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Home >> Buick >> 2004 >> Century Limited >> Repair and Diagnosis >> External Pages >> Different car >> Section 134 (Engine Mechanical - 3.8L) >> Repair Instructions >> Off-Vehicle Repair Instructions >> Exhaust Gas Recirculation (EGR) and EGR Pipe Removal

Exhaust Gas Recirculation (EGR) and EGR Pipe Removal

WARNING: This page is about a different car, the 2004 Pontiac Grand Prix. However, it is still accessible from the selected car via links, so may be relevant.
  1. Remove the heated oxygen sensor.
    2. Fig 1: Heated Oxygen Sensor
    GM1403423Courtesy of GENERAL MOTORS CORP.
  2. Remove the exhaust manifold heat shield bolts.
    3. Fig 2: Exhaust Manifold Heat Shield
    GM965504Courtesy of GENERAL MOTORS CORP.
  3. Remove the exhaust manifold heat shield.
  4. Remove the exhaust gas recirculation (EGR) valve nuts, EGR valve and gasket.
  5. Remove the EGR valve adapter inlet pipe bolt from the RH exhaust manifold.
  6. Remove the EGR valve outlet pipe bolt, nut and pipe from the lower intake manifold and the EGR valve adapter assembly.
  7. Remove the EGR valve adapter assembly bolts.
    8. Fig 3: View Of EGR Valve Adapter Assembly
    GM36667Courtesy of GENERAL MOTORS CORP.
  8. Remove the EGR valve adapter assembly from the cylinder head.
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