Mustang L4-140 2.3L Turbo VIN W FI (1984)
Engine Control Module: All Technical Service Bulletins
PCM - Driveline Clunk/Engine Speed Fluctuation
Article No. 84-24-7-S
NOISE - DRIVELINE CLUNK DURING TIP-IN AND TIP-OUT THROTTLE MOVEMENT - 2.3L EFI TURBO ENGINE SPEED - ERRATIC
DURING NEUTRAL "RUN-UP" - 2.3L EFI TURBO
FORD 1983 T-BIRD, 1984 MUSTANG, T-BIRD, MUSTANG SVO
LINCOLN-MERCURY 1984 CAPRI, COUGAR
This article supersedes Article 84-24-7 and is being republished to expand the symptom description and to correct the Engineering Vehicle Processor
part numbers.
If a customer report is received for any of the following symptoms, the cause may be the EEC IV processor. Verify the symptoms and then check the new
service processor number for correct application.
Symptom Descriptions
1.
Driveline clunk during tip-in and tip-out throttle movement.
2.
Engine speed fluctuation while trying to maintain engine rpm during a neutral "run-up" (speeds of approximately 2,000 to 2,500 rpm).
3.
Trailer hitching in a low gear light throttle cruise (i.e., such as driving in a parking lot).
NOTE:
Install processor and perform the EEC Quick Test, service as required.
Vehicle Processor
Replace With
E3ZF-12A650-AA Manual Trans. (Job 1)
E3PZ-12A650-G
E3PF-12A650-FA Manual Trans. - Cold Drive Fix
E3PZ-12A650-G
E4ZF-12A650-BA Manual Trans. Except SVO
E4PZ-12A650-A
E4ZF-12A650-EA Auto & Manual Trans. Except SVO
E4PZ-12A650-A
E4ZF-12A650-DA SVO Only
E4PZ-12A650-B
Authorized Modifications Decal
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
E3PZ-12A650-G
Processor
R
E4PZ-12A650-A
Processor
R
E4PZ-12A650-B
Processor
R
OTHER APPLICABLE ARTICLES: 84-24-7
WARRANTY STATUS: Reimbursable within the provisions of the Warranty and Policy Manual.
OPERATION: SP12A650A84
TIME:
Mustang/Capri - 0.9 Hr.
OPERATION: SP12A650A84