Jeep 1997 Grand Cherokee Service Manual page 366

8D - 24 IGNITION SYSTEM
SPECIFICATIONS (Continued)
SPARK PLUGS
ENGINE
PLUG TYPE
4.0L 6-CYL. RC12LYC
5.2L V-8 RC12LC4
5.9L V-8 RC12YC
IGNITION COIL RESISTANCE
COIL
Primary Resistance
Secondary Resistance at 70° - 80°F
ELECTRODE GAP
0.89 mm (.035 in.)
1.01 mm (.040 in.)
0.89 mm (.035 in.)
TOYODENSO
.95 - 1.20 Ohms
11,300 - 13,300 Ohms
SPARK PLUG CABLE RESISTANCE
MINIMUM
250 Ohms Per Inch
3000 Ohms Per Foot
MAXIMUM
1000 Ohms Per Inch
12,000 Ohms Per Foot
DIAMOND
.96 - 1.18 Ohms
11,300 - 15,300 Ohms
ZG