When replacing the distributor cap, transfer spark
plug wires from the original cap to the new cap one
at a time. Ensure that each wire is installed into the
tower of the new cap that corresponds to its tower
position in the original cap. Fully seat the wires into
the towers. If necessary, refer to the engine firing
order diagram.
Light scaling of the terminals can be cleaned with
a sharp knife. If the terminals are heavily scaled,
replace the distributor cap.
A cap that is greasy, dirty or has a powder-like
substance on the inside should be cleaned with asolution of warm water and a mild detergent. Scrub
the cap with a soft brush. Thoroughly rinse the cap
and dry it with a clean soft cloth.
DISTRIBUTOR ROTORÐ3.0L
Replace the rotor if it is cracked, the tip is exces-
sively burned or heavily scaled (Fig. 10).
SPECIFICATIONS
SPARK PLUG
TORQUE
DESCRIPTION......................TORQUE
Distributor Hold Down........14N´m(124 in. lbs.)
Ignition Coil Bracket..........10N´m(96in.lbs.)
Ignition Switch...............2N´m(17in.lbs.)
Spark Plugs.................28N´m(60in.lbs.)
SPARK PLUG CABLE RESISTANCEÐ3.0L
Fig. 9 Distributor Cap InspectionÐTypical
Fig. 10 Rotor InspectionÐTypical
Engine Spark Plug Gap Thread Size
3.0L RN11YC4 0.039 TO 0.044 14mm (3/4 in.) reach
CABLE Maximum
Resistance
#1 14.0K ohms
#2 10.4K ohms
#3 14.9K ohms
#4 11.5K ohms
#5 17.5K ohms
#6 10.3K ohms
Coil Lead 11.1K ohms
NSIGNITION SYSTEM 8D - 27
CLEANING AND INSPECTION (Continued)
3.3/3.8L ENGINE
INDEX
page page
DESCRIPTION AND OPERATION
FIRING ORDERÐ3.3/3.8L................. 28
REMOVAL AND INSTALLATION
CAMSHAFT POSITION SENSOR............ 31
CRANKSHAFT POSITION SENSOR.......... 30
ENGINE COOLANT TEMPERATURE SENSOR . . 32
IGNITION COIL......................... 30
KNOCK SENSORÐ3.3/3.8L................ 32
MANIFOLD ABSOLUTE PRESSURE (MAP)
SENSOR............................. 32SPARK PLUG CABLE SERVICEÐ3.3/3.8L
ENGINES............................ 28
SPARK PLUG SERVICEÐ3.3/3.8L ENGINES . . . 29
THROTTLE POSITION SENSOR............ 32
SPECIFICATIONS
IGNITION COIL......................... 33
SPARK PLUG CABLE RESISTANCEÐ3.3/3.8L . . 34
SPARK PLUG........................... 33
TORQUE.............................. 34
DESCRIPTION AND OPERATION
FIRING ORDERÐ3.3/3.8L
The firing order for 3.3L and 3.8L engines is 1-2-3-
4-5-6.
REMOVAL AND INSTALLATION
SPARK PLUG CABLE SERVICEÐ3.3/3.8L ENGINES
WARNING: The ignition cables should not be
removed while the engine is hot. This could cause
sever injury/burns and can cause damage to the
ignition cables.
The spark plug boot heat shield needs to be
installed correctly on the boot before being installed
on the engine (Fig. 1). If it is not installed correctly
engine misfire would occur.
Do not use pliers to pull the boot/heat shield
assembly from the spark plugs. This will damage the
shield assembly.
Spark plug boot heat shields must be replaced if
they are bent or damaged. It is extremely important
the shield is reinstalled correctly as shown. The bot-
tom of the spark plug heat shield must make contact
with the spark plug socket hex.
Firing OrderÐ3.3/3.8L
Fig. 1 Spark Plug Boot/Heat Shield Orientation
8D - 28 IGNITION SYSTEMNS
CAUTION: Never coat the inside of spark plug
boots with silicone grease. Some types of silicone
grease can damage the ignition cable conductor.
SPARK PLUG CABLES #3 AND #5
REMOVAL
(1) Remove the resonator.
