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Home >> Pontiac >> 2007 >> Torrent FWD >> Repair and Diagnosis >> Engine Mechanical >> Engine Exhaust System >> Repair Instructions >> Catalytic Converter Replacement >> Installation Procedure

Installation Procedure

  1. Install the HO2S, if previously removed. Refer to Heated Oxygen Sensor 1 Replacement .
  2. Fig 1: View Of Exhaust Manifold Studs
    GM1370520Courtesy of GENERAL MOTORS CORP.
    NOTE: Refer to Fastener Notice .
  3. Install the exhaust manifold studs (1) if previously removed.

    Tighten:  Tighten the studs to 6 N.m (53 lb in).

  4. Fig 2: View Of Hanger From The Rubber Isolators
    GM926825Courtesy of GENERAL MOTORS CORP.
  5. Install the rubber isolator and to the catalytic converter hanger.
  6. Fig 3: View Of Catalytic Converter & Nuts
    GM1370519Courtesy of GENERAL MOTORS CORP.
    NOTE: To prevent internal damage to the flexible coupling of the catalytic converter assembly, the converter must be supported. The vertical movement at the rear of the catalytic converter assembly must not exceed 6 degrees up or down.
  7. Install a new gasket (2) and attach the catalytic converter (4) to the exhaust manifold.
  8. Install the catalytic converter to the exhaust manifold nuts (3).

    Tighten:  Tighten the nuts to 37 N.m (27 lb ft).

  9. Fig 4: View Of Gasket & Exhaust Pipe
    GM926819Courtesy of GENERAL MOTORS CORP.
  10. Install a new exhaust pipe flange gasket to the catalytic converter flange.
  11. Install the exhaust pipe to the catalytic converter pipe. with the catalytic converter nuts.
  12. Install the exhaust pipe to the catalytic converter pipe.

    Tighten:  Tighten the nuts to 37 N.m (27 lb ft).

  13. Fig 5: View Of HO2S 2 & Harness Connector
    GM1370518Courtesy of GENERAL MOTORS CORP.
  14. Connect the HO2S connector (2) to the wiring harness (3).
  15. Lower the vehicle.