LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Ford >> 1990 >> Festiva L >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - System/Component Tests >> Emission Systems & Sub-Systems >> Fuel Evaporation >> System Inspection
April 5, 2026: LEMON Manuals is launched! Read the announcement.

System Inspection

  1. Start and warm engine to normal operating temperature. With engine idling, connect voltmeter to No. 1 3-way solenoid valve (Black/Yellow terminal). Voltage reading should be about 12 volts. If not, check solenoid and wiring to ECA.
  2. Disconnect top hose from No. 1 purge control valve on charcoal canister. Place finger over open end of hose. Increase engine speed to 2000 RPM. Ensure vacuum is not created at hose. If vacuum is present, check No. 1 3-way solenoid valve and wiring to control unit. Remove finger from hose. Leave hose disconnected. Return engine to idle.
  3. Disconnect neutral/safety switch connector on manual transaxle, or inhibitor switch connector on automatic transaxle. Voltage reading should be 1.5 volts.
  4. Place finger over purge control valve hose. Increase engine speed to 2000 RPM. Vacuum should be created at hose end. If not, check No. 1 3-way solenoid valve and wiring to ECA.
scientia non olet · About LEMON Manuals