²Bolts to intake 28 N´m (250 in. lbs.)
²Bolt to engine block 54 N´m (40 ft. lbs.)
(4) Position power steering reservoir on manifold
and install bolts.
(5) Connect the fuel line. (Refer to 14 - FUEL SYS-
TEM/FUEL DELIVERY/QUICK CONNECT FIT-
TING - STANDARD PROCEDURE)
(6) Connect coolant temperature sensor/fuel injec-
tor wiring harness electrical connector.
(7) Install the radiator upper and heater supply
hoses.
(8) Install the upper intake manifold. (Refer to 9 -
ENGINE/MANIFOLDS/INTAKE MANIFOLD -
INSTALLATION)
(9) Fill the cooling system. (Refer to 7 - COOLING
- STANDARD PROCEDURE)
EXHAUST MANIFOLD
DESCRIPTION
The exhaust manifold is made of Hi-Silicone Moly
nodular cast iron for strength and high tempera-
tures. The manifold attaches to the cylinder head.
OPERATION
The exhaust manifold collects the exhaust gasses
exiting the combustion chambers. Then it channels
the exhaust gasses to the exhaust pipe attached to
the manifold.
REMOVAL
(1) Raise vehicle and disconnect exhaust pipe from
the exhaust manifold.
(2) Disconnect upstream oxygen sensor connector
at the rear of exhaust manifold.
(3) Remove the bolts attaching the manifold to the
cylinder head.
(4) Remove exhaust manifold.
(5) Inspect the manifold. (Refer to 9 - ENGINE/
MANIFOLDS/EXHAUST MANIFOLD - INSPEC-
TION)
CLEANING
(1) Discard gasket (if equipped) and clean all sur-
faces of manifold and cylinder head.
INSPECTION
(1) Inspect manifold gasket surfaces for flatness
with straight edge. Surface must be flat within 0.15
mm per 300 mm (0.006 in. per foot) of manifold
length.
(2) Inspect manifolds for cracks or distortion.
Replace manifold as necessary.
INSTALLATION
(1) Install exhaust manifold with a new gasket.
Tighten attaching nuts in the sequence shown in
(Fig. 111) to 20 N´m (175 in. lbs.).
(2) Attach exhaust pipe to exhaust manifold and
tighten fasteners to 37 N´m (27 ft. lbs.).
(3) Install and connect the oxygen sensor. (Refer to
14 - FUEL SYSTEM/FUEL INJECTION/O2 SENSOR
- COMPONENT LOCATION)
Fig. 110 Lower Intake Manifold Tightening Sequence
Fig. 111 Exhaust Manifold Tightening Sequence
RSENGINE 2.4L9-59
INTAKE MANIFOLD - LOWER (Continued)
ProCarManuals.com
REMOVAL - ENGINE ASSEMBLY
(1) Perform fuel pressure release procedure. (Refer
to 14 - FUEL SYSTEM/FUEL DELIVERY - STAN-
DARD PROCEDURE)
(2) Disconnect the battery.
(3) Remove air cleaner and hoses.
(4) Disconnect the fuel line from fuel rail. (Refer to
14 - FUEL SYSTEM/FUEL DELIVERY/QUICK
CONNECT FITTING - STANDARD PROCEDURE)
(5) Remove the wiper module. (Refer to 8 - ELEC-
TRICAL/WIPERS/WASHERS/WIPER MODULE -
REMOVAL)
(6) Block off heater hoses to the rear heater sys-
tem, if equipped, using pinch-off pliers.
(7) Drain the cooling system. (Refer to 7 - COOL-
ING - STANDARD PROCEDURE)
(8) Disconnect the heater hoses.
(9) Remove the radiator upper support crossmem-
ber. (Refer to 23 - BODY/EXTERIOR/GRILLE OPEN-
ING REINFORCEMENT - REMOVAL)
(10) Remove the radiator fans. (Refer to 7 - COOL-
ING/ENGINE/RADIATOR FAN - REMOVAL)
(11) Disconnect the throttle cables from the throt-
tle body.
(12) Disconnect the MAP, IAC, and TPS electrical
connectors.
(13) Disconnect the EGR transducer electrical con-
nector.
