PCM - Hesitation/Surge At 35 to 45 MPH

Article No.
97-14-18

07/07/97

^ HESITATION - SURGE - 56-72 KM/H (35-45 MPH) IN
AMBIENT TEMPERATURES OF -18 TO 10
DEGREES (0-50 DEGREES F) - VEHICLES WITH
3.0L ENGINE

^ TRANSMISSION - DELAYED ENGAGEMENT FROM
REVERSE TO DRIVE - IN AMBIENT
TEMPERATURES OF -18 TO 10 DEGREES (0-50
DEGREES F&VEHICLES WITH 3.0L ENGINE

LIGHT TRUCK:
1997 AEROSTAR

CALIBRATION:
7-56J-R05, 7-56J-R10, 7-56T-R05, 7-56T-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:
Hesitation/surge may be present on some vehicles at speeds of 56-72 km/h (35-45 mph) in all ambient temperatures. A delayed cold transmission engagement from reverse to drive may also occur. This may be due to the Exhaust Gas Recirculation (EGR) calibration.





ACTION:
Reprogram the Powertrain Control Module (PCM). The new calibration should reduce the possibility of hesitation/surge and delayed engagement. Refer to the following PCM Application Chart for correct PCM calibrations.





Obtain an Authorized Modification 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

F79Z-12A650A0 Powertrain Control Module (PCM)
F79Z-12A650BD Powertrain Control Module (PCM)

OTHER APPLICABLE ARTICLES: NONE

WARRANTY STATUS: Eligible Under The Provisions Of Bumper To Bumper Warranty Coverage

OPERATION DESCRIPTION TIME

971418A Reprogram Powertrain 0.2 Hr.
Control Module (PCM)

971418B Replace Powertrain Control 0.6 Hr.
Module (PCM)

DEALER CODING
CONDITION
BASIC PART NO. CODE
RECAL 42

OASIS CODES: 611000, 611500, 612000, 612500, 612600