TSB 18-48-98
Ignition System Cross Fire/Secondary Ignition Wire Induction
Date: December 30, 1998
Models: 1994-1999 BR/BE Ram
Note: applies to vehicles with 3.9L, 5.2L and 5.9L engines (gas)
1994 – 1999 (AN) Dakota
1994 – 1999 (BR/BE) Ram Truck
1998 – 1999 (DN) Durango
1995 – 1999 (XJ) Cherokee
1994 – 1999 (ZJ) Grand Cherokee
Symptoms: some vehicles may exhibit one or more of these symptoms:
- spark knock complaints with vehicle under load
- various single cylinder misfire (1, 3, 7,) ad especially 5 and/or 8
- surge in 4th gear with the Electronically Modulated Converter Clutch (EMCC) engaged (around 45MPH).
- Perceived torque converter EMCC engagement/ disengagement around 45 MPH.
Diagnosis:
Using the Mopar Diagnostic System (MDS/MDS2) or the Diagnostic Scan Tool (DRB III), verify that all engine/transmission systems are functioning as designed. If other DTC’s are present, repair as necessary before proceeding with this bulletin. If no other DTC’s are present and the above symptoms have been reported by the customer, perform the repair procedure.
NOTE: This rerouting procedure should be performed before any other misfire, surge, or spark knock repairs are attempted.
Parts:
3 56028186 Clip, single wire
2 06503441 Clip, wire to hose (5.2L, 5.9L)
1 04364375 Convolute, 10 ft roll
Repair:
The repair procedure involves rerouting the coil wires and/or the plug wires to minimize induction effects.
For respective repair instructions, see the V6 version (100KB, 2 Figures) or the V8 version (400KB 10 Figures). NOTE The V8 version is a very large file.
The full TSB which includes both sets of repair instructions is also available. 12 Fig – Total load is 500 KB.