Grand Caravan AWD V6-201 3.3L (1992)
PROM - Programmable Read Only Memory: All Technical Service Bulletins
PCM - Cold Engine Knock
NO.: 09-13-93
GROUP: Engine
DATE: Oct. 22, 1993
SUBJECT:
3.3L and 3.8L Cold Engine Knock
MODELS:
1992 - 1993
(AC) Dynasty/New Yorker/New Yorker Salon
(AS) Caravan/Grand Caravan/Caravan C/V
Voyager/Grand Voyager/Town & Country
(AY) Imperial/New Yorker Fifth Avenue
NOTE:
THIS BULLETIN APPLIES TO VEHICLES EQUIPPED WITH 3.3L OR 3.8L ENGINE AND THE 41TE TRANSAXLE.
NOTE:
IF TECHNICAL SERVICE BULLETIN NO. 18-12-93 HAS BEEN APPLIED TO THE VEHICLE, THE REPAIR FOR COLD ENGINE KNOCK IS
ALREADY INSTALLED.
SYMPTOM/CONDITION:
Light engine knocking noise during light acceleration or neutral rev.-up following a cold start up. Condition more prevalent in lower ambient
temperatures and after a 5 to 6 hour soak.
DIAGNOSIS:
Using the Scan Tool (DRB II) and appropriate diagnostic procedure manual or the Mopar Diagnostic System, verify that all vehicle engine systems are
functioning as designed. If Trouble Codes (Diagnostic Trouble Codes) are present, record them on the repair order for future reference, and repair as
necessary. If no codes are present and all systems are functioning correctly, proceed with the following repair.
PCM (Powertrain Control Module) RE-PROGRAMMING
This repair involves selectively erasing and programming the Powertrain Control Module with new software (calibrations).
EQUIPMENT/PARTS REQUIRED:
MULTI-PART NUMBER FLASH RE-PROGRAMMING INSTRUCTIONS
1.
Insert the Flash Programming Cartridge into the DRB-II.
2.
Connect the DRB-II to the Flash Programming Adapter.
3.
Connect the Flash Programming Adapter to the Engine 6-Way Cable.
4.
Connect the Engine 6-Way Cable to the Engine Diagnostic Connector.