(14) Disconnect the vacuum hoses from throttle
body.
(15) Disconnect the brake booster and speed con-
trol vacuum hoses.(16) Disengage wire harness clip from the right
side engine mount.
(17) Remove the power steering reservoir from
mounting position and set aside. Do not disconnect
hose.
(18) Disconnect ground strap from rear of cylinder
head.
(19) Disconnect engine coolant temperature (ECT)
sensor and ignition coil electrical connectors.
(20) Disconnect the fuel injector electrical harness
connector and disengage clip from support bracket.
(21) Disconnect crank sensor connector.
(22) Disconnect camshaft sensor connector.
(23) Evacuate air conditioning system.
(24) Disconnect A/C compressor electrical connec-
tor.
(25) Disconnect the A/C lines from compressor.
Cover and seal all openings of hoses and compressor.
(26) Remove the radiator upper hose.
(27) Disengage electrical harness clip at transaxle
dipstick tube.
(28) Remove transaxle dipstick tube. Seal opening
using a suitable plug.
(29) Disconnect cooler hoses from transaxle.
(30) Disconnect transaxle shift linkage and electri-
cal connectors.
(31) Raise vehicle on hoist and drain the engine
oil.
(32) Remove the axle shafts. (Refer to 3 - DIFFER-
ENTIAL & DRIVELINE/HALF SHAFT - REMOVAL)
(33) Remove crossmember cradle plate (Fig. 6).
(34)AWD equipped:Remove the power transfer
unit (PTU).
(35) Disconnect exhaust pipe from the manifold
(Fig. 7).
Fig. 5 CORE HOLE PLUG REMOVAL
1 - CYLINDER BLOCK
2 - REMOVE PLUG WITH PLIERS
3 - STRIKE HERE WITH HAMMER
4 - DRIFT PUNCH
5 - CUP PLUG
Fig. 6 Crossmember Cradle Plate
1 - CRADLE PLATE
9 - 82 ENGINE 3.3/3.8LRS
ENGINE 3.3/3.8L (Continued)
ProCarManuals.com
(36) Remove front engine mount and bracket as an
assembly.
(37) Remove the engine rear mount bracket.
(38) Remove the engine to transaxle struts (Fig. 8).
(39) Remove transaxle case cover (Fig. 8).
(40) Remove flex plate to torque converter bolts.
(41) Remove the power steering pressure hose sup-
port clip attaching bolt.
(42) Disconnect the knock sensor electrical connec-
tor (3.8L only).
(43) Disconnect the engine block heater electrical
connector, if equipped.
(44) Remove the accessory belt splash shield.
(45) Remove accessory drive belt. (Refer to 7 -
COOLING/ACCESSORY DRIVE/DRIVE BELTS -
REMOVAL)
(46) Disconnect the radiator lower hose.
(47) Remove air conditioning compressor from
engine.
(48) Remove the generator. (Refer to 8 - ELECTRI-
CAL/CHARGING/GENERATOR - REMOVAL)
(49) Remove the water pump pulley attaching
bolts and position pulley between pump hub and
housing.
(50) Disconnect the oil pressure switch electrical
connector.
(51) Disconnect wiring harness support clip from
dipstick tube.(52) Install Special Tools 6912 and 8444 Adapters
on the right side (rear) of engine block (Fig. 9).
Fig. 7 Catalytic Converter to Exhaust Manifold
1 - FLAG NUT
2 - GASKET
3 - BOLT
4 - CATALYTIC CONVERTER
Fig. 8 POWERTRAIN SUPPORTS AND DUST COVER
1 - BRACKET - ENGINE REAR MOUNT
2 - BOLT - TRANSAXLE CASE COVER
3 - STRUT - TRANSAXLE TO ENGINE HORIZONTAL
4 - BOLT - HORIZONTAL STRUT
5 - BOLT - STRUT TO TRANSAXLE
6 - COVER - TRANSAXLE CASE LOWER
7 - STRUT - TRANSAXLE TO ENGINE
8 - BOLT - STRUT TO ENGINE
9 - BOLT - ENGINE REAR MOUNT BRACKET
Fig. 9 ADAPTER TOOLS MOUNTED ON BLOCK
1 - SPECIAL TOOL 6912
2 - SPECIAL TOOL 8444
RSENGINE 3.3/3.8L9-83
ENGINE 3.3/3.8L (Continued)
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(53) Lower the vehicle.
