Lebaron Coupe L4-135 2.2L SOHC Turbo VIN A FI (1989)
Powertrain Control Module: All Technical Service Bulletins
ECM - Spark Knock During Hot Engine Idle In DRIVE
Models
1989-1990 AH, AK, AL, AP, Bodies
Subject
Spark Knock at Idle in DRIVE - 2.2L EFI Engine With Automatic Transmission
Index
DRIVEABILITY
Date
July 16, 1990
No.
18-22-90
(C18-11-0)
P-2123
BODY CODE LEGEND
AH - LANCER/LEBARON GTS AK - RELIANT/ARIES AL - OMNI/HORIZON AP - SHADOW/SUNDANCE
SYMPTOM/CONDITION
Vehicle may exhibit audible spark knock with engine at idle and transmission in DRIVE when accessory loads are applied.
DIAGNOSIS
This audible spark knock ("pinging" sound) will most likely occur when ambient temperatures are near 80~F (26~C) during a hot engine idle condition
when the transmission is in the DRIVE position, and accessories such as air conditioning or power steering are in use.
Before proceeding to the repair procedure, verify the system is functioning as designed using the appropriate diagnostic test procedures. Be sure to check
for proper basic timing set and correct engine coolant level.
PARTS REQUIRED
1
Engine Controller for 2.2L EFI Engines
1989 Federal, Automatic
PN 4557518
1989 California, Automatic
PN 4557520
1990 Federal, Automatic
PN 4557514
1
Authorized Modification Label
PN 4275086
REPAIR PROCEDURE
This repair involves the replacement of the original engine controller with a revised unit.
1.
Replace engine controller (SMEC/SBEC) with appropriate unit as called out in PARTS REQUIRED.
