A/T - Vibration/Shudder On Light Acceleration
Article No.95-23-4
11/20/95
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 ECONOLINE, F-150
This TSB article is being republished in its entirety to clarify Issue, Action, Service Procedure, and Operation.
ISSUE:
Torque converter clutch shudder or vibration may occur under light to moderate acceleration above 56 km/h (35 mph) while in 3rd or 4th gear or during 3-4 or 4-3 shifts. This condition may be noticeable on higher mileage vehicles (24,000 km/15,000 mi or more) when the torque converter clutch engages or disengages during light to moderate acceleration.
ACTION:
Perform normal diagnostics (i.e., linkage adjustment fluid level and condition, On-Board diagnostic check). If self test codes are present, service as required. If no DTCs are present, perform the following Service Procedure.
SERVICE PROCEDURE
1. Drain all transmission fluid. Refer to the appropriate Service Manual, Section 07-01 for details. If fluid is burnt or heavily contaminated, repair as required.
2. Remove transmission and replace the torque converter assembly with the correct torque converter. Refer to Figure 1.
3. Remove the transmission pan and clean transmission pan and pan magnet.
4. Inspect transmission pan gasket and filter. Reuse both pan gasket and filter if not damaged.
5. Reinstall filter, pan magnet, and transmission pan with original gasket.
6. Completely clean and flush transmission cooler and cooler lines.
7. Reinstall the transmission assembly.
8. Refill transmission with Mercon(R) Automatic Transmission Fluid (XT-2-QDX). Use only quart containers of Mercon(R) when refilling to ensure proper fluid quality is being used.
PART NUMBER PART NAME
XT-2-QDX Mercon(R) Automatic Transmission Fluid
F5AZ-7902-ARM Torque Converter
F5ZZ-7902-ARM Torque Converter
F4LY-7902-ARM Torque Converter
F4SZ-7902-BRM Torque Converter
Please use the following repair description for each model described in the OPERATION/DESCRIPTION/TIME section of this TSB article:
Perform electronic transmission diagnostics, replace torque converter, drain and fill transmission (including inspection of filter - replace if necessary), flush cooler and lines. Road test vehicle after repairs are complete.
OTHER APPLICABLE ARTICLES: NONE
SUPERSEDES: 94-14-8
WARRANTY STATUS: Eligible Under The Provisions Of Bumper To Bumper Warranty Coverage
OPERATION DESCRIPTION TIME
952304A 1994-95 Econoline 4.6 Hrs.
952304B 1994-95 F-Series 4X2 4.4 Hrs.
952304C 1994-95 F-Series 4X4 6.0 Hrs.
952304D 1994-95 Mustang 3.8L 5.1 Hrs.
952304E 1994-95 Mustang 5.0L 5.3 Hrs.
952304F 1994-95 5.4 Hrs.
Thunderbird/Cougar 4.6L
952304G 1994-95 5.3 Hrs.
Thunderbird/Cougar 3.8L
952304H 1993-95 Mark VIII 5.4 Hrs.
952304I 1992-95 Crown 4.9 Hrs.
Victoria/Grand
Marquis/Town Car
DEALER CODING
CONDITION
BASIC PART NO. CODE
7902 67
OASIS CODES: 501000, 502000, 504000, 510000, 597997, 703000, 703200, 703400