(54) Remove the power steering pump and set
aside.
(55) Raise vehicle enough to allow engine dolly
Special Tool 6135 and cradle Special Tool 6710 with
post Special Tool 6848 and adaptor Special Tool 6909
to be installed under vehicle (Fig. 10).
(56) Loosen cradle engine mounts to allow move-
ment for positioning onto engine locating holes on the
engine. Lower vehicle and position cradle mounts
until the engine is resting on mounts. Tighten
mounts to cradle frame. This will keep mounts from
moving when removing or installing engine and
transmission.
(57) Lower vehicle so the weight ofONLY THE
ENGINE AND TRANSMISSIONis on the cradle.
(58) Install and secure the safety straps to the cra-
dle fixture and around the engine.(59) Remove the engine right side mount to engine
attaching bolts (Fig. 11).
(60) Remove the left mount through bolt (Fig. 12).
(61) Raise vehicle slowly. It is necessary to move
the engine/transmission assembly on the cradle to
allow for removal around body flanges.
INSTALLATION - ENGINE ASSEMBLY
(1) Position engine and transmission assembly
under vehicle. Slowly lower the vehicle down over the
engine and transmission. It may be necessary to
move the engine/transmission assembly with the cra-
dle for clearance around body flanges.
(2) Align engine and transmission mounts to
attaching points. Install mounting bolts at the right
engine (Fig. 11) and left transmission mount (Fig.
12).
(3) Remove the safety straps from around engine.
Fig. 10 Positioning Engine Cradle Support Post Mounts
1 - SPECIAL TOOL 8444 4 - SPECIAL TOOLS 6135 & 6710
2 - SPECIAL TOOLS 6848 5 - SPECIAL TOOLS 6848
3 - SPECIAL TOOL 6912 6 - SAFETY STRAPS
9 - 84 ENGINE 3.3/3.8LRS
ENGINE 3.3/3.8L (Continued)
ProCarManuals.com
(4) Slowly raise vehicle enough to remove the
engine dolly and cradle Special Tools 6135, 6710,
6848 and 6909 (Fig. 10).
(5) Remove Special Tools 6912 and 8444.
(6) Lower the vehicle.
(7) Install power steering pump and pressure line
support.(8) Install the generator and wiring harness.
(Refer to 8 - ELECTRICAL/CHARGING/GENERA-
TOR - INSTALLATION)
(9) Raise vehicle.
(10) Attach wiring harness support clip to the dip-
stick tube.
(11) Connect oil pressure switch electrical connec-
tor.
(12) Install the A/C compressor.
(13) Install the water pump pulley.
(14) Connect the radiator lower hose.
(15) Install the accessory drive belt and splash
shield. (Refer to 7 - COOLING/ACCESSORY DRIVE/
DRIVE BELTS - INSTALLATION)
(16) Connect the engine block heater electrical con-
nector, if equipped.
(17) Connect the knock sensor electrical connector
(3.8L only).
(18) Install the torque converter to flex plate bolts.
(19) Install the transaxle case cover (Fig. 8).
(20) Install the powertrain struts (Fig. 8).
(21) Install the engine rear mount bracket.
(22) Install the engine front mount and bracket
assembly.
(23)AWD equipped;Install the power transfer
unit (PTU).
(24) Install the axle shafts. (Refer to 3 - DIFFER-
ENTIAL & DRIVELINE/HALF SHAFT - INSTALLA-
TION)
(25) Connect exhaust pipe to manifold (Fig. 7).
(26) Install crossmember cradle plate (Fig. 6).
(27) Lower vehicle.
(28) Connect transaxle shift linkage.
(29) Connect transaxle electrical connectors.
(30) Connect transaxle cooler hoses.
(31) Install transaxle dipstick tube and attach
electrical harness clip.
(32) Connect the radiator upper hose.
(33) Connect the A/C lines to compressor.
(34) Connect the A/C compressor electrical connec-
tor.
(35) Evacuate and recharge A/C system.
(36) Connect crankshaft and camshaft position
sensors.
