F 150 2WD Pickup V8-5.4L SOHC VIN 3 (1999)
PROM - Programmable Read Only Memory: Customer Interest
A/T - 4R70W 4-3 Coastdown Clunk Noise On Deceleration
Article No.
99-12-4
06/14/99
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NOISE - "CLUNKING" HEARD DURING 4-3
COASTDOWN WHILE DECELERATING FROM 48-32
KM/H (30-20 MPH) - VEHICLES WITH 5.4L ENGINE
AND 4R70W TRANSMISSION
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TRANSMISSION - 4R7OW - 4-3 COASTDOWN "CLUNK" WHILE DECELERATING FROM 48-32 KM/H (30-20 MPH) - VEHICLES WITH
5.4L ENGINE
LIGHT TRUCK:
1999 F-150
CALIBRATION
9VZA-AC CALIBRATION, 9VZA-AD CALIBRATION
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
A 4-3 coastdown "clunk" when decelerating from 48-32 km/h (30-20 mph) may occur on some vehicles. This may be caused by the Powertrain Control
Module (PCM) calibration.
ACTION
Follow normal diagnostic procedures per the 1999 F-150 Workshop Manual and reprogram the PCM.
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
991204A
Reprogram Powertrain
0.4 Hr.
Control Module (PCM)
DEALER CODING
CONDITION
BASIC PART NO.
CODE
