Exhaust Manifold Installation - Left (with 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.

Important: Align the threaded hole in the engine block with the hole labeled L (2) on the left coolant heater.

Install the left engine coolant heater.

Fig 1: Identifying Left Coolant Heater Markings
Courtesy of GENERAL MOTORS CORP.

CAUTION: Refer to in FASTENER NOTICE .
Install the left engine coolant heater bolt.
Tighten

Tighten the left coolant heater bolt to 9 N.m (80 in lbs).

Fig 2: Installing Left Engine Coolant Heater
Courtesy of GENERAL MOTORS CORP.

Important: Installing the exhaust manifold/crossover pipe assembly with the engine on an engine stand is difficult. Remove the engine from the engine stand and install the exhaust manifold with the engine properly supported on the floor or on a bench.

Important: You must install a NEW crossover flange gasket.
Install a NEW manifold to crossover flange gasket onto the left exhaust manifold flange.
Position a NEW exhaust manifold gasket onto the left exhaust manifold.
Install the exhaust manifold bolts into the left exhaust manifold.
Install the left exhaust manifold to the crossover pipe from the right exhaust manifold and up to the left cylinder head.

Fig 3: Installing Left Exhaust Manifold Gasket
Courtesy of GENERAL MOTORS CORP.
Install the exhaust manifold bolts into the left cylinder head.
Tighten

Tighten the exhaust manifold bolts to 25 N.m (18 ft lbs).
Install the left exhaust manifold to crossover pipe flange bolts.
Tighten

Tighten the left exhaust manifold to crossover flange bolts to 25 N.m (18 ft lbs).
Place the exhaust manifold heat shield in position.
Install the exhaust manifold heat shield bolts.
Tighten

Tighten the exhaust manifold heat shield bolts to 9 N.m (80 in lbs).

Fig 4: Installing Exhaust Manifold Heat Shield
Courtesy of GENERAL MOTORS CORP.
Install a NEW A.I.R. manifold gasket.
Install the left A.I.R. manifold.
Install the left A.I.R. manifold bolts.
Tighten

Tighten the left A.I.R. manifold bolts to 10 N.m (89 in lbs).

Fig 5: Installing new A.I.R. Manifold & Gasket
Courtesy of GENERAL MOTORS CORP.
Install the left A.I.R. control valve bolt to the torque strut bracket.
Tighten

Tighten the left A.I.R. control valve bolt to 25 N.m (18 ft lbs).
Install the left A.I.R. control valve nut to the stud.
Tighten

Tighten the left A.I.R. control valve nut to 50 N.m (37 ft lbs).
Install the left A.I.R. control valve pipe bolt and nut to the left A.I.R. manifold.
Tighten

Tighten the A.I.R. control valve pipe bolt and nut to 9 N.m (80 in lbs).
Connect the vacuum tube to the A.I.R. control valve.

Fig 6: Installing new A.I.R. Control
Courtesy of GENERAL MOTORS CORP.
Connect the A.I.R. vacuum hose to the throttle body (1).

Fig 7: Connecting A.I.R. Vacuum Hose To Throttle Body
Courtesy of GENERAL MOTORS CORP.