Electronic Control Assembly - Hesitation on Driveaway

84ford7

Article No. 84-17-15-S

HESITATION DURING DRIVEAWAY - 3.8L - HIGH AMBIENT COLD STARTS AND STABILIZED ENGINE CONDITIONS


FORD 1984 LTD, T-BIRD W/3.8L ENGINES

LINCOLN-MERCURY 1984 MARQUIS, COUGAR W/3.8L ENGINES

This article is being re-published to provide corrected part numbers in the charts shown.

Driveaway hesitations during high ambient (+ 70~F) cold starts and during drives with stabilized engine temperatures can be improved by installing a new Electronic Control Assembly (ECA).

1. Perform EEC IV self-test and service as indicated by test.
2. New units should be driven 1500 miles before services are attempted.
3. If concern is still evident, install new ECA(12A650) as shown below:

Original Processor Replace With Application
E4VF-12A650-CA E5VZ-12A650-CB 49 State AOD
E4VF-12A650-DA E5VZ-12A650-DB California AOD
E4VF-12A650-EA E53Z-12A650-ALA 49 State C5
E4VF-12A650-FA E53Z-12A650-AMA California C5



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

E5VZ-12A650-CB Electronic Control Assembly R
E5VZ-12A650-DB Electronic Control Assembly W
E53Z-12A650-ALA Electronic Control Assembly R
E53Z-12A650-AMA Electronic Control Assembly R


OTHER APPLICABLE ARTICLES: 84-17-15
WARRANTY STATUS: Reimbursable within the provisions of the Warranty and Policy Manual.
OPERATION: Self Test - 12650D
TIME: 0.6 Hr.

OPERATION: ECA Replace - 12650D6
TIME: 0.3 Hr.

OPERATION: Retest - 12650DS1
TIME: 0.2 Hr. DLR. CODING: Basic Part No. 12A650 Code: 09