Exhaust Manifold Installation - Right (W/RPO NC1 or NF7)

WARNING: This page is about a different car, the 2002 Oldsmobile Aurora and 2001 Oldsmobile Aurora. However, it is still accessible from the selected car via links, so may be relevant.

CAUTION: Refer to FASTENER NOTICE in Cautions and Notices.

If the engine is equipped with coolant heaters, install the right side (1) heater as follows:
1. 1.1. Place the coolant heater (1) in position on the cylinder block.
2. 1.2. Install the coolant heater bolt.
  Tighten
  
  Tighten the coolant heater bolt to 10 N.m (89 in lbs).
Fig 1: Installing Right Side Coolant Heater
Courtesy of GENERAL MOTORS CORP.
Position a new manifold gasket (1) in place on the cylinder head studs.
Using two hands, position the manifold (2) onto the cylinder head.
Install two outer manifold nuts (3) to hold the manifold in place.
Install the remaining manifold nuts.
Tighten

Tighten the exhaust manifold nuts (3) to 25 N.m (18 ft lbs).

Fig 2: Installing Manifold & Gasket
Courtesy of GENERAL MOTORS CORP.
Coat the oxygen sensor threads with high temperature anti-seize, GM P/N 12377953 or equivalent.
Install the oxygen sensor (1).
Tighten

Tighten the oxygen sensor to 40 N.m (30 ft lbs).

Fig 3: Installing Oxygen Sensor
Courtesy of GENERAL MOTORS CORP.

Important: DO NOT reuse the old A.I.R. valve pipe gasket.
Install the NEW A.I.R. valve pipe gasket.
Install the A.I.R. valve.
Install the A.I.R. valve bolts through the mounting bracket.
Tighten

Tighten the A.I.R. valve bolts to 9 N.m (80 in lbs).
Install the A.I.R. valve pipe nuts to the exhaust manifold.
Tighten

Tighten the A.I.R. valve pipe nuts to 9 N.m (80 in lbs).

Fig 4: Installing A.I.R. Valve
Courtesy of GENERAL MOTORS CORP.
Connect the vacuum harness to the A.I.R. valve and vacuum solenoid valve.

Fig 5: Connecting Vacuum Harness To A.I.R. Valve & Vacuum Solenoid Valve
Courtesy of GENERAL MOTORS CORP.
Place the exhaust intermediate pipe (2) in position.
Install the intermediate pipe stud at the cylinder head (3) and the bolt at the lower crankcase (1).
Tighten
1. 14.1. Tighten the intermediate pipe-to-lower crankcase bolt (1) to 35 N.m (18 ft lbs).
2. 14.2. Tighten the intermediate pipe-to-cylinder head stud (3) to 25 N.m (18 ft lbs).
Fig 6: Installing Exhaust Intermediate Pipe
Courtesy of GENERAL MOTORS CORP.

Important: The EGR valve inlet pipe incorporates a crush seal connection at the water crossover. The EGR valve inlet pipe must be replaced if disconnected from the water crossover.
Hand start the NEW EGR inlet tube to intermediate pipe nut (1) to prevent crossthreading.
Tighten

Tighten the EGR inlet tube-to-intermediate pipe nut to 60 N.m (44 ft lbs).
Connect the EGR inlet pipe flange (3) to the water crossover.
Install the EGR inlet pipe to water crossover flange bolt (2).
Tighten

Tighten the EGR inlet tube to water crossover bolt to 25 N.m (18 ft lbs).

Fig 7: Installing EGR Inlet Pipe
Courtesy of GENERAL MOTORS CORP.