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.
2001 Chevrolet MetroFACTORY OEM SERVICE PROCEDURE
Engine Controls - System & Component Testing
- Introduction
- Computerized Engine Controls
- Engine Sensors & Switches
- Notes
- Camshaft Position Sensor
- Crankshaft Position Sensor
- Electrical Load Diode Module (Metro)
- Electrical Load Idle-Up Signal (PRIZM)
- Engine Coolant Temperature Sensor
- Fuel Level Sensor (Metro)
- Fuel Tank Pressure Sensor
- Intake Air Temperature Sensor
- Heated Oxygen Sensor No. 1
- Heated Oxygen Sensor No. 2
- Knock Sensor (PRIZM)
- Manifold Absolute Pressure Sensor (Metro)
- Mass Air Flow Sensor (PRIZM)
- Park/Neutral Position Switch
- Throttle Position Sensor
- Vehicle Speed Sensor
- Modules, Motors, Relays & Solenoids
- Fuel System
- Idle Control System
- Ignition System
- Emission Systems & Subsystems
- Notes
- Fuel Evaporation
- Notes
- EVAP Canister Purge Valve Diagnosis (Metro)
- EVAP Canister Purge Valve Diagnosis (Prizm)
- EVAP Canister Purge Solenoid Valve Diagnosis (Prizm)
- EVAP Canister Vent Solenoid Diagnosis (Metro)
- EVAP Fuel Tank Pressure Control Solenoid Valve Diagnosis (Metro)
- EVAP Fuel Tank Pressure Vent Solenoid Valve Diagnosis (Prizm)
- Fuel Tank Pressure Sensor Diagnosis (Metro)
- Fuel Tank Pressure Sensor Diagnosis (Prizm)
- Fuel Tank Pressure Control Valve Diagnosis (Metro)
- EVAP Canister Purge Check (Metro)
- Positive Crankcase Ventilation
- Miscellaneous Controls
- Circuit Tests
- Notes
- A/C Idle-Up Circuit (Metro)
- Electrical Load Idle-Up Circuit (Metro)
- Electrical Load Idle-Up Circuit (PRIZM)
- Fuel Injector Circuit (Metro)
- Fuel Injector Circuit (PRIZM)
- Fuel Injector Coil Test - Engine Coolant Temperature Is 50-95°F (PRIZM)
- Fuel Injector Coil Test - Engine Coolant Temperature Is Not 50-95°F (PRIZM)
- Fuel Injector Balance Test (PRIZM)
Factory Service Tools
Use the Manual With the Right Hardware
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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.