PCM - Harsh Downshift From 3-1/Hesitates/Lacks Power

Article No.
99-8-7

^ HARSH DOWNSHIFT - FROM 3RD-TO-1ST GEAR
WHILE STOPPING - VEHICLES WITH 4.0L OR 5.0L
ENGINE

^ HESITATION - AFTER ACCELERATION FROM
STOP - VEHICLES WITH 4.0L OR 5.0L ENGINE

^ LACK OF POWER - AFTER ACCELERATION FROM
STOP - VEHICLES WITH 4.OL OR 5.OL ENGINE

LIGHT TRUCK:
1997-1999 EXPLORER, MOUNTAINEER

CALIBRATION
7-54G-R13, 7-57B-R10, 7-57R-R10, 7-58B-R10, 7-58C-R11, 7-58R-R05, 7-58V-R11, 8-54G-R05, 8-54U-R05, 8-57B-R05, 8-57R-R05, 8-58B-R05, 8-58C-R10, 8-58R-R05, 8-58V-R10, 9-NEA-BAF

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
The vehicle may have one or all of the following symptoms:

^ After vehicle comes to almost a complete stop (approximately 5 km/h (3 mph)) and then accelerates, the transmission may still be in 3rd gear which may cause a perceived lack of power.

^ After vehicle comes to almost a complete stop (approximately 5 km/h (3 mph)), a harsh 3rd-to-1st gear downshift occurs.

^ After a long highway drive followed by a complete stop, a quick acceleration by the customer may result in a perceived lack of power.

^ Acceleration from a stop (city driving) may cause a hesitation.

These concerns may be caused by Powertrain Control Module (PCM) calibration strategy.

ACTION
Reprogram the PCM using New Generation Star (NGS) or Service Bay Diagnostic System (SBDS).





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.

OTHER APPLICABLE ARTICLES: NONE

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

OPERATION DESCRIPTION TIME

990807A Reprogram Powertrain 0.4 Hr.
Control Module (PCM)

DEALER CODING
CONDITION
BASIC PART NO. CODE
RECAL 42

OASIS CODES: 501000, 502000, 608500, 609500, 611500, 614500