W 250 Pickup V8-318 5.2L (1986)
Torque Converter: All Technical Service Bulletins
A/T - Reverse Shake During Breakaway
Models
1986 Rear Wheel Drive Passenger Cars & Trucks With Automatic Transmission
Subject
Reverse Shake
Index
TRANSMISSION
Date
May 19, 1986
No.
21-06-86
P-1929
SYMPTOM/CONDITION
Vehicle shakes during breakaway in reverse with medium to heavy throttle application (i.e. backing very slowly up a steep grade or backing up a trailer).
DIAGNOSIS
Warm vehicle to normal operating temperature. Locate a relatively steep grade (where it is safe to stop and back up). Try backing the vehicle up very
slowly from a full stop. If a sufficiently steep grade is not available, move the vehicle to an open, flat, paved area where it is safe to stop and back up.
Apply the parking brake about half way. Shift to reverse and slowly open the throttle until the vehicle just begins to move. Vehicle speed should be no
more than a slow walking pace. Extreme care must be taken not to overheat the transmission during this test. Do not open the throttle more than 10
seconds at a time. Allow the transmission to cool by running at a fast idle in neutral for at least three minutes between attempts to produce the shake
condition. If the vehicle shudders during breakaway during either of these tests, do the following repair:
PARTS REQUIRED
1986 Passenger Car Application
Fifth Avenue, Gran Fury, and Diplomat:
Part
Engine
Transmission
Torque Converter
Number
318 (5.2L)
A-999
Low stall/lock up
4431113
1986 Truck, Ramcharger, Ram Van, Wagon:
Part
Engine
Transmission
Torque Converter
Number
225 (3.7L)
A-904
High stall/lock up
4431115
225 (3.7L)
A-904
High stall/non-lock up
4431117
225 (3.7L)
A-727
High stall/lock up
4431125
318 (5.2L)
A-999
Low stall/lock up
4431113
318 (5.2L)
A-999
High stall/lock up
4431119
318 (5.2L)
A-727
Low stall/non-lock up
4431123
360 (5.9L)
A-727
High stall/non-lock up
4431121
360 (5.9L)
A-727
Low stall/non-lock up
4431127
REPAIR PROCEDURE
This repair involves the replacement of the torque converter.
