EXHAUST MANIFOLD
DESCRIPTION
The exhaust manifolds are log type and made of
Hi-Sil-Moly (high temperature resistant) nodular cast
iron. The exhaust manifolds are attached directly to
the cylinder heads and a cross-over pipe connects the
two manifolds.
OPERATION
The exhaust manifolds collects the exhaust gases
exiting the combustion chambers. It then channels
the exhaust gases to the exhaust pipe that is
attached to the rear (right side) manifold.
EXHAUST MANIFOLD - RIGHT
REMOVAL
(1) Disconnect battery negative cable.
(2) Remove the wiper module. (Refer to 8 - ELEC-
TRICAL/WIPERS/WASHERS/WIPER MODULE -
REMOVAL)
(3) Disconnect spark plug wires.
(4) Remove bolts fastening crossover pipe to
exhaust manifold (Fig. 130).
(5) Disconnect and remove the upstream oxygen
sensor (Fig. 133).
(6) Remove the heat shield attaching screws (Fig.
133).
(7) Remove the upper heat shield (Fig. 133).
(8) Raise vehicle on hoist and remove drive belt
shield.
(9) Loosen the power steering pump support strut
lower bolt (Fig. 131).
(10) Disconnect downstream oxygen sensor connec-
tor.
(11) Disconnect catalytic converter pipe from
exhaust manifold (Fig. 132).
(12) Lower vehicle and remove the power steering
pump support strut upper bolt (Fig. 131).
(13) Remove bolts attaching exhaust manifold to
cylinder head and remove manifold (Fig. 133).
(14) Inspect and clean manifold. (Refer to 9 -
ENGINE/MANIFOLDS/EXHAUST MANIFOLD -
CLEANING) (Refer to 9 - ENGINE/MANIFOLDS/
EXHAUST MANIFOLD - INSPECTION)
CLEANING
(1) Discard gasket (if equipped) and clean all sur-
faces of manifold and cylinder head.
Fig. 129 LOWER MANIFOLD TIGHTENING
SEQUENCE
Fig. 130 CROSS-OVER PIPE
1 - CROSS-OVER PIPE
2 - BOLT
3 - GASKET
4 - FLAG NUT
Fig. 131 P/S PUMP STRUT
1 - BOLT - LOWER
2 - STRUT - P/S PUMP
3 - BOLT - UPPER
9 - 152 ENGINE 3.3/3.8L RS
INTAKE MANIFOLD - LOWER (Continued)
To Next Page
Loading...
Need help?
General
