Fulltext TSBs

Technical Service Bulletins

TSB
03-21-12
  • STALL – WHEN REVERSE AND/OR MANUAL LOW ARE SELECTED – (DTC) P1728 – OVERDRIVE CANCEL LAMP ILLUMINATED – 7.3L DIT ENGINE – VEHICLES WITH E40D TRANSMISSION – VEHICLES BUILT PRIOR TO 9/20/95
  • TRANSMISSION – E40D – 7.3L DIT ENGINE – OVERDRIVE CANCEL LAMP ILLUMINATED, (DTC) P1728, AND WHEN REVERSE AND/OR MANUAL LOW ARE SELECTED – VEHICLES BUILT PRIOR TO 9/20/95
Publication Date: October 6, 2003

FORD:
1995-1996 E-350, F SUPER DUTY, F-250, F-350

Article 96-10-14 is being republished and updated as part of a consolidated 7.3L diagnostic aid booklet.

ISSUE:

On vehicles with transmission build dates prior to 9/20/95, the overdrive cancel lamp may be illuminating and Diagnostic Trouble Code (DTC) P1728 present and/or engine stall when reverse and/or manual low is selected may occur on some vehicles. This could be caused by the torque converter hub contacting the cover which may generate metallic and/or friction material particles causing control valves to stick and/or damage the fluid pump. Damage to the fluid pump may cause the converter clutch to engage intermittently.

ACTION:

Replace front pump assembly and/or torque converter if damage or wear is present. Refer to the following Service Procedure for the proper action to use to correct the concern identified.

SERVICE PROCEDURE

OVERDRIVE CANCEL LAMP IS ILLUMINATED AND DTC P1728 IS PRESENT

  1. Verify proper transmission function by performing diagnostic procedures as specified in the appropriate Service Manual, Page 07-01A-43, then Page 07-01A-94 for DTC P1728 and service as required.
  2. If DTC P1728 is still present, examine the front pump assembly for internal damage. Examine gear pockets and stator support for wear. Check for stuck pump valves. Replace pump only if damage or wear is present.
  3. Replace torque converter.
  4. Clean and flush transmission cooler lines and fluid coolers. Transmission may need to be disassembled and cleaned if fluid is contaminated and/or discolored.
  5. Once proper fluid flow volume is verified install the Service In-Line Filter Kit (XC3Z-7B155-AA).

ENGINE STALLS WHEN REVERSE AND/OR MANUAL LOW ARE SELECTED

  1. Perform diagnostics for engine stalls as specified in the appropriate Service Manual, Pages 07-01A-94 and 07-01A-115, and service as required.
  2. If stalling concern is still present, perform the transmission fluid cooler flow test found in the appropriate Service Manual, Section 07-01A, and service as required.
  3. If stalling is still present, examine the pump for internal damage. Examine gear pockets and stator support for wear. Check for stuck pump valves. Replace pump only if damage or wear is present.
  4. Replace torque converter.
  5. Clean and flush transmission cooler lines and fluid coolers. Transmission may need to be disassembled and cleaned if fluid is contaminated and/or discolored.
  6. Once proper fluid flow volume is verified install the Service In-Line Filter Kit (XC3Z-7B155-AA).

OVERDRIVE CANCEL LAMP IS ILLUMINATED, DTC P1728 IS PRESENT, AND THE ENGINE STALLS WHEN REVERSE AND/OR MANUAL LOW IS SELECTED

  1. Examine the pump for internal damage. Examine gear pockets and stator support for wear. Check for stuck pump valves. Replace pump only if damage or wear is present.
  2. Replace torque converter.
  3. Clean and flush transmission cooler lines and fluid coolers. Transmission may need to be disassembled and cleaned if fluid is contaminated and/or discolored.
  4. Once proper fluid flow volume is verified install the Service In-Line Filter Kit (XC3Z-7B155-AA).

PART NUMBERPART NAME
XC3Z-7B155-AAIn-Line Filter Kit
F81Z-7A103-BAFront Pump Assembly
XL3Z-7902-DARMTorque Converter Assembly

OTHER APPLICABLE ARTICLES:

00-23-10

SUPERSEDES:

96-10-14

WARRANTY STATUS:

Information Only


NOTE: The information in Technical Service Bulletins is intended for use by trained, professional technicians with the knowledge, tools, and equipment to do the job properly and safely. It informs these technicians of conditions that may occur on some vehicles, or provides information that could assist in proper vehicle service. The procedures should not be performed by “do-it-yourselfers”. Do not assume that a condition described affects your car or truck. Contact a Ford, Lincoln, or Mercury dealership to determine whether the Bulletin applies to your vehicle.

Copyright © 2003 Ford Motor Company