|
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 |
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 21°C (70°F) 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
- Using New Generation Star (NGS) Tester or Scan Tool, perform all self tests and record DTCs.
- Monitor rpm, and gear command Parameter Identification Displays (PIDs) with the NGS Tester during the 2-3 shift.
- 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.
- 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 NUMBER | PART NAME |
|---|---|
F7AZ-7H292-AB
Ford F7AZ-7H292-AB - PISTON
Last update on 2026-06-10 / Affiliate links / Images from Amazon Product Advertising API | Accumulator Piston |
- Prevents overheating, reducing elevated operating temperatures up to 40 degrees Farenheit - Optimizes total transmission performance
- Eliminates transmission fluid foaming and oxidation and reduces wear throughout the transmission
- Eliminates clutch chatter and torque converter shudder; Softens and modifies harsh shifts making them quicker in duration
- Extends fluid life / Raises the thermal and oxidative stability of the fluid
- Only protectant that increases the fluid’s ability to transfer heat / Protects new seals and permanently restores older seals to a like-new condition, without adverse side effects
Last update on 2026-06-09 / Affiliate links / Images from Amazon Product Advertising API
- Helps fluid systems work smoother and last longer.
- Safe in most types of automatic transmission fluid, hydraulics, or power steering fluid systems. Safe for conventional and synthetic fluids.
- Dissolves and liquefies harmful gum and varnish buildup in fluid
- Cleans and lubricates valve bodies, shift actuators and solenoids. Helps to control moisture in fluid.
- Will not swell seals or harm gaskets, O-rings, or clutch material
Last update on 2026-06-09 / Affiliate links / Images from Amazon Product Advertising API
- Rebuilds And Restores Metal Parts And Protects Them From Future Wear.
- Anti Friction Modifier. Eliminates Surfaces Defects & Protects From Extreme Heat
- Stops Transmission Shudder, Reduces Noise & Vibration. Ultimate Stop Slipping Additive
- Increases Performance Reliability And Prolongs Service Life Of Control Gears
- Universal for Automatic, CVT, Tiptronic, Manumatic, Semi-Automatic Transmission
Last update on 2026-06-10 / Affiliate links / Images from Amazon Product Advertising API
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