Engine - Rough Idle/Hesitation/Stumble On Acceleration

Article No.
94-16-5

^ HESITATION - STUMBLE - DURING ACCELERATION - VEHICLES WITH 3.8L ENGINES

^ IDLE - ROUGH AT ALL AMBIENT TEMPERATURES

FORD:
1994 THUNDERBIRD

LINCOLN-MERCURY:
1994 COUGAR

CALIBRATION:
4-16F-R00, 4-16T-R00

ISSUE:
Some vehicles may exhibit a rough idle and/or a hesitation/stumble on acceleration. This may be caused by poor fuel quality.

ACTION:
Replace the Powertrain Control Module (PCM) with a new calibration PCM which allows for poor fuel quality. Use the following procedure to determine if a new PCM with a revised operating strategy is required.

1. Perform the diagnostic procedure in the 1994 Powertrain Control/Emissions Diagnosis Service Manual. Service as required.





2. If the concern still exists, install a new PCM. Refer to the application chart.





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

F4SZ-122A650-BB Powertrain Control Module A
(PCM)
F4SZ-12A650-CB Powertrain Control Module W
(PCM)

OTHER APPLICABLE ARTICLES: NONE
WARRANTY STATUS:
Eligible Under The Provisions Of Bumper To Bumper Warranty Coverage

OPERATION DESCRIPTION TIME
941605A Perform Diagnostic 0.9 Hr.
Procedure And Replace PCM

DEALER CODING
BASIC PART NO. CONDITION CODE
RECAL 08

OASIS CODES: 608400, 610700, 611000, 611500