Fulltext TSBs

Technical Service Bulletins

TSB
99-18-5
  • TRANSMISSION CONTROL INDICATOR LAMP (TCIL) – TCIL ILLUMINATED WITH DIAGNOSTIC TROUBLE CODE (DTC) P0782 STORED IN MEMORY – VEHICLES BUILT BETWEEN 3/15/1997 AND 12/31/1998 AND WITH 4R70W TRANSMISSION
  • TRANSMISSION – 4R70W – DELAYED OR NO 2-3 UPSHIFT – VEHICLES BUILT BETWEEN 3/15/1997 AND 12/31/1998
Publication Date: AUGUST 20, 1999

FORD:
1997-1999 CROWN VICTORIA, MUSTANG, ECONOLINE, EXPEDITION, EXPLORER, F-150, F-250 LD
LINCOLN:
1997-1998 MARK VIII
1997-1999 TOWN CAR
MERCURY:
1997-1999 GRAND MARQUIS, MOUNTAINEER

This TSB article is being republished in its entirety to revise the Service Procedure.

ISSUE:

A perceived 2-3 delayed upshift, primarily when the transmission is cold, may be evident on some vehicles. The Powertrain Control Module (PCM) strategy is designed to delay shifts in some vehicles when Transmission Fluid Temperature (TFT) is below approximately 21C (70F) for faster heater warmup. The 2-3 shift may be delayed approximately 14-24 km/h (9-15 mph) when compared to the shift speed charts listed in the appropriate Service or Workshop Manual. A leaking 2-3 accumulator may cause Diagnostic Trouble Code (DTC) P0782.

ACTION:

Verify if delayed upshift is normal cold shift scheduling or a possible leak past the large diameter 2-3 accumulator seal. Refer to the following Service Procedure for details.

SERVICE PROCEDURE

  1. Using New Generation Star (NGS) Tester, perform all self tests and record DTCs.
  2. Monitor rpm, and gear command Parameter Identification Displays (PIDs) with the NGS Tester during the 2-3 shift.
  3. If engine rpm decreases within 1-2 seconds after the gear command has changed on the NGS Tester, then vehicle has upshifted properly and no repair is necessary. If engine rpm does not drop within 1-2 seconds, continue to Step 4.
  4. If engine rpm does not drop when the PCM commands third gear, then replace the 2-3 accumulator piston using the revised Accumulator Piston (F7AZ-7H292-AB). Refer to the appropriate Service or Workshop Manual for replacement procedure.

PART NUMBERPART NAME
F7AZ-7H292-ABAccumulator Piston

OTHER APPLICABLE ARTICLES:

NONE

SUPERSEDES:

99-1-3

WARRANTY STATUS:

Eligible Under The Provisions Of Bumper To Bumper Warranty Coverage

OPERATIONDESCRIPTIONTIME
991805AReplace Accumulator Piston Per Service Procedure (Includes Diagnosis)1.8 Hrs.
991805BDiagnosis Only (Do Not Use With Operation A)0.8 Hr.

DEALER CODING

BASIC PART NO.CONDITION CODE
7H29242

OASIS CODES:

501000, 504000


Copyright 1999 Ford Motor Company