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Home >> Eagle >> 1998 >> Talon Base, Automatic >> Repair and Diagnosis >> Engine Performance >> System >> Engine Self-Diagnostics - With Codes >> DTC Test >> Test TC-113D: EVAP Purge Flow Monitor Failure
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Test TC-113D: EVAP Purge Flow Monitor Failure

NOTE: This procedure applies only to Neon.
  1. For EVAP and Leak Detection Pump (LDP) location, see EVAP & LEAK DETECTION PUMP (LDP) LOCATION  table. Replacing Powertrain Control Module (PCM) will not repair this problem. Using scan tool, erase DTCs. Carefully inspect vacuum hoses from engine, to EVAP solenoid, to gas tank for proper routing and pinched or plugged hoses. If vacuum hoses are okay, go to next step. If vacuum hoses are not okay, repair or replace as necessary. Perform TEST VER-2A .
    EVAP & LEAK DETECTION PUMP (LDP) LOCATION

    Model/Component Location
    Neon
    EVAP & LDP Behind Passenger Headlight
  2. Start engine. Allow engine to reach normal operating temperature. Turn engine off. Turn ignition on. Disconnect purge vacuum hose at EVAP purge solenoid that goes to canister. Start engine. There should be no flow though EVAP purge solenoid for 1-2 minutes. If EVAP purge solenoid does not allow vacuum through within one minute, go to next step. If EVAP purge solenoid allows vacuum through within one minute, go to TEST TC-113F .
  3. After 90 seconds, EVAP purge solenoid will allow vacuum to cycle intermittently at a steady rate. If EVAP purge solenoid is allowing vacuum to cycle through intermittently at a steady rate, go to next step. If EVAP purge solenoid is not allowing vacuum to cycle through intermittently at a steady rate, go to step 6)  .
  4. During this step, DO NOT use more than 5 psi (34 kPa). Turn ignition off. Attempt to blow air through vacuum line that goes to canister. If canister and vacuum line allow air to pass, EVAP purge solenoid and hoses are okay, go to next step. If canister and vacuum line do not allow air to pass, go to TEST TC-113E .
  5. No trouble was found during this test. The following components can be inspected as possible causes for trouble code: damaged rubber hoses from EVAP purge solenoid to throttle body, plastic connector to EVAP purge solenoid cracked, EVAP purge solenoid malfunction, hose plugged from EVAP purge solenoid to canister, hose plugged from throttle body to solenoid, faulty connections or vacuum hose from fuel tank to canister. Test is complete.
  6. Disconnect vacuum hose from EVAP purge solenoid to throttle body at EVAP purge solenoid. Connect a vacuum gauge to disconnected vacuum hose that goes to throttle body. If vacuum gauge indicates manifold vacuum, go to next step. If vacuum gauge does not indicate manifold vacuum, repair vacuum hose or throttle body. Perform TEST VER-2A .
  7. Reconnect vacuum hose from throttle body to EVAP purge solenoid. Connect a vacuum gauge to canister side of EVAP purge solenoid. If vacuum gauge indicates 3-7 in. Hg, go to next step. If vacuum gauge does not indicate 3-7 in. Hg, replace EVAP purge solenoid. Perform TEST VER-2A .
  8. Connect a vacuum pump to hose going to EVAP canister. Apply more than 2 in. Hg vacuum to canister. If canister holds more than 2 in. Hg vacuum, go to next step. If canister does not hold more than 2 in. Hg vacuum, replace EVAP purge solenoid. Perform TEST VER-2A .
  9. Check for plugged hose or plugged vent port on canister. If hose is plugged, repair as necessary. Perform TEST VER-2A . If hose is not plugged, go to next step.
  10. If vent port is plugged, clean plugged vent port and retest. Perform TEST VER-2A . If vent port is not plugged, replace EVAP canister. Perform TEST VER-2A .
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