Ranger 2WD L4-153 2.5L SOHC VIN C SFI (1998)
PROM - Programmable Read Only Memory: Customer Interest
Engine - High Idle/MIL ON/DTC P0320 Set
Article No.
98-26-8
01/04/99
^
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
LIGHT TRUCK:
1998-99 RANGER
CALIBRATION
8-49A-R08, 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
OPERATION
DESCRIPTION
TIME
982608A
Reprogram Powertrain
0.6 Hr.