Ford Fiesta Quiz
Exhaust System

Catalytic Converter - Removal and Installation

In this manual: Exhaust System
Service Information — 27Suspension — 48Transmission — 9Brake System — 52Steering — 21Engine — 140Manual Transmission, Clutch, Transfer Case and Power Transfer Unit — 48Exhaust System — 6Fuel System — 21Climate Control System — 58Instrumentation and Warning Systems — 26Battery and Charging System — 20Infotainment Systems — 41Lighting — 29Power Distribution — 11Electronic Function Group — 30Body and Paint — 275Frame and Mounting — 3
20steps
~120min
4/5difficulty
010203040502518N·mlb·ft
Tightening torque found on this page
Done 0 of 20

Special Service Tools / General Equipment

Cable Ties

Removal

  1. Position the vehicle in NEUTRAL on the lift.
    Refer to: Jacking and Lifting - Overview (100-02 Jacking and Lifting, Description and Operation).
  2. Remove the battery tray.
    Refer to: Battery Tray – 1.6 L EcoBoost (132 kW/180 L hp) – Sigma (414-01 Battery, Mounting and Cables, Removal and Installation).
  3. Remove the engine appearance cover.
  4. Disconnect the harness clip, then disconnect the electrical connectors of the HO2S sensor and the catalyst monitor sensor.

  5. NOTICE: Shift cables must not be twisted or bent.

    • Disconnect the shifter cable. Disconnect the shifter cables from the shifter cable brackets.
    • Disconnect the electrical connector.
  6. Remove the bolts and the bracket.
    Torque: 18 lb-ft (25 N·m)
  7. Remove the HO2S sensor.
    Refer to: Heated Oxygen Sensor (HO2S) (303-14B Electronic Engine Controls - 1.6 L EcoBoost (132kW/180 LPS) - Sigma, Removal and Installation).
  8. Remove the CMS (catalyst monitor sensor).
    Refer to: Catalyst Monitor Sensor (303-14B Electronic Engine Controls - 1.6 L EcoBoost (132kW/180 LPS) - Sigma, Removal and Installation).
  9. Remove the bolts and the heat shield.
    Torque: 89 lb-in (10 N·m)
  10. Remove and discard the catalytic converter bolt.

  11. NOTICE: Do not bend or twist the exhaust flex pipe. Failure to follow these instructions may result in damage to the flex pipe.

    Support the flexible exhaust pipe with support wire or a suitable strap.
    Use general equipment: cable ties
  12. Remove the nuts and the catalytic converter mounting bracket.
    Torque: 18 lb-ft (25 N·m)
  13. Disconnect the exhaust isolator and set the exhaust system aside.
    • Remove and discard the nuts.
      Torque: 35 lb-ft (48 N·m)
    • Remove and discard the gasket.
    • Set the exhaust system aside.
  15. Remove and discard the catalytic converter bolts.
    1. Position the catalytic converter upward.
    1. Remove the catalytic converter.
  17. Remove and discard the catalytic converter gasket.

Installation

  1. To install, reverse the removal procedure.
  2. Install a new gasket and loosely install the 2 bolts.

  3. NOTICE: Failure to tighten the catalytic converter manifold fasteners in this sequence will cause the converter to develop an exhaust leak.

    1. Position the catalytic converter on the 2 bolts and install the upper bolt.
      Torque: 18 lb-ft (25 N·m)
    1. Tighten the right catalytic converter bolt.
      Torque: 18 lb-ft (25 N·m)
    1. Tighten the left catalytic converter mounting bolt.
      Torque: 18 lb-ft (25 N·m)

Test yourself

A quick Ford Fiesta quiz: every answer comes with an explanation and a link to the manual page.