(2) Grasp the spark plug boot/heat shield as close
as possible to the spark plug.Twist the boot
slightly to break its seal with the plug and pull
straight back. Do not use pliers, pull on the
ignition cable, or pull the spark plug boot at an
angle.This could damage the spark plug insulator,
terminal, or the cable insulation. Wipe spark plug
insulator clean with a dry cloth before installation.
(3) Remove the cable from the retaining bracket.
Make sure that they are also detached from the rear
retaining clip mounted on the rear of the intake
manifold.
INSTALLATION
(1) When installing the spark plug cables, make
sure the coil and spark plug insulator and terminals
are fully seated. Aclick sound should be heard or
terminal engagement is felt when the terminals
are properly attached.
(2) Install the cable into the retaining bracket.
Make sure that they are also attached to the rear
retaining clip mounted on the rear of the intake
manifold.
(3) Install the resonator.
SPARK PLUG CABLE #1
REMOVAL
(1) Remove the accessory drive belt, refer to Group
7, Cooling.
(2) Remove the four bolts from the upper half of
the generator bracket.
(3) Push the Generator rearward.
(4) Grasp the spark plug boot/shield assembly as
close as possible to the spark plug.Twist the boot
slightly to break its seal with the plug and pull
straight back. Do not use pliers, pull on the
ignition cable, or pull the spark plug boot at an
angle.This could damage the spark plug insulator,
terminal, or the cable insulation. Wipe spark plug
insulator clean with a dry cloth before installation.
(5) Remove the cable from the retaining bracket.
INSTALLATION
(1) When installing the spark plug cables, make
sure the coil and spark plug insulator and terminals
are fully seated. Aclick sound should be heard orterminal engagement is felt when the terminals
are properly attached.
(2) Rotate Generator back into place.
(3) Install upper Generator bracket with the four
bolts.
(4) Install the accessory drive belt, refer to Group
7, Cooling.
SPARK PLUG SERVICEÐ3.3/3.8L ENGINES
WARNING: The ignition cables should not be
removed while the engine is hot. This could cause
server injury/burns and can cause damage to the
ignition cables.
Use extreme care when removing and installing
the spark plug cables.
The spark plug boot heat shield needs to be
installed correctly on the boot before being installed
on the engine (Fig. 1). If it is not installed correctly
engine misfire would occur.
Do not use pliers to pull the boot/heat shield
assembly from the spark plugs. This will damage the
shield assembly.
SPARK PLUG #3 AND #5
REMOVAL
(1) Remove the resonator.
(2) Remove intake strut to cylinder head bolt at
cylinder head.
(3) Loosen bolt for intake strut at intake.
(4) Swing strut away.
(5) Grasp the spark plug boot/shield assembly as
close as possible to the spark plug.Twist the boot/
shield assembly slightly to break the seal with
the plug and pull straight out. Do not use pli-
ers, pull on the ignition cable, or pull the spark
plug boot at an angle.This could damage the
spark plug insulator, terminal, heat shield or the
insulation. Wipe spark plug insulator clean with a
dry cloth before installation.
(6) Remove spark plug
INSTALLATION
(1) Install spark plug and tighten to 28 N´m (20 ft.
lbs.).
(2) When installing the spark plug cables, make
sure spark plug insulator and terminals are fully
seated. Aclick sound should be heard or felt
when the terminals are properly attached.
(3) Install the cable into the retaining bracket.
Make sure that they are also attached to the rear
retaining clip mounted on the rear of the intake
manifold.
(4) Swing strut back into place.
NSIGNITION SYSTEM 8D - 29
REMOVAL AND INSTALLATION (Continued)
While holding the sensor in this position, and install
and tighten the retaining bolt to 11.9 N´m (105 in.
lbs.) torque.
(2) Raise and support vehicle.
(3) Connect crankshaft position sensor electrical
connector to the wiring harness connector.
CAMSHAFT POSITION SENSOR
REMOVAL
(1) Disconnect camshaft position sensor electrical
connector from the wiring harness connector (Fig. 5).
(2) Remove bolt holding sensor (Fig. 6).There is a
hole in the bracket for tool access to the sensor
bolt.
(3) Rotate sensor away from block (Fig. 7).
