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.
1981 Chevrolet Chevette Base, 4D Hatchback, 1.8L Eng VIN D, Automatic TransFACTORY OEM SERVICE PROCEDURE
Emission Control Application: CHEVROLET
EMISSION CONTROL SYSTEMS
| Engine & Calibration | Emission Control Systems & Devices | Remarks |
|---|---|---|
| 1.6L (98") 4-Cyl. | CAT, CCC, EEC, EGR, OXS, PAIR, PCV, TAC, CP-SOL, DCLV, DLV, TP-CV | |
| 1.8L (111") 4-Cyl. Diesel | PCV, VSY | |
| 1.8L (113") 4-Cyl. Gasoline | AIR, CAT, CCC, EEC, EGR, OXS, PCV, TAC, CP-SOL, DCLV, EGR-TVS, TP-CV | |
| 2.5L (151") 4-Cyl. | AIR, CAT, CCC, EEC, EGR, OXS, PCV, TAC, APDV, ASV, EGR-TVV | |
| 2.8L (173") V6 | AIR, CAT, CCC, EEC, EGR, PCV, TAC, APCV, CKV(1), CP-SOL, DCLV, EGR-TVS, TP-CV | (1) - Auto. Trans. |
| 3.8L (229") V6 | AIR, CAT, CCC, EEC, EGR, OXS, PCV, TAC, APCV, CP-TVS, DLV, DTVS, EGR-SOL | |
| 3.8L (231") V6 | AIR, CAT, CCC, EEC, EGR, OXS, PCV, TAC, APCV, CKV, EFE, EFE-SOL, EGR-SOL | |
| 3.8L (231") V6 Turbo | AIR, CAT, CCC, EEC, EGR, OXS, PCV, TAC, APDV, ASV, CP-TVS, CKV, DLV, EGR-SOL, MAP | |
| 4.4L (267") V8 | AIR, CAT, CCC, EEC, EGR, OXS, PCV, TAC, APCV, CP-TVS, EFE-TVS, EGR-SOL | |
| 5.0L (305") V8 | AIR, CAT, CCC, EEC, EGR, OXS, PCV, TAC, APCV, CP-TVS, EFE-TVS, EGR-SOL | |
| 5.7L (350") V8 | AIR, CAT, CCC, EEC, EGR, OXS, PCV, TAC, APCV, CP-TVS, EFE-TVS, EGR-SOL | |
| 5.7L (350") V8 Diesel | EGR, EGR-VS, EGR-SOL, EPR-SOL, PCV, TVV, VRV | |
| AIR
- Air Injection Reactor APCV - Air Pump Control Valve APDV - Air Pump Diverter Valve ASV - Air Switching Valve BPT - Back Pressure Transducer CCC - Computer Comand Control CKV - Check Valve CAT - Catalytic Converter CP - Canister Purge CP-SOL - Canister Purge Solenoid CV - Control Valve DCLV - Deceleration Valve DLV - Delay Valve DTVS - Distributor Thermal Vacuum Switch EEC - Evaporative Emission Control EFE - Early Fuel Evaporation EGR - Exhaust Gas Recirculation EPR - Exhaust Pressure Regulator MAP - Manifold Pressure Sensor PAIR - Pulse Air Injection PCV - Positive Crankcase Ventilation SOL - Solenoid SWV - Switching Valve TAC - Thermostatic Air Cleaner TP-CV - Tank Pressure Control Valve TRV - Transmission Vacuum Valve TVS - Thermal Vacuum Switch TVV - Thermal Vacuum Valve VCS - Vacuum Control Switch VL-DV - Vacuum Delay Valve VRV - Vacuum Regulator Valve VS - Vacuum Switch VSV - Vacuum Switching Valve |
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Factory Service Tools
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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.
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