
- Entering Or Exiting Diagnostic Mode (Non-Scan)
- Reading Trouble Codes
- ECM Trouble Code Definitions
- Trouble Code Determination (Hard Or Intermittent)
- Clearing Trouble Codes
- Diagnostic Materials
- Field Service Mode Check (Fuel Injected Models)
- Special Diagnostic Tools
- Scan Tester Usage
- Scan Tester - Test Data Parameters
- Diagnostic Circuit Check (All Engines)
- "Scan" Diagnostic Circuit Check
- Diagnostic Charts
- Chart A1 - No "SES" Light (2.8L & 5.0L)
- Chart A1 - No "Service Engine Soon" Light (5.7L)
- Chart A2 - No Code 12 "SES" Light On Steady (2.8L)
- Chart A2 - No Code 12 "SES" Light On Steady (5.0/5.7L)
- Charts A3A & A3B - Engine Cranks, But Won't Run (All Engines)
- A3B - Engine Cranks, But Won't Run (Cont.) (All Engines)
- Chart A7A - Fuel System Diagnosis (All Engines)
- Chart A7B - Fuel System Diagnosis (All Engines)
- Chart A9 - Cold Start Valve (All Engines)
- Code 13 - Open Oxygen (O2) Sensor Circuit (All Engines)
- Code 14 - Cts Signal Voltage Low (All Engines)
- Code 15 - Cts Signal Voltage High (All Engines)
- Code 21 - TPS Signal Voltage High (All Engines)
- Code 22 - TPS Signal Voltage Low (All Engines)
- Code 23 - Mat Sensor Signal Voltage High (All Engines)
- Code 24 - Vehicle Speed Sensor (VSS) (All Engines)
- Code 25 - Mat Sensor Signal Voltage Low (All Engines)
- Code 32 - EGR System Failure (2.8L)
- Code 32 - EGR System Failure (5.0/5.7L)
- Code 33 - MAF Signal Voltage High (2.8L)
- Code 33 - MAF Signal Voltage High (5.0/5.7L)
- Code 34 - MAF Sensor Signal Voltage Low (2.8L)
- Code 34 - Map Sensor Signal Volt Lo (2.8L, P-Body)
- Code 34 - MAF Sensor Signal Voltage Low (5.0/5.7L)
- Code 36 - MAF Sensor Burn-Off (5.0/5.7L)
- Code 41 - Cylinder Select Error (2.8L)
- Code 41 - Cylinder Select Error (5.0/5.7L)
- Code 42 - Electronic Spark Timing (All Engines)
- Code 43 - Electronic Spark Control (ESC) (5.0/5.7L)
- Code 44 - Lean Exhaust Indication (All Engines)
- Code 45 - Rich Exhaust Indication (All Engines)
- Code 46 - Vehicle Anti-Theft System (Vats) (Corvette)
- Code 51 - Faulty Mem-Cal
- Code 53 - System Over Voltage
- Code 54 - Fuel Pump Circuit Low Voltage (All Engines)
- Chart C1 - ECM Replacement Check Chart
- Chart C1A - Park Neutral Switch (All Engines)
- Chart C1E - PSPS Check (2.8L & 5.0L)
- CHART C2C - IDLE AIR CONTROL (All ENGINES)
- Chart C3 - Canister Purge Check (All Engines)
- Chart C4A - Ignition System Check (5.0/5.7L)
- Chart C4B - Ignition System Check (2.8L)
- Chart C5 - Electronic Spark Control (ESC) (5.0/ 5.7L)
- Chart C6A - Electric Divert (2.8L W/ Man. Trans.)
- Chart C6A - Air Management Check (5.7L)
- Chart C6B - Air Management Check (5.0L)
- Chart C7A - Exhaust Gas RECIRCULATION (2.8L)
- Chart C7B - Exhaust Gas RECIRCULATION (5.0/5.7L)
- Chart C8 - Trans. CONV. Clutch (2.8L, All Trans./Transaxles)
- Chart C8A - Trans. CONV. Clutch (Cont.)(2.8L,125-C Transaxle)
- Chart C8B - Transmission Converter Clutch (5.0L)
- Chart C8A - Transmission Converter Clutch (5.7L)
- Chart C8B - Manual Trans. W/ Overdrive (5.7L)
- Chart C10A - A/C Clutch Control (2.8L)
- Chart C10B - A/C Clutch Control
- Chart C12A - Coolant Fan Check (All Engines)
- Component Locations
- ECM Terminal Id
- 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.