(4) Pull sensor up out of the chain case cover.Do
not pull on the sensor lead.There is an O-ring on
the sensor case. The O-ring may make removal diffi-
cult. A light tap to top of sensor prior to removal may
reduce force needed for removal.
INSTALLATION
If the removed sensor is reinstalled, clean off
the old spacer on the sensor face. A NEW
SPACER must be attached to the face beforeinstallation.Inspect O-ring for damage, replace if
necessary. If the sensor is being replaced, confirm
that the paper spacer is attached to the face and O-
ring is positioned in groove of the new sensor (Fig. 8).
(1) Apply a couple drops of clean engine oil to the
O-ring prior to installation.
(2) Install sensor in the chain case cover and
rotate into position.
(3) Push sensor down until contact is made with
the camshaft gear. While holding the sensor in this
position, install and tighten the retaining bolt 14
N´m (125 in. lbs.) torque.
(4) Connect camshaft position sensor electrical
connector to harness connector.
Fig. 4 Crankshaft Position Sensor and Spacer
Fig. 5 Camshaft Position Sensor
Fig. 6 Camshaft Sensor Bolt Removal/Installation
Fig. 7 Camshaft Sensor Removal/Installation
NSIGNITION SYSTEM 8D - 31
REMOVAL AND INSTALLATION (Continued)
MANIFOLD ABSOLUTE PRESSURE (MAP) SENSOR
REMOVAL
(1) Disconnect electrical connector from MAP sen-
sor.
(2) Remove 2 screws holding sensor to intake man-
ifold (Fig. 9).
(3) Remove sensor from manifold.
INSTALLATION
Reverse the above procedure for installation.
ENGINE COOLANT TEMPERATURE SENSOR
The Engine Coolant Temperature (ECT) sensor is
located below the ignition coil (Fig. 10).
REMOVAL
(1) Drain cooling system until coolant level is
below sensor. Refer to Group 7, Cooling System.
(2) Remove electrical connector from coil (Fig. 11).
(3) Remove coil mounting screws.
(4) Rotate coil away from engine coolant tempera-
ture sensor.
(5) Disconnect electrical connector from engine
coolant temperature sensor.
(6) Remove sensor from engine.
INSTALLATION
(1) Tighten the sensor to 7 N´m (60 in. lbs.) torque.
(2) Connect electrical connector to sensor.
(3) Fill cooling system. Refer to Group 7, Cooling
System.
(4) Install coil. Tighten coil mounting screws to 12
N´m (105 in. lbs.) torque.
(5) Connect electrical connector to coil.
THROTTLE POSITION SENSOR
Refer to Group 14, Fuel Injection Section, for
Removal/Installation.
KNOCK SENSORÐ3.3/3.8L
The knock sensor threads into the side of the cyl-
inder block in front of the starter (Fig. 12).
Fig. 8 Camshaft Position Sensor and Spacer
Fig. 9 Manifold Absolute Pressure Sensor
Fig. 10 Engine Coolant Temperature Sensor
Fig. 11 Ignition Coil Removal
8D - 32 IGNITION SYSTEMNS
REMOVAL AND INSTALLATION (Continued)
SPARK PLUG
* New Spark Plug Gap
TORQUE
DESCRIPTION......................TORQUE
3.3L Camshaft Position
Sensor Screw.............12N´m(105 in. lbs.)
3.3L Engine Coolant Sensor......7N´m(60in.lbs.)
3.3L Crankshaft Position
Sensor Screw.............12N´m(105 in. lbs.)
3.3/3.8L Ignition Coil.........12N´m(105 in. lbs.)
Ignition Switch...............2N´m(17in.lbs.)
Spark Plugs.................28N´m(20ft.lbs.)
SPARK PLUG CABLE RESISTANCEÐ3.3/3.8L
Engine Spark Plug Gap * Thread Size
3.3L RN14PMP5 0.048 TO 0.053 14mm (3/4 in.) reach
3.8L RN14PMP5 0.048 TO 0.053 14mm (3/4 in. ) reach
CABLE Maximum
Resistance
#1 18.5K ohms
#2 15.5K ohms
#3 20.4K ohms
#4 21.2K ohms
#5 27.7K ohms
#6 26.7K ohms
8D - 34 IGNITION SYSTEMNS
SPECIFICATIONS (Continued)
CONDITION POSSIBLE CAUSES CORRECTION
ERRATIC POINTER
MOVEMENT1. Erratic Message from
another Module.1. (a) Check the BCM using a scan tool If OK, go to
Step (b). If not OK, refer to the BCM section of the
service manual to repair the BCM.
