Engine - Hesitation/Stumble After Cold Start
Article No.94-19-5
09/21/94
^ HESITATION - AFTER COLD START DURING FIRST TWO MILES (4 KM) OF DRIVING - 3.0L ENGINES
^ STUMBLE - AFTER COLD START DURING FIRST TWO MILES (4 KM) OF DRIVING - 3.0L ENGINES
FORD:
1990 TAURUS
LINCOLN-MERCURY:
1990 SABLE
CALIBRATION:
8-10A-R00
WARNING:
THIS MODIFICATION IS AUTHORIZED ONLY FOR THE LISTED ENGINE. PERFORMING THIS MODIFICATION ON OTHER ENGINE CALIBRATIONS IS UNAUTHORIZED AND COULD CREATE LIABILITY UNDER APPLICABLE FEDERAL OR LOCAL LAWS.
ISSUE:
Some vehicles may experience a hesitation or stumble during the first two miles (4 km) of driving after an initial cold start at ambient temperatures of 50~F (10~C) or below. This may be caused by the operating strategy of the Powertrain Control Module (PCM).
ACTION:
Refer to the following service procedure to determine if a new PCM with a revised operating strategy is required.
SERVICE PROCEDURE
1. Perform diagnostic procedure in the 1990 Engine/Emissions Diagnosis Service Manual. Service as required.
2. If the concern still exists, replace the PCM with a new PCM which has a revised operating strategy.
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.
NOTE:
DEALERS SHOULD REFER TO THE INSTRUCTION SHEET INCLUDED IN THE PACKAGE TO IMMEDIATELY RETURN THE CORE TO FORD ELECTRONICS VIA FEDERAL EXPRESS AWB/SHIPPER ENCLOSED.
FOR VEHICLES REPAIRED UNDER WARRANTY, DEALERS ARE INSTRUCTED TO RETURN THE CORES IMMEDIATELY ONCE THE BLUE FPS-700 TAG IS RECEIVED.
PART NUMBER PART NAME CLASS
FOPZ-12A650-AMA Powertrain Control Module V
(PCM)
OTHER APPLICABLE ARTICLES: NONE
WARRANTY STATUS: Eligible Under Emissions Warranty Coverage
OPERATION DESCRIPTION TIME
941905A Diagnose And Replace PCM 0.6 Hr.
DEALER CODING
BASIC PART NO. CONDITION CODE
12A650 08
OASIS CODES: 611000, 611500