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Engine - Misfire/Buck/Jerk


87ford17

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
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