A/T - 5R55W Soft/Harsh 2nd - 3rd/3rd - 4th Gear Shifts

Article No.
01-11-1

05/28/01

TRANSMISSION - 5R55W - SOFT OR LONG 2-3
UPSHIFTS BETWEEN 16-40 KM/H (10-25 MPH) OR
HARSH 3-4 UPSHIFTS BETWEEN 32-56 KM/H (20-35
MPH) - VEHICLES EQUIPPED WITH 4.0L ENGINE AND
5R55W TRANSMISSION - PRODUCED 11/13/2000
THROUGH 5/21/2001 ONLY

FORD:
2002 EXPLORER

MERCURY:
2002 MOUNTAINEER

ISSUE
Some vehicles equipped with a 4.0L engine and 5R55W automatic transmission built 11/13/2000 through 5/21/2001 may exhibit light throttle soft or long 2-3 upshifts between 16-40 km/h (10-25 mph) or harsh 3-4 upshifts between 32-56 km/h (20-35 mph). This may be caused by the transmission light throttle upshift calibration in the Powertrain Control Module (PCM).

ACTION
Verify the condition. If normal diagnostics cannot pinpoint condition, reprogram the PCM with an updated calibration. Refer to the following Service Procedure for details.

SERVICE PROCEDURE





Verify that at light throttle, the 2-3 shift is delayed, soft or long between 16-40 km/h (10-25 mph) or the 3-4 shift is harsh between 32-56 km/h (20-35 mph). Prior to performing any service procedures, verify tear tag information. Refer to the PCM Calibration Information Chart in this article. If the calibration is not at the latest level, follow the procedures found in the Powertrain Control/Emissions Diagnosis (PC/ED) Service Manual to reprogram the PCM to latest calibration level.

After reprogramming has been completed, the transmission adaptive strategy for pressure control on engagements must be updated.

1. Install diagnostic equipment and monitor the Transmission Fluid Temperature (TFT).

2. Warm the transmission fluid to at least 54°C (130°F) as indicated by the TFT.

3. Perform five (5) engagements from Park to Reverse. Each engagement must be 5 seconds apart.

4. Perform five (5) engagements from Drive to Reverse. Each engagement must be 5 seconds apart.

5. Perform five (5) engagements from Reverse to Drive. Each engagement must be 5 seconds apart.

6. Perform five (5) engagements from Neutral to Drive. Each engagement must be 5 seconds apart.

NOTE
ALL OF THESE ENGAGEMENTS MUST BE PERFORMED IN ORDER FOR THE ENGAGEMENT PRESSURES TO PROPERLY ADAPT WITH THE NEW CALIBRATION.

Verify repair. If the condition is not corrected, continue with normal diagnostics and repair per the Workshop Manual.





Obtain an Authorized Modifications Decal (FPS 8262 - obtainable through DOES II, 25/pkg) and list the date, dealer number, and summary of modifications performed. Select a prominent place adjacent to the Vehicle Emission Control Information Decal suitable for installing the Authorized Modifications Decal. Clean the area, install the decal, and cover it with a clear plastic decal shield.

OTHER APPLICABLE ARTICLES: NONE

WARRANTY STATUS: Eligible Under The Provisions Of Bumper To Bumper Warranty Coverage

OPERATION DESCRIPTION TIME

011101A Reprogram Powertrain 1.0 Hr.
Control Module (Includes
Time To Perform
Transmission Adaptive
Strategy Update)

DEALER CODING
CONDITION
BASIC PART NO. CODE
RECAL 42

OASIS CODES: 501000, 504000