Article No. 98-26-8

• IDLE—HIGH IDLE SPEED (1300-2000 RPM) DURING
CLOSED THROTTLE DECELERATION WITH THE
TRANSMISSION IN NEUTRAL OR WITH THE
CLUTCH DEPRESSED
• MALFUNCTION INDICATOR LAMP (MIL)—MIL
ILLUMINATED WITH DIAGNOSTIC TROUBLE CODE
(DTC) P0320 STORED IN MEMORY
• LAMP—MALFUNCTION INDICATOR LAMP (MIL)
ILLUMINATED WITH DIAGNOSTIC TROUBLE CODE
(DTC) P0320 STORED IN MEMORY

FORD: 1998-1999 RANGER

CALIBRATION
8-49A-R06, 8-49B-R10, 8-49S-R10, 8-49T-R06,
9B1M-AA-A, 9B1M-AB-A, 9B1M-AC-A, 9B1M-BA-B,
9B1M-BB-B

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 Malfunction Indicator Lamp (MIL) may
illuminate and Diagnostic Trouble Code (DTC)
P0320 may be stored in memory on some vehicles.
There may also be a high idle rpm (1300-2000) on
closed throttle deceleration in Neutral or clutch
depressed. This may be caused by the Powertrain
Control Module (PCM) calibration.

ACTION
Reprogram the PCM to latest calibration level. This
more robust calibration reduces deceleration air flow
and reduces the possibility of high rpm with high
limit hardware. In addition, the calibration error is
fixed to reduce the possibility of unique driver action
causing a false P0320 MIL code.
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
And Emissions Warranty Coverage