LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Eagle >> 1998 >> Talon Base, Automatic >> Repair and Diagnosis >> Engine Performance >> System >> Engine Self-Diagnostics - With Codes >> DTC Test >> Test TC-118A: 1/1 Fuel System Rich
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Test TC-118A: 1/1 Fuel System Rich

NOTE: For connector terminal identification, see CONNECTOR IDENTIFICATION . For wiring diagram, see WIRING DIAGRAMS article.
  1. For fuel system identification, see 1/1 FUEL SYSTEM IDENTIFICATION  table. Repair any O2S related Diagnostic Trouble Codes (DTCs) before proceeding with this test. If no O2S related DTCs are set, check for any Technical Service Bulletins (TSBs) which may apply. If any TSBs are found to apply, perform TSB action as necessary. If no TSBs apply, go to next step.
    1/1 FUEL SYSTEM IDENTIFICATION

    Application Location
    Avenger, Sebring Coupe & Talon
    4-Cylinder Upstream O2S
    V6 Rear Bank Upstream O2S
    Breeze, Cirrus, Neon, Sebring Conv. & Stratus
    4-Cylinder Upstream O2S
    V6 Upstream O2S
  2. 1/1 FUEL SYSTEM RICH DTC sets when the Powertrain Control Module (PCM) performs a test to determine if fuel system is running too rich. If fuel system is running too rich for 2 trips, Malfunction Indicator Light (MIL) illuminates and a trouble code is stored. MIL remains on for more than one trip but goes out if conditions which occurred to set code are not found on subsequent trips. Possible causes are: plugged catalyst, failed PCM, engine parts tolerance, injectors stuck open, malfunctioning MAP sensor, malfunctioning upstream O2S, faulty fuel pressure regulator, faulty wiring or connectors. Go to next step.
  3. Perform O2S heater test to verify O2S heater is okay. See TEST TC-103A . If TEST TC-103A passed, go to next step. If TEST TC-103A did not pass, repair as necessary under TEST TC-103A. Test is complete. Perform TEST VER-5A .
  4. Turn engine off. Inspect cam and/or valve timing. If cam and/or valve timing are okay, go to next step. If cam and/or valve timing are not okay, repair as necessary. Perform TEST VER-5A .
  5. Turn engine off. Turn ignition on. Using scan tool, read long term adaptive memory value. If long term adaptive memory is between negative 18 percent and negative 25 percent, go to TEST TC-118B . If long term adaptive memory is not between negative 18 percent and negative 25 percent, condition to set trouble code is no longer present. Test is complete. Perform TEST VER-5A .
scientia non olet · About LEMON Manuals