Seville V8-300 4.9L (1991)
Throttle Position Sensor: All Technical Service Bulletins
Engine - Stalls Cold/Coasting/Hesitation/DTC's Set
Bulletin No.:
T-93-44
File in Group:
6E
Number:
106
Corp.Ref.No.:
016540R
Date:
Jan. 1993
SUBJECT:
INTERMITTENT STALL AFTER START COLD; ENGINE STALLING ON COAST DOWN; HESITATION COLD; OR ECM CODES E22, E26,
E32, E55, E70, AND/OR E85
MODELS AFFECTED:
1990-1992 DE VILLES, FLEETWOODS, ELDORADOS, AND SEVILLES
This bulletin has been revised to update the repair procedures and warranty statement. This bulletin replaces T-92-87, Group 6E, which should be
discarded.
Some 1990-1992 DeVilles, Fleetwoods, Eldorados, and Sevilles may experience an intermittent stall after start cold, stall on coast down with an
immediate restart, or cold engine hesitation. This condition may be accompanied by an ECM code E22, E26, E32, E55, E70, or E85. This be caused by
an erratic signal from the Throttle Position Sensor (TPS), a poor ground connection near the starter, and/or PCM PROM calibration.
To repair this condition use the following procedure:
1.
For 1990-1991 vehicles only, visually inspect the TPS. If the TPS is the old style, replace it with P/N 17112609 (Figure 1). Refer to Section
6E-C2 of the appropriate Service Information Manual for correct replacement and adjustment procedures.
