Monaco V6-182 3.0L SOHC (1990)
Engine Control Module: Customer Interest
ECU - Spark Knock/Stall/Surge
SUBJECT: Spark Knock/Start and Stall/Engine Surge
NO.: 18-03-91
GROUP: DRIVEABILITY
DATE: Apr. 8, 1991
MODELS:
1990-91 (BB) MONACO
NOTE: THIS BULLETIN APPLIES ONLY TO (BB) VEHICLES WITH V.I.N. PRIOR TO MH800000.
SYMPTOM/CONDITION:
Vehicle may exhibit sustained engine spark knock with medium throttle application, cold engine driveway dieout after an overnight cold soak, and/or an
engine surge condition during a light load/light throttle situation (i.e. when speed control is activated).
DIAGNOSIS:
Using a DRB II tester and the appropriate diagnostic procedure manual, verify that all vehicle engine systems are functioning as designed (no fault codes
are present). If all systems are functioning correctly, proceed with the following repair.
PARTS REQUIRED:
1
Electronic Control Unit (ECU)
4605097
1
Authorized Modification Label
4275086
REPAIR PROCEDURE:
This repair involves replacement of the original engine controller (ECU) with a revised one.
1.
Turn the ignition switch to the OFF position and disconnect the battery.
2.
Replace the engine controller with the unit as called out in PARTS REQUIRED.
3.
Reconnect the vehicle battery.
Figure 1
4.
Type the required information on the Authorized Modification Label, as illustrated in Figure 1, and attach near the VECI label.
POLICY: Reimbursable within the provisions of the warranty.
