Mountaineer AWD V6-4.0L VIN E (2002)
PROM - Programmable Read Only Memory: Customer Interest
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.
