Mountaineer AWD V8-4.6L SOHC VIN W (2002)
PROM - Programmable Read Only Memory: Customer Interest
A/T - 5R55W 4th - 5th Upshift/Downshift Shudder
Article No.
03-14-7
07/21/03
TRANSMISSION - 5R55W - SHUDDER DURING 5-4
AND 4-5 SHIFT - VEHICLES BUILT 11/13/00
THROUGH 2/14/02 EQUIPPED WITH 4.6L ENGINE
FORD:
2002 EXPLORER
MERCURY:
2002 MOUNTAINEER
ISSUE
Some vehicles equipped with a 4.6L engine and 5R55W automatic transmission with the vehicle build date between 11/13/00 and 2/14/02, may exhibit a
shudder during 4/5 upshift and/or 5/4 downshift.
ACTION
Follow normal diagnostic procedures and verify the condition. If the condition is valid, reprogram the Powertrain Control Module (PCM) to the latest
calibration level. If the condition is not corrected after reprogramming, continue with normal diagnostics to pinpoint the cause. Refer to the following
Service Procedure for details.
SERVICE PROCEDURE
If the vehicle is built between 11/13/00 and 2/14/02 and has the conditions listed and does not have the latest PCM calibration, (see chart) reprogram the
PCM. Prior to performing any service procedures, verify tear tag information. Vehicle built after 2/14/02 are not affected by this TSB.
1.
Follow the procedures found in the Powertrain Control/Emissions Diagnosis (PC/ED) Service Manual and reprogram the PCM to latest calibration
level.
2.
After reprogramming has been completed, the transmission adaptive strategy for pressure control on engagements must be updated.
3.
Install diagnostic equipment and monitor the Transmission Fluid Temperature (TFT).
