Engine Misfire Buck Jerk: 1986 Bronco II 2WD V6-177 29L Powertrain TSB 871619
Fuel Injector: All Technical Service Bulletins
Engine - Misfire/Buck/Jerk
Article No.
^ ENGINE MISS - 2.9L EFI - UNDER LOAD
87-16-19
AT HIGHWAY SPEEDS
^
BUCK/JERK - 2.9L EFI - UNDER LOAD AT HIGHWAY SPEEDS
LIGHT TRUCK:
1986 RANGER, BRONCO II
WARNING:
This modification is authorized only for the listed engines. Performing this modification on other engine calibrations is unauthorized and
could create liability under applicable federal or local laws.
ISSUE:
An engine misfire and/or buck/jerk while under road load and/or during tipin acceleration at speeds of 65 mph (105 km/h) may be caused by
the strategy of the EEC IV processor. The strategy fault may cause the number two (2) injector bank (right side) to operate incorrectly.
Self-test code "11" will be displayed during diagnosis indicating the system is okay.
ACTION:
To correct this, install a new level EEC IV processor. Refer to the EEC IV processor application chart that follows for the current service
part application.
EEC IV PROCESSOR APPLICATION CHART
Existing EEC IV Processor
Replace with New Level
To Be Removed
EEC IV Processor
(Engineering Part Number)
(Service Part Number)
E6TF-12A650-EA
E6PZ-12A650-AA
E6TF-12A650-PA
E6PZ-12A650-CA
E6TF-12A650-FA
E6PZ-12A650-BA
E6TF-12A650-LC
E6PZ-12A650-EA
E6TF-12A650-CD
E6PZ-12A650-DA
E6TF-12A650-MC
E6PZ-12A650-FA
Obtain an Authorized Modifications Decal and list the date, dealer number, and summary of alterations performed. Select a prominent place adjacent to
the Vehicle Emission Control Information Decal suitable for installing the Authorized Modifications Decal. Clean the area, install the decal, and cover it
with a clear plastic decal shield.
PART NUMBER
PART NAME
CLASS
E6PZ-12A650-AA
EEC IV Processor
B
E6PZ-12A650-BA
EEC IV Processor
B
E6PZ-12A650-CA
EEC IV Processor
B
E6PZ-12A650-DA
EEC IV Processor
B
E6PZ-12A650-EA
EEC IV Processor
B
E6PZ-12A650-FA
EEC IV Processor
B
OTHER APPLICABLE ARTICLES: None
WARRANTY STATUS: Reimbursable within the provisions of the Warranty and Policy Manual
OPERATION: SP871619A
TIME:
1.3 Hrs. DLR. CODING: Basic Part No. DRIVE - Code: M4