(b) Check the PCM using a scan tool. If OK, go to Step
(c). If not OK, refer to the PCM section of the service
manual to repair the PCM.
(c) Check the speed signal input into the PCM. The
speed signal originates from one of the following
sources:
²A distance sensor for vehicles with 3 speed automatic
transmission. Check continuity from distance sensor to
PCM. If OK, replace distance sensor. If not OK, repair
wiring.
²The Electronic Transmission Control Module (TCM)
vehicles with the 4 speed electronic transmissions.
Check continuity from TCM to engine controller. If OK,
use a scan tool to check TCM. Refer to the electronic
section of the service manual to repair the TCM. If not
OK, repair wiring.
2. Internal Cluster Failure. 2. (a) Perform cluster self diagnostic test and check for
fault codes.
²If the pointer moves during test but still appears
erratic and fault codes 110 or 111 don't appear in the
odometer display, then go to Step (b).
²If fault code 110 is displayed in the odometer, go to
Step (e).
²If fault code 111 appears in the odometer display go
to Step (d).
²If fault codes 905, 920, or 940 are displayed in the
odometer display refer to the fault code chart to identify
which module is causing the fault and repair module.
(b) Replace cluster subdial assembly. To Step (c).
(c) Connect cluster into instrument panel wiring
harness. Place it back into the proper position in the
instrument panel. Put in the top two mounting screws to
hold the cluster in place. DO NOT COMPLETELY
INSTALL CLUSTER TO INSTRUMENT PANEL UNTIL
UNIT IS CALIBRATED AND TESTED. Go to Step (d).
(d) Use a scan tool to calibrate cluster and perform Self
Diagnostic Test. If OK, continue installation. If not OK,
go to Step (e).
Replace main cluster pc board and use a scan tool to
calibrate cluster. If not OK, look at another possible
cause for the speedometer failure.
NSINSTRUMENT PANEL AND SYSTEMS 8E - 5
DIAGNOSIS AND TESTING (Continued)
TACHOMETER DIAGNOSIS
CONDITION POSSIBLE CAUSES CORRECTION
NO POINTER
MOVEMENT1. Internal Cluster Failure. 1. (a) Perform Cluster Self Diagnostic Test and check
for fault codes.
²If tachometer pointer moves to calibration points
during test and fault codes 110 or 111 don't appear in
the odometer display then failure is not in the cluster.
Look for another possible cause of failure.
²If the pointer doesn't move during test, go to Step
(b).
²If fault code 110 is displayed in the odometer, go to
Step (b).
²If fault code 111 is displayed in the odometer then go
to Step (f).
²If fault codes 920 or 940 are displayed in the
odometer display refer to the fault code chart to identify
which module is causing the fault an repair module.
(b) Replace main cluster pc board. Go to Step (c).
(c) Connect cluster into instrument panel wiring
harness. Place it back into the proper position in the
instrument panel. Put in the top two mounting screws to
hold the cluster in place. DO NOT COMPLETELY
INSTALL CLUSTER TO INSTRUMENT PANEL UNTIL
UNIT IS CALIBRATED AND TESTED. Go to Step (d).
(d) use a scan tool to calibrate cluster and perform Self
Diagnostic Test. If OK, continue installation. If not OK,
go to Step (e).
(e) Replace subdial assembly and use a scan tool to
calibrate cluster. If not OK, look at another possible
cause for the tachometer failure.
(f) Use a scan tool to calibrate tachometer and perform
Self Diagnostic Test. If OK, stop. If not OK, go to Step
(b).
2. No rpm CCD Bus
Message or Zero rpm
CCD Bus Message from
Engine Controller.2. Check the PCM using a scan tool. Refer to the PCM
section of the manual to properly diagnose and repair.
NSINSTRUMENT PANEL AND SYSTEMS 8E - 7
DIAGNOSIS AND TESTING (Continued)