Engine - Rough Idle After Cold Soak Start Up
Article No.96-3-9
01/29/96
^ IDLE - ROUGH - RIGHT AFTER START-UP AFTER COLD SOAK (OVERNIGHT) - VEHICLES BUILT THROUGH 8/8/95
^ STALL - RIGHT AFTER START-UP AFTER COLD SOAK (OVERNIGHT) - VEHICLES BUILT THROUGH 8/8/95
LINCOLN-MERCURY:
1995 TOWN CAR
This TSB article is being republished in its entirety to provide information on Powertrain Control Module (PCM) replacement for Service Bay Diagnostic System (SBDS) dealers.
CALIBRATION:
5-18J-R00, 5-18J-R10, 5-18J-R13, 5-18E-R00, 5-18E-R10, 5-18E-R13, 5-18Q-R00, 5-18Q-R10, 5-18S-R00, 5-18S-R10
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 rough idle or stall approximately 5 seconds after a cold engine start. This condition will usually occur after an overnight soak. This may be due to a lean calibration within the PCM.
ACTION:
Reprogram or replace the PCM. A richer calibration has been incorporated in the PCM to reduce the possibility of a lean condition during cold start. Dealers with SBDS are required to reprogram the PCM with the appropriate calibration per the Application Chart using the latest calibration update CD-ROM. Only non-SBDS dealers are permitted to replace the PCM. Refer to the Application Chart for correct calibration or part number.
NOTE:
DEALERS WITH SBDS ARE REQUIRED TO OBTAIN REGIONAL APPROVAL WHEN IT IS NECESSARY TO REPLACE THE PCM.
Obtain an Authorized Modifications Decal and list the date, dealer number, and summary of modifications 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
F5PZ-12A650-DA Powertrain control Module (PCM)
F5PZ-12A650-EA Powertrain Control Module (PCM)
F5PZ-12A650-FA Powertrain Control Module (PCM)
F5Pz-12A650-GA Powertrain Control Module (PCM)
OTHER APPLICABLE ARTICLES: NONE
SUPERSEDES: 95-21-3, 95-10-23
WARRANTY STATUS: Eligible Under The Provisions Of Bumper To Bumper Warranty Coverage
OPERATION DESCRIPTION TIME
960309A Reprogram Powertrain 0.2 Hr.
Control Module (PCM)
960309B Replace Powertrain Control 0.3 Hr.
Module (PCM)
DEALER CODING
CONDITION
BASIC PART NO. CODE
RECAL 08
OASIS CODES: 602300, 607000, 607400, 608000, 608400