F 250 2WD Pickup V8-7.3L DSL (1990)
Glow Plug Control Module: Customer Interest
Engine - Hard Starting/Long Cranking Time
Article No. 90-26-11
HARD STARTING - 7.3L DIESEL ENGINE - LONG CRANKING TIME
LIGHT TRUCK:
1988-90 E-250, E-350, F SUPER DUTY, F-250, F-350
This TSB article is being republished in its entirety to correct the procedure listed in method # 2. The ignition must be in the "ON" position.
ISSUE:
Hard starting and long cranking time of more than five (5) seconds may occur if the "WAIT TO START" light turns off too early. This may
be caused by the strategy of the electronic glow plug control module or by the resistor bar on the electronic glow plug control module.
ACTION:
Install a resistor bar kit (E9TZ-12B602-A) on the electronic glow plug control module or replace the glow plug control module
(FOTZ-12B533-A). Refer to the following procedure for service details.
Figure 1
32 DEGREES F AND BELOW
For trucks built before 11/89 only, install a resistor bar kit (E9TZ-12B602-A) on the electronic glow plug control module, Figure 1.
NOTE:
TRUCKS BUILT FROM 11/89 THROUGH THE END OF THE 1990 MODEL YEAR ALREADY HAVE THIS RESISTOR BAR
INSTALLED.
This resistor bar kit causes an increase in the glow plug temperature before the "WAIT TO START" light turning off.
32 DEGREES F AND ABOVE
For trucks built before the 1991 model year, replace the electronic glow plug control module (FOTZ-12B533-A), Figure 1. This module is located
behind the Crankcase Depression Regulator held on with two (2) bolts.
NOTE:
THE 1991 MODELS ALREADY HAVE THIS MODULE INSTALLED.
This module increases the "ON" time of the "WAIT TO START" light.
ALTERNATIVE ACTION TO INSTALLING ELECTRONIC GLOW PLUG CONTROL MODULE
An alternative action to installing the module is described below. This alternative requires a modification to the starting instructions outlined in the
Owner's Guide, 7.3L Diesel Supplement.
32 DEGREES F AND ABOVE
For trucks built before 11/89, install the resistor bar kit (E9TZ-12B602-A).
For all affected 1988-90 trucks, disregard the "WAIT TO START" on the dash and use any of the following methods during starting.
Method # 1
^
Insert key
