RAM 3500 Truck 4WD V8-5.9L VIN Z LDC (2000)
NOTE:
THE FOLLOWING EMISSION PACKAGES ARE NOT APPROVED AND ARE EXCLUDED FROM THIS BULLETIN. THE PCM
CALIBRATION OF ANY EXCLUDED VEHICLE IS NOT TO BE REPROGRAMMED FOR A SPARK KNOCK COMPLAINT. BEFORE
ATTEMPTING A REPROGRAMMING SESSION INSPECT THE TYPE OF VEHICLE AND ENGINE FOR POSSIBLE EXCLUSION.
SYMPTOM/CONDITION:
Some vehicle engines may exhibit a light-to-moderate spark knock condition during acceleration (under load).
DIAGNOSIS PROCEDURES:
1.
Using a Scan Tool (DRBIII(R) with the appropriate Diagnostic Procedures Manual, verify all engine systems are functioning as designed. If DTCs
are present, other than those listed above, record them on the repair order and repair as necessary before proceeding further with this bulletin.
2.
Verify that the following NOTES have been reviewed and completed as necessary.
3.
Verify that the engine coolant contains a quality antifreeze. The coolant mixture should consist of 44% to 68% antifreeze.
4.
If the only condition experienced is the light-to-moderate engine spark knock, then perform the Repair Procedure.
NOTE:
WHEN PULLING A HEAVY LOAD OR DRIVING A FULLY LOADED VEHICLE USE A PREMIUM UNLEADED FUEL TO HELP
MINIMIZE SPARK KNOCK.
NOTE:
WHENEVER A POWERTRAIN CONTROL MODULE IS REPLACED DUE TO FAILURE, THE SOFTWARE OF THE REPLACEMENT
CONTROLLER MUST BE VERIFIED FOR THE LATEST REVISION LEVEL. USE THE FLASH PROCEDURE TO UPDATE REPLACED
CONTROLLERS AS NECESSARY.
PARTS REQUIRED:
EQUIPMENT REQUIRED:
REPAIR PROCEDURE:
1.
Connect a battery charger and set as close to a 14 volts charge as possible.
2.
Flash the PCM using the TechCONNECT/MDS2 and DRBIII(R).