(37) Connect the fuel injector electrical harness
connector and engage clip to support bracket.
(38) Connect engine coolant temperature (ECT)
sensor and ignition coil electrical connectors.
(39) Connect the ground strap to rear of cylinder
head.
(40) Install power steering reservoir.
(41) Engage wire harness clip to engine right side
mount.
(42) Connect the brake booster and speed control
vacuum hoses.
Fig. 11 Right Mount to Engine
1 - BOLT
2 - MOUNT BRACKET
3 - ENGINE RIGHT MOUNT ASSEMBLY
Fig. 12 LEFT MOUNT TO FRAME BRACKET
1 - FRAME BRACKET
2 - FRAME RAIL - LEFT
3 - BOLT
4 - TRANSAXLE MOUNT
RSENGINE 3.3/3.8L9-85
ENGINE 3.3/3.8L (Continued)
ProCarManuals.com
(9) Install the cylinder head covers. (Refer to 9 -
ENGINE/CYLINDER HEAD/CYLINDER HEAD
COVER(S) - INSTALLATION)
(10) Install the exhaust manifolds. (Refer to 9 -
ENGINE/MANIFOLDS/EXHAUST MANIFOLD -
INSTALLATION)
(11) Install new O-ring on dipstick tube. Install
dipstick tube assembly (Fig. 16).
(12) Install the spark plugs.
(13) Install upper and lower intake manifolds.
(Refer to 9 - ENGINE/MANIFOLDS/INTAKE MANI-
FOLD - INSTALLATION)
(14) Fill the cooling system. (Refer to 7 - COOL-
ING - STANDARD PROCEDURE)
(15) Connect negative cable to battery.
CYLINDER HEAD COVER(S)
DESCRIPTION
The cylinder head covers are made of stamped
steel. The covers are sealed with steel reinforced sil-
icon rubber gaskets. The cylinder head cover uses
rubber isolators at each fastener location (Fig. 21).
NOTE: Due to the tight packaging near the cylinder
head covers, which makes spill clean-up difficult, a
spill during an engine oil change may be misinter-
preted as an oil leak. When investigating an oil leak
in the location of the cylinder head covers and
intake manifold, follow the procedure found in Oil
Leak Diagnosis (Refer to 9 - ENGINE - DIAGNOSIS
AND TESTING) for determining the source of a leak.
CYLINDER HEAD COVER -
RIGHT
REMOVAL
(1) Disconnect negative cable from battery.
(2) Remove the wiper module. (Refer to 8 - ELEC-
TRICAL/WIPERS/WASHERS/WIPER MODULE -
REMOVAL)
(3) Disconnect spark plug wires from plugs.(4) Disconnect power steering pump supply hose
support clip from cylinder head cover (Fig. 22).
(5) Disconnect PCV hose from cylinder head cover
(Fig. 23).
(6) Remove cylinder head cover bolts.
(7) Remove cylinder head cover and gasket (Fig.
21).
Fig. 20 CYLINDER HEAD TIGHTENING SEQUENCE
Fig. 21 Cylinder Head Cover
1 - CYLINDER HEAD COVER
2 - BOLT
Fig. 22 P/S Supply Hose
1 - POWER STEERING RESERVOIR
2 - CLAMP
3 - SUPPLY HOSE
4 - CLIP
5 - POWER STEERING PUMP
RSENGINE 3.3/3.8L9-97
CYLINDER HEAD (Continued)
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INSTALLATION
(1) Clean cylinder head and cover mating surfaces.
Inspect cylinder head cover surface for flatness.
Replace gasket as necessary.
(2) Inspect seal on the cover bolt for wear or dam-
age (Fig. 24). Replace bolt assembly as necessary.
NOTE: The cylinder head cover bolts contain a
torque limiter sleeve and a seal (Fig. 24). The seal
and torque sleeve is replaced with the bolt.
(3) Assemble gasket to cylinder cover by inserting
the bolt assemblies through each bolt hole on the
cover and gasket (Fig. 24).
(4) Install cylinder head cover and bolts (Fig. 25).
(5) Tighten cylinder head cover bolts to 12 N´m
(105 in. lbs.) (Fig. 25).
(6) Connect PCV hose to cylinder head cover.
