Shadow V6-181 3.0L SOHC VIN 3 FI (1993)
Powertrain Control Module: Customer Interest
PCM - Rough Engine Idle After Cold Start
NO: 18-08-94
GROUP: Vehicle Performance
DATE: Jun. 24, 1994
1994 MODEL EFFECTIVE DATE: Jul. 15, 1994
SUBJECT:
Idle Roughness After Cold Start
THIS BULLETIN SUPERSEDES, IN PART, TECHNICAL SERVICE BULLETIN NO. 09-06-93 DATED MAY 14, 1993. THE DRIVEABILITY
INFORMATION FROM 09-06-93 IS INCLUDED WITH THIS BULLETIN TO PROVIDE A SINGLE SOURCE FOR 2.2L & 2.5L ENGINE COLD
PERFORMANCE INFORMATION.
MODELS:
1992 -
1993
(AA)
Acclaim/Spirit/LeBaron Sedan
1992 -
1993
(AC)
Dynasty
1992 -
1993
(AG)
Daytona
1992 -
1993
(AJ)
LeBaron Coupe/LeBaron Convertible
1992 -
1994
(AP)
Sundance/Shadow/Shadow Convertible
1992 -
1993
(AS)
Caravan/Voyager
NOTE:
THIS BULLETIN APPLIES TO 1992 & 1993 VEHICLES EQUIPPED WITH THE 2.5L ENGINE, ALSO 1992, 1993 AND 1994 VEHICLES
EQUIPPED WITH THE 2.2L ENGINE.
SYMPTOM/CONDITION:
Cold idle roughness (condition worse if engine speed is increased in neutral) and poor driveability, after a cold start, in 0 to 30 degree fahrenheit
temperatures. Condition lasts until the engine coolant temperature reaches approximately 50 to 60 degrees fahrenheit.
DIAGNOSIS:
Using the Mopar Diagnostic System (MDS) or the Scan Tool (DRBII or III) with the appropriate Diagnostic Procedure Manual, verify that all
engine/transmission 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 repair.