F 350 4WD Pickup V8-7.3L DSL Turbo VIN F (1994)
PROM - Programmable Read Only Memory: All Technical Service Bulletins
Engine - Hard Start, Rough Idle, Misfire, Stalls
Article No.
03-21-10
10/06/03
HARD OR NO START - HESITATION - IDLE ROUGH -
LOW POWER - MISSES - STALLS - 7.3L DI TURBO -
1994-95 CALIBRATION
FORD:
1994-1995 F SUPER DUTY, F-250, F-350 1995 E-350
Article 96-3-18 is being republished in its entirety as part of a consolidated 7.3L diagnostic aid booklet.
NOTE
THIS MODIFICATION IS AUTHORIZED ONLY FOR THE LISTED ENGINE CALIBRATIONS.
ISSUE
Some 1994 and 1995 7.3L DI Turbo Diesels may have diagnostic difficulties or rough idle and performance concerns. These difficulties or concerns
relate to:
^
Hard or no start
^
Stalls
^
Hesitation
^
Misses
^
Low power
This is due to the limited diagnostics of the 1994-1995 calibration and the diagnostic procedures.
ACTION
For concern vehicles only, reprogram the Powertrain Control Module (PCM) to 1996 level calibration to provide improved diagnostic capability and
performance. Refer to the following Service Procedure for details.
NOTE
DO NOT REPROGRAM EITHER 1994 SELECTABLE RPM CONTROL VEHICLES OR RYDER, INC. UNIQUE CALIBRATION VEHICLES.
USE THE SUPER STAR II TESTER, OR NGS (SELF-TEST FUNCTIONS ONLY), TO DIAGNOSE THESE VEHICLES.
Updating the calibration will allow the use of New Generation Star (NGS) tester and/or WDS and improved diagnostic procedures in diagnosing the
vehicle. This will also slightly improve idle quality and performance.
SERVICE PROCEDURE
1.
Before servicing the vehicle, check for an Authorized Modifications Decal (FPS 8262) on the fan shroud. Vehicles which have already been
reprogrammed should display a decal.
2.
Connect the WDS or NGS to the vehicle.
3.
Reprogram the 1994 and 1995 Electronic Engine Control (EEC) module to the latest level. Follow the directions and displays on the WDS or NGS
screens.
