Grand Caravan FWD V6-181 3.0L SOHC (1993)
PROM - Programmable Read Only Memory: All Technical Service Bulletins
PCM - Deceleration Shudder At Low Engine Speed
NO.: 18-17-93
GROUP: Driveability
EFFECTIVE DATE: Jan. 24, 1994
SUBJECT:
Decel Shudder at Low Engine Speed
MODELS:
1992 - 1993
(AA) Acclaim/Spirit/LeBaron Sedan
(AC) Dynasty/New Yorker/New Yorker Salon
(AG) Daytona
(AJ) LeBaron Coupe/LeBaron Convertible
(AP) Sundance/Shadow
(AS) Caravan/Voyager/Town & Country
NOTE:
THIS BULLETIN APPLIES TO VEHICLES EQUIPPED WITH 3.OL ENGINE.
SYMPTOM/CONDITION:
In gear closed throttle decel vibrations or shudder between 40 and 25 MPH (The actual speed range will depend on the vehicles final drive gear ratio).
DIAGNOSIS:
Using the Mopar Diagnostic System or the Scan Tool (DRB II) with appropriate diagnostic procedure manual, verify that all engine systems are
functioning as designed. If Diagnostic Trouble Codes (DTC's) 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 procedure applies to 1992 & 1993 California and 1993 Federal emissions vehicles.
The 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.
