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8I - 6
IGNITION CONTROL
KNOCK SENSOR (Continued)
(4) Remove the knock sensor (Fig. 10).
Fig. 10 KNOCK SENSOR LOCATION
INSTALLATION
(1) Install knock sensor. Tighten knock sensor to
10 N·m (88.5 in. lbs.) torque. Over or under tight-
ening effects knock sensor performance, possi-
bly causing improper spark control.
(2) Route the knock sensor wire in the proper loca-
tion (Fig. 11).
Fig. 11 KNOCK SENSOR WIRE ROUTE
(3) Install the upper intake manifold, (Refer to 9 -
ENGINE/MANIFOLDS/INTAKE
INSTALLATION).
(4) Connect the electrical connector (Fig. 12).
Fig. 12 KNOCK SENSOR CONNECTOR
(5) Connect the negative battery cable.
SPARK PLUG
DESCRIPTION - PLATINUM PLUGS
The V6 engines use platinum resistor spark plugs.
They have resistance values of 6,000 to 20,000 ohms
when checked with at least a 1000 volt tester. For
spark plug identification and specifications, Refer to
the Specifications section.
Do not use an ohm meter to check the resis-
tance of the spark plugs. This will give an inac-
curate reading.
When the spark plugs use a single or double plat-
inum tips and they have a recommended service life
of 100,000 miles for normal driving conditions per
schedule A in this manual. The spark plugs have a
recommended service life of 75,000 miles for severe
driving conditions per schedule B in this manual. A
thin platinum pad is welded to both or just the cen-
ter electrode end(s) as shown in (Fig. 13). Extreme
care must be used to prevent spark plug cross
threading, mis-gapping (Fig. 14) and ceramic insula-
tor damage during plug removal and installation.
CS
MANIFOLD
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