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 MANUALSMERCURY2000MYSTIQUE GS, 2.0 3, AUTOMATICREPAIR AND DIAGNOSIS (SINGLE PAGE)ENGINE PERFORMANCESYSTEMENGINE CONTROLS - SELF-DIAGNOSTICS - EEC-V (BI-FUEL)ADDITIONAL SYSTEM FUNCTIONSDRIVE CYCLESEVAP RUNNING LOSS SYSTEM REPAIR VERIFICATION DRIVE CYCLE
2000 Mercury Mystique GS, 2.0 3, Automatic
EVAP Running Loss System Repair Verification Drive Cycle
2000 Mercury Mystique GS, 2.0 3, AutomaticSECTION EVAP Running Loss System Repair Verification Drive Cycle
- Perform VEHICLE PREPARATION . Using scan tool, ensure FTP PID value is 2.4-2.8 volts with gas cap removed. Reinstall gas cap. Using scan tool, select ON-BOARD SYSTEM READINESS MENU and observe OBD-II monitors. Drive vehicle at a constant speed more than 35 MPH, but less than 65 MPH with throttle as steady as possible.
- Using scan tool, observe HO2S monitor until it completes. Bring vehicle to a stop. Using scan tool, select IAT, FLI, FTP V, EVAPPDC and EVAPCV PIDs. Ensure IAT PID value is 50-100°F (10-38°C).
- Drive vehicle at a constant speed more than 40 MPH with steady throttle. During this time, ensure FLI PID value is stable between 15-85 percent tank fill. Ensure FTP V PID value is stable within one volt.
- To initiate EVAP monitor, EVAPPDC PID value must increase to a minimum of 75 percent (canister purge open). At this time, EVAPCV PID will display 100 percent (canister vent solenoid closed to seal system) and monitor will begin to run. Continue to drive vehicle at steady throttle with light steering until EVAPCV PID value displays zero percent (canister vent solenoid open, system unsealed).
- Bring vehicle to a stop. Using scan tool, select ON-BOARD SYSTEM READINESS MENU and check if EVAP monitor has completed. If EVAP monitor is not complete, repeat step 3.
NOTE:
During drive cycle or hot ambient temperatures, fuel vapor (from canister and/or fuel tank) may keep EVAP monitor test from initiating.
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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.