Thunderbird V8-281 4.6L SOHC (1994)
Shift Solenoid: Customer Interest
A/T - AODE Intermittent Loss of Torque at 3-4 Upshift
Article No.
95-5-15
03/13/95
TRANSMISSION - AODE/4R7OW - INTERMITTENT LOSS OF TORQUE DURING OR JUST AFTER 3-4 UPSHIFT - MAY BE
INTERMITTENT
FORD:
1992-95 CROWN VICTORIA
1994-95 MUSTANG, THUNDERBIRD
LINCOLN-MERCURY:
1992-95 GRAND MARQUIS, TOWN CAR
1993-95 MARK VIII
1994-95 COUGAR
LIGHT TRUCK:
1994-95 E-150, F-15O
ISSUE:
There may be an intermittent loss of torque during or just after the 3-4 upshift or in 4th gear on some vehicles. Other gears and shifts are normal. The
vehicle may lose power and have engine RPM increase. Normal operation may occur after:
^
The driver pushed the transmission control switch (TCS).
^
The driver moved the shift lever to manual 2nd.
^
The vehicle has coasted to the 4-3 downshift speed.
This may be caused by a hydraulic condition in the transmission or an intermittent signal from one of the powertrain system sensors.
ACTION:
Refer to the following Diagnostic Procedure to determine the correct action for service.
DIAGNOSTIC PROCEDURE
Obtain detailed information about the concern's symptoms from the customer. Under what operating conditions does the concern happen? Is the
transmission hot or cold? In what gear or gears does it happen? Does it happen most of the time, some of the time or hardly ever?
Preliminary Checkout Routine
^
Check transmission fluid level and note condition.
^
Check shift linkage adjustment in overdrive.
^
Check for non-factory installed items and verify proper installation.
^
Check line pressure.
^
Perform "Quick Test" both KOEO and KOER.
^
Record and repair all diagnostic trouble codes.
^
Check vehicle wiring for intermittent or open circuits, connectors for proper engagement, damage, corrosion, bent pins and missing or damaged
seals.
^
Perform Pinpoint Tests A, D and F in Section 07-01 of the Service Manual and service as required.
Road Test Procedure