(7) Connect power steering pump supply hose sup-
port clip to cylinder head cover (Fig. 22).
(8) Connect spark plug wires to spark plugs.
(9) Install wiper module. (Refer to 8 - ELECTRI-
CAL/WIPERS/WASHERS/WIPER MODULE -
INSTALLATION)
(10) Connect negative cable to battery.
CYLINDER HEAD COVER -
LEFT
REMOVAL
(1) Disconnect spark plug wires from spark plugs.
(2) Disconnect crankcase vent hose from cylinder
head cover.
(3) Remove cylinder head cover bolts.
(4) Remove cylinder head cover and gasket.
Fig. 23 PCV Hose
1 - HOSE - PCV
2 - P C V VA LV E
Fig. 24 CYLINDER HEAD COVER GASKET
1 - CYLINDER HEAD COVER
2 - BOLT
3 - SEAL (SERVICED WITH BOLT)
4 - GASKET
Fig. 25 Cylinder Head Cover
1 - CYLINDER HEAD COVER
2 - BOLT
9 - 98 ENGINE 3.3/3.8LRS
CYLINDER HEAD COVER - RIGHT (Continued)
ProCarManuals.com
between cylinder heads and houses the coolant ther-
mostat (Fig. 121).
The intake manifold utilizes a compact design with
very low restriction and outstanding flow balance.
This design allows the engine to perform with a wide
torque curve while increasing higher rpm horse-
power.
The composite upper intake for the 3.3L engine has
a unique cover over the upper portion of the manifold
(Fig. 119). This cover is designed to absorb intake
noises and also offers styling to the engine. This
cover, under any circumstance, should never be
removed. The fasteners attaching the upper intake
manifold can be accessed without removing this
cover. If, for some reason, the molded-in vacuum
ports break, the composite manifold can salvaged.
The vacuum ports are designed to break at the shoul-
der, if overloaded. Additional material in the shoulder
area provides sufficient stock to repair. For more
information and procedure, (Refer to 9 - ENGINE/
MANIFOLDS/INTAKE MANIFOLD - STANDARD
PROCEDURE). Also, if the special screws that attach
the MAP sensor, power steering reservoir, throttle
cable bracket, and the EGR tube become stripped, an
oversized screw is available to repair the stripped-out
condition. For more information and procedure,
(Refer to 9 - ENGINE/MANIFOLDS/INTAKE MANI-
FOLD - STANDARD PROCEDURE)
OPERATION
The intake manifold delivers air to the combustion
chambers. This air allows the fuel delivered by the
fuel injectors to ignite when the spark plug fire.
DIAGNOSIS AND TESTING - INTAKE
MANIFOLD LEAKS
An intake manifold air leak is characterized by
lower than normal manifold vacuum. Also, one or
more cylinders may not be functioning.
WARNING: USE EXTREME CAUTION WHEN THE
ENGINE IS OPERATING. DO NOT STAND IN A
DIRECT LINE WITH THE FAN. DO NOT PUT YOUR
HANDS NEAR THE PULLEYS, BELTS OR THE FAN.
DO NOT WEAR LOOSE CLOTHING.
(1) Start the engine.
(2) Spray a small stream of water (Spray Bottle) at
the suspected leak area.
(3) If engine RPM'S change, the area of the sus-
pected leak has been found.
(4) Repair as required.INTAKE MANIFOLD - UPPER
3.3L
STANDARD PROCEDURE - MANIFOLD
STRIPPED THREAD REPAIR
The composite upper intake manifold thread
bosses, if stripped out, can be repaired by utilizing a
repair screw available through Mopartparts. Repair
screws are available for the following manifold
attached components:
²MAP sensor
²Power steering reservoir
²EGR tube
²Throttle cable bracket
The repair screws require a unique tightening
torque specification from the original screw. Refer to
the following chart for specification.
Fig. 119 INTAKE MANIFOLD - UPPER 3.3L
1 - BOLT
2 - MAP SENSOR
3 - SCREW
4 - MANIFOLD - UPPER
5 - WIRE HARNESS
6 - GASKET (3 PER CYL. BANK)
RSENGINE 3.3/3.8L9 - 141
INTAKE MANIFOLD (Continued)
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