Engine - Stall When Decelerating/Turning/No DTC's: Overview
Article No.98-22-3
11/09/98
STALL - DURING DECELERATION AND/OR TURNING
WITH NO DIAGNOSTIC TROUBLE CODES (DTCS)
STORED IN MEMORY
LINCOLN-MERCURY:
1996-97 TOWN CAR
This TSB article is being republished in its entirety to clarify the Powertrain Control Module calibration applications.
CALIBRATION
6-18E-R05-R11, 6-18J-R05-R11, 6-18Q-RO5-R11,
6-18S-R05-R11, 7-18E-R05-R11, 7-18J-R05-R11,
7-18Q-R05-R11, 7-1 8S-RO5-R11
WARNING
THIS MODIFICATION IS AUTHORIZED ONLY FOR THE LISTED ENGINE(S). PERFORMING THIS MODIFICATION ON OTHER ENGINE CALIBRATIONS IS UNAUTHORIZED AND COULD CREATE LIABILITY UNDER APPLICABLE FEDERAL OR LOCAL LAWS.
ISSUE
Some vehicles may stall when decelerating or turning with no Diagnostic Trouble Codes (DTCs) stored in continuous memory. This may be due to the Powertrain Control Module (PCM) strategy not being able to adjust quickly enough to sudden variations in the flow of fuel vapors from the evaporative emissions system.
ACTION
Perform the following Service Procedure. All diagnostic steps must be followed to ensure the integrity of the evaporative emissions system. Reprogramming the PCM will not correct the concern if the evaporative emissions system is not functioning correctly. The revised PCM strategy will adjust for the variations in purge flow on a properly functioning EVAP system.
Obtain an Authorized Modifications Decal (FPS 8262 obtainable through DOES II, 25/pkg) 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
F5VY-9D653-C Evaporative Emissions (EVAP)
Canister
F1AZ-9324-A Vapor Management Valve (VMV)
Vacuum Line
F5AZ-9C915-A Vapor Management Valve (VMV)
F6AZ-9C047-BA Vapor Control Valve (VCV)
F6VZ-9034-DA Fuel Filler Pipe
N808979-5191 Fuel Tank Strap Studs
OTHER APPLICABLE ARTICLES: NONE
SUPERSEDES: 98-9-7
WARRANTY STATUS: Eligible Under The Provisions Of Bumper To Bumper Warranty Coverage And Emissions Warranty Coverage
OPERATION DESCRIPTION TIME
982203A Inspect And Replace 0.4 Hr.
Evaporative Emission
System
982203B Remove, Inspect And 0.4 Hr.
Replace Evaporative
Emission Canister
982203C Inspect And Replace 0.2 Hr.
Vapor Management Valve
(VMV) And Vacuum Hose
982203D Remove Fuel Tank, 2.0 Hrs.
Replace Vapor Control
Valve (VCV) And Fuel
Filler Pipe (Includes Time
To Inspect Pump/Sender
Ground)
982203E Reprogram Powertrain 0.6 Hr.
Control Module (PCM)
DEALER CODING
CONDITION
BASIC PART NO. CODE
RECAL 42
OASIS CODES: 607000, 607400, 607700