Dakota 4WD V6-239 3.9L VIN X FI (1989)
Powertrain Control Module: Customer Interest
PCM - Cold Engine Driveway Stall Condition
SUBJECT:
Cold Engine Driveway Dieout Vehicles With 3.9L Engine & Manual Transmission
NO.: 18-34-90
GROUP:
DRIVEABILITY
DATE:
Dec. 31, 1990
MODELS:
1989 (
AB)
RAM VAN/WAGON (RWD)
(AD)
RAM PICKUP/RAM CAB & CHASSIS/RAMCHARGER
POWER RAM CAB & CHASSIS
(AN)
DAKOTA/DAKOTA SPORT/DAKOTA CONVERTIBLE
DAKOTA CAB & CHASSIS
SYMPTON/CONDITION:
Vehicle exhibits a cold engine start and stall (driveway dieout) condition. This condition is only noticeable when ambient temperatures are in the 50~F
to 70~F (10~C to 20~C) range.
DIAGNOSIS:
Using the DRB II tester and the 1989 Powertrain Diagnostic manual for 3.9/5.2/5.9L EFI (Publication # 81-699-9012), verify that all vehicle systems are
functioning as designed. Be sure to check minimum idle air flow and that EGR is not applied at idle. If all systems are functioning correctly, proceed
with the following repair.
PARTS REQUIRED:
1
Single Module Engine Controller (SMEC/SBEC)
1989 3.9L Engine with Manual Transmission
AN, Federal
PN 4638250
AN, California
PN 4638240
AB, Federal
PN 4638245
AB, California
PN 4638230
AD, Federal
PN 4638247
AD, California
PN 4638249
1
Authorized Modification Label
PN 4275086
REPAIR PROCEDURE:
This repair involves the replacement of the original engine controller with a revised unit.
1.
Replace the engine controller (SMEC/SBEC) with the appropriate unit as called out in PARTS REQUIRED.
Figure 1
